4617 lines
167 KiB
C
4617 lines
167 KiB
C
/*
|
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* Copyright 2014 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
|
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* the following conditions:
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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||
*/
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/* based on pieces from si_pipe.c and radeon_llvm_emit.c */
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#include "ac_llvm_build.h"
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#include "ac_nir.h"
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#include "ac_llvm_util.h"
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#include "ac_shader_util.h"
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#include "c11/threads.h"
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#include "shader_enums.h"
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#include "sid.h"
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#include "util/bitscan.h"
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#include "util/macros.h"
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#include "util/u_atomic.h"
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#include "util/u_math.h"
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#include <llvm-c/Core.h>
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#include <llvm/Config/llvm-config.h>
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#include <assert.h>
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#include <stdio.h>
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#define AC_LLVM_INITIAL_CF_DEPTH 4
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/* Data for if/else/endif and bgnloop/endloop control flow structures.
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*/
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struct ac_llvm_flow {
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/* Loop exit or next part of if/else/endif. */
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LLVMBasicBlockRef next_block;
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LLVMBasicBlockRef loop_entry_block;
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||
};
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||
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/* Initialize module-independent parts of the context.
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*
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* The caller is responsible for initializing ctx::module and ctx::builder.
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*/
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void ac_llvm_context_init(struct ac_llvm_context *ctx, struct ac_llvm_compiler *compiler,
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enum amd_gfx_level gfx_level, enum radeon_family family,
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bool has_3d_cube_border_color_mipmap,
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enum ac_float_mode float_mode, unsigned wave_size,
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unsigned ballot_mask_bits)
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{
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ctx->context = LLVMContextCreate();
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#if LLVM_VERSION_MAJOR >= 15
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LLVMContextSetOpaquePointers(ctx->context, false);
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#endif
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ctx->gfx_level = gfx_level;
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ctx->family = family;
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ctx->has_3d_cube_border_color_mipmap = has_3d_cube_border_color_mipmap;
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ctx->wave_size = wave_size;
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ctx->ballot_mask_bits = ballot_mask_bits;
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ctx->float_mode = float_mode;
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ctx->module = ac_create_module(compiler->tm, ctx->context);
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ctx->builder = ac_create_builder(ctx->context, float_mode);
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ctx->voidt = LLVMVoidTypeInContext(ctx->context);
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ctx->i1 = LLVMInt1TypeInContext(ctx->context);
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ctx->i8 = LLVMInt8TypeInContext(ctx->context);
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ctx->i16 = LLVMIntTypeInContext(ctx->context, 16);
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ctx->i32 = LLVMIntTypeInContext(ctx->context, 32);
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ctx->i64 = LLVMIntTypeInContext(ctx->context, 64);
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ctx->i128 = LLVMIntTypeInContext(ctx->context, 128);
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ctx->intptr = ctx->i32;
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ctx->f16 = LLVMHalfTypeInContext(ctx->context);
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ctx->f32 = LLVMFloatTypeInContext(ctx->context);
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ctx->f64 = LLVMDoubleTypeInContext(ctx->context);
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ctx->v2i16 = LLVMVectorType(ctx->i16, 2);
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ctx->v4i16 = LLVMVectorType(ctx->i16, 4);
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ctx->v2f16 = LLVMVectorType(ctx->f16, 2);
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ctx->v4f16 = LLVMVectorType(ctx->f16, 4);
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ctx->v2i32 = LLVMVectorType(ctx->i32, 2);
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||
ctx->v3i32 = LLVMVectorType(ctx->i32, 3);
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ctx->v4i32 = LLVMVectorType(ctx->i32, 4);
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ctx->v2f32 = LLVMVectorType(ctx->f32, 2);
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ctx->v3f32 = LLVMVectorType(ctx->f32, 3);
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ctx->v4f32 = LLVMVectorType(ctx->f32, 4);
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ctx->v8i32 = LLVMVectorType(ctx->i32, 8);
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||
ctx->iN_wavemask = LLVMIntTypeInContext(ctx->context, ctx->wave_size);
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||
ctx->iN_ballotmask = LLVMIntTypeInContext(ctx->context, ballot_mask_bits);
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||
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ctx->i8_0 = LLVMConstInt(ctx->i8, 0, false);
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ctx->i8_1 = LLVMConstInt(ctx->i8, 1, false);
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ctx->i16_0 = LLVMConstInt(ctx->i16, 0, false);
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ctx->i16_1 = LLVMConstInt(ctx->i16, 1, false);
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||
ctx->i32_0 = LLVMConstInt(ctx->i32, 0, false);
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ctx->i32_1 = LLVMConstInt(ctx->i32, 1, false);
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||
ctx->i64_0 = LLVMConstInt(ctx->i64, 0, false);
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ctx->i64_1 = LLVMConstInt(ctx->i64, 1, false);
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ctx->i128_0 = LLVMConstInt(ctx->i128, 0, false);
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ctx->i128_1 = LLVMConstInt(ctx->i128, 1, false);
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ctx->f16_0 = LLVMConstReal(ctx->f16, 0.0);
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ctx->f16_1 = LLVMConstReal(ctx->f16, 1.0);
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||
ctx->f32_0 = LLVMConstReal(ctx->f32, 0.0);
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ctx->f32_1 = LLVMConstReal(ctx->f32, 1.0);
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||
ctx->f64_0 = LLVMConstReal(ctx->f64, 0.0);
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ctx->f64_1 = LLVMConstReal(ctx->f64, 1.0);
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||
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||
ctx->i1false = LLVMConstInt(ctx->i1, 0, false);
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||
ctx->i1true = LLVMConstInt(ctx->i1, 1, false);
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||
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ctx->range_md_kind = LLVMGetMDKindIDInContext(ctx->context, "range", 5);
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ctx->invariant_load_md_kind = LLVMGetMDKindIDInContext(ctx->context, "invariant.load", 14);
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ctx->uniform_md_kind = LLVMGetMDKindIDInContext(ctx->context, "amdgpu.uniform", 14);
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ctx->empty_md = LLVMMDNodeInContext(ctx->context, NULL, 0);
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ctx->flow = calloc(1, sizeof(*ctx->flow));
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||
}
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void ac_llvm_context_dispose(struct ac_llvm_context *ctx)
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{
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free(ctx->flow->stack);
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free(ctx->flow);
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ctx->flow = NULL;
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||
}
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int ac_get_llvm_num_components(LLVMValueRef value)
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{
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LLVMTypeRef type = LLVMTypeOf(value);
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unsigned num_components =
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LLVMGetTypeKind(type) == LLVMVectorTypeKind ? LLVMGetVectorSize(type) : 1;
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return num_components;
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||
}
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LLVMValueRef ac_llvm_extract_elem(struct ac_llvm_context *ac, LLVMValueRef value, int index)
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||
{
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if (LLVMGetTypeKind(LLVMTypeOf(value)) != LLVMVectorTypeKind) {
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assert(index == 0);
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||
return value;
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||
}
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||
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return LLVMBuildExtractElement(ac->builder, value, LLVMConstInt(ac->i32, index, false), "");
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||
}
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||
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int ac_get_elem_bits(struct ac_llvm_context *ctx, LLVMTypeRef type)
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{
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if (LLVMGetTypeKind(type) == LLVMVectorTypeKind)
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type = LLVMGetElementType(type);
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||
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||
if (LLVMGetTypeKind(type) == LLVMIntegerTypeKind)
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||
return LLVMGetIntTypeWidth(type);
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if (LLVMGetTypeKind(type) == LLVMPointerTypeKind) {
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||
if (LLVMGetPointerAddressSpace(type) == AC_ADDR_SPACE_LDS)
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return 32;
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||
}
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if (type == ctx->f16)
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return 16;
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if (type == ctx->f32)
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return 32;
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if (type == ctx->f64)
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return 64;
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||
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unreachable("Unhandled type kind in get_elem_bits");
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||
}
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||
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unsigned ac_get_type_size(LLVMTypeRef type)
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||
{
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LLVMTypeKind kind = LLVMGetTypeKind(type);
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||
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||
switch (kind) {
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||
case LLVMIntegerTypeKind:
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||
return LLVMGetIntTypeWidth(type) / 8;
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||
case LLVMHalfTypeKind:
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||
return 2;
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||
case LLVMFloatTypeKind:
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return 4;
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||
case LLVMDoubleTypeKind:
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return 8;
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case LLVMPointerTypeKind:
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if (LLVMGetPointerAddressSpace(type) == AC_ADDR_SPACE_CONST_32BIT)
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return 4;
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return 8;
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case LLVMVectorTypeKind:
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return LLVMGetVectorSize(type) * ac_get_type_size(LLVMGetElementType(type));
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case LLVMArrayTypeKind:
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return LLVMGetArrayLength(type) * ac_get_type_size(LLVMGetElementType(type));
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default:
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assert(0);
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return 0;
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}
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}
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static LLVMTypeRef to_integer_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t)
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{
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if (t == ctx->i1)
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return ctx->i1;
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else if (t == ctx->i8)
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return ctx->i8;
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else if (t == ctx->f16 || t == ctx->i16)
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return ctx->i16;
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else if (t == ctx->f32 || t == ctx->i32)
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return ctx->i32;
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else if (t == ctx->f64 || t == ctx->i64)
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return ctx->i64;
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else
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unreachable("Unhandled integer size");
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}
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LLVMTypeRef ac_to_integer_type(struct ac_llvm_context *ctx, LLVMTypeRef t)
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{
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if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) {
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LLVMTypeRef elem_type = LLVMGetElementType(t);
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return LLVMVectorType(to_integer_type_scalar(ctx, elem_type), LLVMGetVectorSize(t));
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}
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if (LLVMGetTypeKind(t) == LLVMPointerTypeKind) {
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switch (LLVMGetPointerAddressSpace(t)) {
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case AC_ADDR_SPACE_GLOBAL:
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return ctx->i64;
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case AC_ADDR_SPACE_CONST_32BIT:
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case AC_ADDR_SPACE_LDS:
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return ctx->i32;
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default:
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unreachable("unhandled address space");
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}
|
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}
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return to_integer_type_scalar(ctx, t);
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}
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LLVMValueRef ac_to_integer(struct ac_llvm_context *ctx, LLVMValueRef v)
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{
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LLVMTypeRef type = LLVMTypeOf(v);
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if (LLVMGetTypeKind(type) == LLVMPointerTypeKind) {
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return LLVMBuildPtrToInt(ctx->builder, v, ac_to_integer_type(ctx, type), "");
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}
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return LLVMBuildBitCast(ctx->builder, v, ac_to_integer_type(ctx, type), "");
|
||
}
|
||
|
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LLVMValueRef ac_to_integer_or_pointer(struct ac_llvm_context *ctx, LLVMValueRef v)
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{
|
||
LLVMTypeRef type = LLVMTypeOf(v);
|
||
if (LLVMGetTypeKind(type) == LLVMPointerTypeKind)
|
||
return v;
|
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return ac_to_integer(ctx, v);
|
||
}
|
||
|
||
static LLVMTypeRef to_float_type_scalar(struct ac_llvm_context *ctx, LLVMTypeRef t)
|
||
{
|
||
if (t == ctx->i8)
|
||
return ctx->i8;
|
||
else if (t == ctx->i16 || t == ctx->f16)
|
||
return ctx->f16;
|
||
else if (t == ctx->i32 || t == ctx->f32)
|
||
return ctx->f32;
|
||
else if (t == ctx->i64 || t == ctx->f64)
|
||
return ctx->f64;
|
||
else
|
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unreachable("Unhandled float size");
|
||
}
|
||
|
||
LLVMTypeRef ac_to_float_type(struct ac_llvm_context *ctx, LLVMTypeRef t)
|
||
{
|
||
if (LLVMGetTypeKind(t) == LLVMVectorTypeKind) {
|
||
LLVMTypeRef elem_type = LLVMGetElementType(t);
|
||
return LLVMVectorType(to_float_type_scalar(ctx, elem_type), LLVMGetVectorSize(t));
|
||
}
|
||
return to_float_type_scalar(ctx, t);
|
||
}
|
||
|
||
LLVMValueRef ac_to_float(struct ac_llvm_context *ctx, LLVMValueRef v)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(v);
|
||
return LLVMBuildBitCast(ctx->builder, v, ac_to_float_type(ctx, type), "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_intrinsic(struct ac_llvm_context *ctx, const char *name,
|
||
LLVMTypeRef return_type, LLVMValueRef *params, unsigned param_count,
|
||
unsigned attrib_mask)
|
||
{
|
||
LLVMValueRef call;
|
||
bool set_callsite_attrs = !(attrib_mask & AC_FUNC_ATTR_LEGACY);
|
||
|
||
LLVMTypeRef param_types[32];
|
||
assert(param_count <= 32);
|
||
for (unsigned i = 0; i < param_count; ++i) {
|
||
assert(params[i]);
|
||
param_types[i] = LLVMTypeOf(params[i]);
|
||
}
|
||
|
||
LLVMTypeRef function_type = LLVMFunctionType(return_type, param_types, param_count, 0);
|
||
LLVMValueRef function = LLVMGetNamedFunction(ctx->module, name);
|
||
|
||
if (!function) {
|
||
function = LLVMAddFunction(ctx->module, name, function_type);
|
||
|
||
LLVMSetFunctionCallConv(function, LLVMCCallConv);
|
||
LLVMSetLinkage(function, LLVMExternalLinkage);
|
||
|
||
if (!set_callsite_attrs)
|
||
ac_add_func_attributes(ctx->context, function, attrib_mask);
|
||
}
|
||
|
||
call = LLVMBuildCall2(ctx->builder, function_type, function, params, param_count, "");
|
||
if (set_callsite_attrs)
|
||
ac_add_func_attributes(ctx->context, call, attrib_mask);
|
||
return call;
|
||
}
|
||
|
||
/**
|
||
* Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with
|
||
* intrinsic names).
|
||
*/
|
||
void ac_build_type_name_for_intr(LLVMTypeRef type, char *buf, unsigned bufsize)
|
||
{
|
||
LLVMTypeRef elem_type = type;
|
||
|
||
if (LLVMGetTypeKind(type) == LLVMStructTypeKind) {
|
||
unsigned count = LLVMCountStructElementTypes(type);
|
||
int ret = snprintf(buf, bufsize, "sl_");
|
||
buf += ret;
|
||
bufsize -= ret;
|
||
|
||
LLVMTypeRef *elems = alloca(count * sizeof(LLVMTypeRef));
|
||
LLVMGetStructElementTypes(type, elems);
|
||
|
||
for (unsigned i = 0; i < count; i++) {
|
||
ac_build_type_name_for_intr(elems[i], buf, bufsize);
|
||
ret = strlen(buf);
|
||
buf += ret;
|
||
bufsize -= ret;
|
||
}
|
||
|
||
snprintf(buf, bufsize, "s");
|
||
return;
|
||
}
|
||
|
||
assert(bufsize >= 8);
|
||
if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) {
|
||
int ret = snprintf(buf, bufsize, "v%u", LLVMGetVectorSize(type));
|
||
if (ret < 0) {
|
||
char *type_name = LLVMPrintTypeToString(type);
|
||
fprintf(stderr, "Error building type name for: %s\n", type_name);
|
||
LLVMDisposeMessage(type_name);
|
||
return;
|
||
}
|
||
elem_type = LLVMGetElementType(type);
|
||
buf += ret;
|
||
bufsize -= ret;
|
||
}
|
||
switch (LLVMGetTypeKind(elem_type)) {
|
||
default:
|
||
break;
|
||
case LLVMIntegerTypeKind:
|
||
snprintf(buf, bufsize, "i%d", LLVMGetIntTypeWidth(elem_type));
|
||
break;
|
||
case LLVMHalfTypeKind:
|
||
snprintf(buf, bufsize, "f16");
|
||
break;
|
||
case LLVMFloatTypeKind:
|
||
snprintf(buf, bufsize, "f32");
|
||
break;
|
||
case LLVMDoubleTypeKind:
|
||
snprintf(buf, bufsize, "f64");
|
||
break;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Helper function that builds an LLVM IR PHI node and immediately adds
|
||
* incoming edges.
|
||
*/
|
||
LLVMValueRef ac_build_phi(struct ac_llvm_context *ctx, LLVMTypeRef type, unsigned count_incoming,
|
||
LLVMValueRef *values, LLVMBasicBlockRef *blocks)
|
||
{
|
||
LLVMValueRef phi = LLVMBuildPhi(ctx->builder, type, "");
|
||
LLVMAddIncoming(phi, values, blocks, count_incoming);
|
||
return phi;
|
||
}
|
||
|
||
void ac_build_s_barrier(struct ac_llvm_context *ctx, gl_shader_stage stage)
|
||
{
|
||
/* GFX6 only: s_barrier isn’t needed in TCS because an entire patch always fits into
|
||
* a single wave due to a bug workaround disallowing multi-wave HS workgroups.
|
||
*/
|
||
if (ctx->gfx_level == GFX6 && stage == MESA_SHADER_TESS_CTRL)
|
||
return;
|
||
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.s.barrier", ctx->voidt, NULL, 0, AC_FUNC_ATTR_CONVERGENT);
|
||
}
|
||
|
||
/* Prevent optimizations (at least of memory accesses) across the current
|
||
* point in the program by emitting empty inline assembly that is marked as
|
||
* having side effects.
|
||
*
|
||
* Optionally, a value can be passed through the inline assembly to prevent
|
||
* LLVM from hoisting calls to ReadNone functions.
|
||
*/
|
||
void ac_build_optimization_barrier(struct ac_llvm_context *ctx, LLVMValueRef *pgpr, bool sgpr)
|
||
{
|
||
static int counter = 0;
|
||
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
char code[16];
|
||
const char *constraint = sgpr ? "=s,0" : "=v,0";
|
||
|
||
snprintf(code, sizeof(code), "; %d", (int)p_atomic_inc_return(&counter));
|
||
|
||
if (!pgpr) {
|
||
LLVMTypeRef ftype = LLVMFunctionType(ctx->voidt, NULL, 0, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "", true, false);
|
||
LLVMBuildCall2(builder, ftype, inlineasm, NULL, 0, "");
|
||
} else if (LLVMTypeOf(*pgpr) == ctx->i32) {
|
||
/* Simple version for i32 that allows the caller to set LLVM metadata on the call
|
||
* instruction. */
|
||
LLVMTypeRef ftype = LLVMFunctionType(ctx->i32, &ctx->i32, 1, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, constraint, true, false);
|
||
|
||
*pgpr = LLVMBuildCall2(builder, ftype, inlineasm, pgpr, 1, "");
|
||
} else if (LLVMTypeOf(*pgpr) == ctx->i16) {
|
||
/* Simple version for i16 that allows the caller to set LLVM metadata on the call
|
||
* instruction. */
|
||
LLVMTypeRef ftype = LLVMFunctionType(ctx->i16, &ctx->i16, 1, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, constraint, true, false);
|
||
|
||
*pgpr = LLVMBuildCall2(builder, ftype, inlineasm, pgpr, 1, "");
|
||
} else if (LLVMGetTypeKind(LLVMTypeOf(*pgpr)) == LLVMPointerTypeKind) {
|
||
LLVMTypeRef type = LLVMTypeOf(*pgpr);
|
||
LLVMTypeRef ftype = LLVMFunctionType(type, &type, 1, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, constraint, true, false);
|
||
|
||
*pgpr = LLVMBuildCall2(builder, ftype, inlineasm, pgpr, 1, "");
|
||
} else {
|
||
LLVMTypeRef ftype = LLVMFunctionType(ctx->i32, &ctx->i32, 1, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, constraint, true, false);
|
||
LLVMTypeRef type = LLVMTypeOf(*pgpr);
|
||
unsigned bitsize = ac_get_elem_bits(ctx, type);
|
||
LLVMValueRef vgpr = *pgpr;
|
||
LLVMTypeRef vgpr_type;
|
||
unsigned vgpr_size;
|
||
LLVMValueRef vgpr0;
|
||
|
||
if (bitsize < 32)
|
||
vgpr = LLVMBuildZExt(ctx->builder, vgpr, ctx->i32, "");
|
||
|
||
vgpr_type = LLVMTypeOf(vgpr);
|
||
vgpr_size = ac_get_type_size(vgpr_type);
|
||
|
||
assert(vgpr_size % 4 == 0);
|
||
|
||
vgpr = LLVMBuildBitCast(builder, vgpr, LLVMVectorType(ctx->i32, vgpr_size / 4), "");
|
||
vgpr0 = LLVMBuildExtractElement(builder, vgpr, ctx->i32_0, "");
|
||
vgpr0 = LLVMBuildCall2(builder, ftype, inlineasm, &vgpr0, 1, "");
|
||
vgpr = LLVMBuildInsertElement(builder, vgpr, vgpr0, ctx->i32_0, "");
|
||
vgpr = LLVMBuildBitCast(builder, vgpr, vgpr_type, "");
|
||
|
||
if (bitsize < 32)
|
||
vgpr = LLVMBuildTrunc(builder, vgpr, type, "");
|
||
|
||
*pgpr = vgpr;
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_shader_clock(struct ac_llvm_context *ctx, nir_scope scope)
|
||
{
|
||
const char *subgroup = "llvm.readcyclecounter";
|
||
const char *name = scope == NIR_SCOPE_DEVICE ? "llvm.amdgcn.s.memrealtime" : subgroup;
|
||
|
||
LLVMValueRef tmp = ac_build_intrinsic(ctx, name, ctx->i64, NULL, 0, 0);
|
||
return LLVMBuildBitCast(ctx->builder, tmp, ctx->v2i32, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_ballot(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
const char *name;
|
||
|
||
if (LLVMTypeOf(value) == ctx->i1)
|
||
value = LLVMBuildZExt(ctx->builder, value, ctx->i32, "");
|
||
|
||
if (ctx->wave_size == 64)
|
||
name = "llvm.amdgcn.icmp.i64.i32";
|
||
else
|
||
name = "llvm.amdgcn.icmp.i32.i32";
|
||
|
||
LLVMValueRef args[3] = {value, ctx->i32_0, LLVMConstInt(ctx->i32, LLVMIntNE, 0)};
|
||
|
||
/* We currently have no other way to prevent LLVM from lifting the icmp
|
||
* calls to a dominating basic block.
|
||
*/
|
||
ac_build_optimization_barrier(ctx, &args[0], false);
|
||
|
||
args[0] = ac_to_integer(ctx, args[0]);
|
||
|
||
return ac_build_intrinsic(
|
||
ctx, name, ctx->iN_wavemask, args, 3,
|
||
AC_FUNC_ATTR_NOUNWIND | AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
}
|
||
|
||
LLVMValueRef ac_get_i1_sgpr_mask(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
const char *name;
|
||
|
||
if (ctx->wave_size == 64)
|
||
name = "llvm.amdgcn.icmp.i64.i1";
|
||
else
|
||
name = "llvm.amdgcn.icmp.i32.i1";
|
||
|
||
LLVMValueRef args[3] = {
|
||
value,
|
||
ctx->i1false,
|
||
LLVMConstInt(ctx->i32, LLVMIntNE, 0),
|
||
};
|
||
|
||
return ac_build_intrinsic(
|
||
ctx, name, ctx->iN_wavemask, args, 3,
|
||
AC_FUNC_ATTR_NOUNWIND | AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
}
|
||
|
||
LLVMValueRef ac_build_vote_all(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1);
|
||
LLVMValueRef vote_set = ac_build_ballot(ctx, value);
|
||
return LLVMBuildICmp(ctx->builder, LLVMIntEQ, vote_set, active_set, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_vote_any(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
LLVMValueRef vote_set = ac_build_ballot(ctx, value);
|
||
return LLVMBuildICmp(ctx->builder, LLVMIntNE, vote_set, LLVMConstInt(ctx->iN_wavemask, 0, 0),
|
||
"");
|
||
}
|
||
|
||
LLVMValueRef ac_build_vote_eq(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
LLVMValueRef active_set = ac_build_ballot(ctx, ctx->i32_1);
|
||
LLVMValueRef vote_set = ac_build_ballot(ctx, value);
|
||
|
||
LLVMValueRef all = LLVMBuildICmp(ctx->builder, LLVMIntEQ, vote_set, active_set, "");
|
||
LLVMValueRef none =
|
||
LLVMBuildICmp(ctx->builder, LLVMIntEQ, vote_set, LLVMConstInt(ctx->iN_wavemask, 0, 0), "");
|
||
return LLVMBuildOr(ctx->builder, all, none, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_varying_gather_values(struct ac_llvm_context *ctx, LLVMValueRef *values,
|
||
unsigned value_count, unsigned component)
|
||
{
|
||
LLVMValueRef vec = NULL;
|
||
|
||
if (value_count == 1) {
|
||
return values[component];
|
||
} else if (!value_count)
|
||
unreachable("value_count is 0");
|
||
|
||
for (unsigned i = component; i < value_count + component; i++) {
|
||
LLVMValueRef value = values[i];
|
||
|
||
if (i == component)
|
||
vec = LLVMGetUndef(LLVMVectorType(LLVMTypeOf(value), value_count));
|
||
LLVMValueRef index = LLVMConstInt(ctx->i32, i - component, false);
|
||
vec = LLVMBuildInsertElement(ctx->builder, vec, value, index, "");
|
||
}
|
||
return vec;
|
||
}
|
||
|
||
LLVMValueRef ac_build_gather_values_extended(struct ac_llvm_context *ctx, LLVMValueRef *values,
|
||
unsigned value_count, unsigned value_stride,
|
||
bool always_vector)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef vec = NULL;
|
||
unsigned i;
|
||
|
||
if (value_count == 1 && !always_vector) {
|
||
return values[0];
|
||
} else if (!value_count)
|
||
unreachable("value_count is 0");
|
||
|
||
for (i = 0; i < value_count; i++) {
|
||
LLVMValueRef value = values[i * value_stride];
|
||
|
||
if (!i)
|
||
vec = LLVMGetUndef(LLVMVectorType(LLVMTypeOf(value), value_count));
|
||
LLVMValueRef index = LLVMConstInt(ctx->i32, i, false);
|
||
vec = LLVMBuildInsertElement(builder, vec, value, index, "");
|
||
}
|
||
return vec;
|
||
}
|
||
|
||
LLVMValueRef ac_build_gather_values(struct ac_llvm_context *ctx, LLVMValueRef *values,
|
||
unsigned value_count)
|
||
{
|
||
return ac_build_gather_values_extended(ctx, values, value_count, 1, false);
|
||
}
|
||
|
||
LLVMValueRef ac_build_concat(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
unsigned a_size = ac_get_llvm_num_components(a);
|
||
unsigned b_size = ac_get_llvm_num_components(b);
|
||
|
||
LLVMValueRef *elems = alloca((a_size + b_size) * sizeof(LLVMValueRef));
|
||
for (unsigned i = 0; i < a_size; i++)
|
||
elems[i] = ac_llvm_extract_elem(ctx, a, i);
|
||
for (unsigned i = 0; i < b_size; i++)
|
||
elems[a_size + i] = ac_llvm_extract_elem(ctx, b, i);
|
||
|
||
return ac_build_gather_values(ctx, elems, a_size + b_size);
|
||
}
|
||
|
||
/* Expand a scalar or vector to <dst_channels x type> by filling the remaining
|
||
* channels with undef. Extract at most src_channels components from the input.
|
||
*/
|
||
LLVMValueRef ac_build_expand(struct ac_llvm_context *ctx, LLVMValueRef value,
|
||
unsigned src_channels, unsigned dst_channels)
|
||
{
|
||
LLVMTypeRef elemtype;
|
||
LLVMValueRef *const chan = alloca(dst_channels * sizeof(LLVMValueRef));
|
||
|
||
if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMVectorTypeKind) {
|
||
unsigned vec_size = LLVMGetVectorSize(LLVMTypeOf(value));
|
||
|
||
if (src_channels == dst_channels && vec_size == dst_channels)
|
||
return value;
|
||
|
||
src_channels = MIN2(src_channels, vec_size);
|
||
|
||
for (unsigned i = 0; i < src_channels; i++)
|
||
chan[i] = ac_llvm_extract_elem(ctx, value, i);
|
||
|
||
elemtype = LLVMGetElementType(LLVMTypeOf(value));
|
||
} else {
|
||
if (src_channels) {
|
||
assert(src_channels == 1);
|
||
chan[0] = value;
|
||
}
|
||
elemtype = LLVMTypeOf(value);
|
||
}
|
||
|
||
for (unsigned i = src_channels; i < dst_channels; i++)
|
||
chan[i] = LLVMGetUndef(elemtype);
|
||
|
||
return ac_build_gather_values(ctx, chan, dst_channels);
|
||
}
|
||
|
||
/* Extract components [start, start + channels) from a vector.
|
||
*/
|
||
LLVMValueRef ac_extract_components(struct ac_llvm_context *ctx, LLVMValueRef value, unsigned start,
|
||
unsigned channels)
|
||
{
|
||
LLVMValueRef *const chan = alloca(channels * sizeof(LLVMValueRef));
|
||
|
||
for (unsigned i = 0; i < channels; i++)
|
||
chan[i] = ac_llvm_extract_elem(ctx, value, i + start);
|
||
|
||
return ac_build_gather_values(ctx, chan, channels);
|
||
}
|
||
|
||
/* Expand a scalar or vector to <4 x type> by filling the remaining channels
|
||
* with undef. Extract at most num_channels components from the input.
|
||
*/
|
||
LLVMValueRef ac_build_expand_to_vec4(struct ac_llvm_context *ctx, LLVMValueRef value,
|
||
unsigned num_channels)
|
||
{
|
||
return ac_build_expand(ctx, value, num_channels, 4);
|
||
}
|
||
|
||
LLVMValueRef ac_build_round(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
unsigned type_size = ac_get_type_size(LLVMTypeOf(value));
|
||
const char *name;
|
||
|
||
if (type_size == 2)
|
||
name = "llvm.rint.f16";
|
||
else if (type_size == 4)
|
||
name = "llvm.rint.f32";
|
||
else
|
||
name = "llvm.rint.f64";
|
||
|
||
return ac_build_intrinsic(ctx, name, LLVMTypeOf(value), &value, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_fdiv(struct ac_llvm_context *ctx, LLVMValueRef num, LLVMValueRef den)
|
||
{
|
||
unsigned type_size = ac_get_type_size(LLVMTypeOf(den));
|
||
const char *name;
|
||
|
||
/* For doubles, we need precise division to pass GLCTS. */
|
||
if (ctx->float_mode == AC_FLOAT_MODE_DEFAULT_OPENGL && type_size == 8)
|
||
return LLVMBuildFDiv(ctx->builder, num, den, "");
|
||
|
||
if (type_size == 2)
|
||
name = "llvm.amdgcn.rcp.f16";
|
||
else if (type_size == 4)
|
||
name = "llvm.amdgcn.rcp.f32";
|
||
else
|
||
name = "llvm.amdgcn.rcp.f64";
|
||
|
||
LLVMValueRef rcp =
|
||
ac_build_intrinsic(ctx, name, LLVMTypeOf(den), &den, 1, AC_FUNC_ATTR_READNONE);
|
||
|
||
return LLVMBuildFMul(ctx->builder, num, rcp, "");
|
||
}
|
||
|
||
/* See fast_idiv_by_const.h. */
|
||
/* Set: increment = util_fast_udiv_info::increment ? multiplier : 0; */
|
||
LLVMValueRef ac_build_fast_udiv(struct ac_llvm_context *ctx, LLVMValueRef num,
|
||
LLVMValueRef multiplier, LLVMValueRef pre_shift,
|
||
LLVMValueRef post_shift, LLVMValueRef increment)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
|
||
num = LLVMBuildLShr(builder, num, pre_shift, "");
|
||
num = LLVMBuildMul(builder, LLVMBuildZExt(builder, num, ctx->i64, ""),
|
||
LLVMBuildZExt(builder, multiplier, ctx->i64, ""), "");
|
||
num = LLVMBuildAdd(builder, num, LLVMBuildZExt(builder, increment, ctx->i64, ""), "");
|
||
num = LLVMBuildLShr(builder, num, LLVMConstInt(ctx->i64, 32, 0), "");
|
||
num = LLVMBuildTrunc(builder, num, ctx->i32, "");
|
||
return LLVMBuildLShr(builder, num, post_shift, "");
|
||
}
|
||
|
||
/* See fast_idiv_by_const.h. */
|
||
/* If num != UINT_MAX, this more efficient version can be used. */
|
||
/* Set: increment = util_fast_udiv_info::increment; */
|
||
LLVMValueRef ac_build_fast_udiv_nuw(struct ac_llvm_context *ctx, LLVMValueRef num,
|
||
LLVMValueRef multiplier, LLVMValueRef pre_shift,
|
||
LLVMValueRef post_shift, LLVMValueRef increment)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
|
||
num = LLVMBuildLShr(builder, num, pre_shift, "");
|
||
num = LLVMBuildNUWAdd(builder, num, increment, "");
|
||
num = LLVMBuildMul(builder, LLVMBuildZExt(builder, num, ctx->i64, ""),
|
||
LLVMBuildZExt(builder, multiplier, ctx->i64, ""), "");
|
||
num = LLVMBuildLShr(builder, num, LLVMConstInt(ctx->i64, 32, 0), "");
|
||
num = LLVMBuildTrunc(builder, num, ctx->i32, "");
|
||
return LLVMBuildLShr(builder, num, post_shift, "");
|
||
}
|
||
|
||
/* See fast_idiv_by_const.h. */
|
||
/* Both operands must fit in 31 bits and the divisor must not be 1. */
|
||
LLVMValueRef ac_build_fast_udiv_u31_d_not_one(struct ac_llvm_context *ctx, LLVMValueRef num,
|
||
LLVMValueRef multiplier, LLVMValueRef post_shift)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
|
||
num = LLVMBuildMul(builder, LLVMBuildZExt(builder, num, ctx->i64, ""),
|
||
LLVMBuildZExt(builder, multiplier, ctx->i64, ""), "");
|
||
num = LLVMBuildLShr(builder, num, LLVMConstInt(ctx->i64, 32, 0), "");
|
||
num = LLVMBuildTrunc(builder, num, ctx->i32, "");
|
||
return LLVMBuildLShr(builder, num, post_shift, "");
|
||
}
|
||
|
||
/* Coordinates for cube map selection. sc, tc, and ma are as in Table 8.27
|
||
* of the OpenGL 4.5 (Compatibility Profile) specification, except ma is
|
||
* already multiplied by two. id is the cube face number.
|
||
*/
|
||
struct cube_selection_coords {
|
||
LLVMValueRef stc[2];
|
||
LLVMValueRef ma;
|
||
LLVMValueRef id;
|
||
};
|
||
|
||
static void build_cube_intrinsic(struct ac_llvm_context *ctx, LLVMValueRef in[3],
|
||
struct cube_selection_coords *out)
|
||
{
|
||
LLVMTypeRef f32 = ctx->f32;
|
||
|
||
out->stc[1] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubetc", f32, in, 3, AC_FUNC_ATTR_READNONE);
|
||
out->stc[0] = ac_build_intrinsic(ctx, "llvm.amdgcn.cubesc", f32, in, 3, AC_FUNC_ATTR_READNONE);
|
||
out->ma = ac_build_intrinsic(ctx, "llvm.amdgcn.cubema", f32, in, 3, AC_FUNC_ATTR_READNONE);
|
||
out->id = ac_build_intrinsic(ctx, "llvm.amdgcn.cubeid", f32, in, 3, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
/**
|
||
* Build a manual selection sequence for cube face sc/tc coordinates and
|
||
* major axis vector (multiplied by 2 for consistency) for the given
|
||
* vec3 \p coords, for the face implied by \p selcoords.
|
||
*
|
||
* For the major axis, we always adjust the sign to be in the direction of
|
||
* selcoords.ma; i.e., a positive out_ma means that coords is pointed towards
|
||
* the selcoords major axis.
|
||
*/
|
||
static void build_cube_select(struct ac_llvm_context *ctx,
|
||
const struct cube_selection_coords *selcoords,
|
||
const LLVMValueRef *coords, LLVMValueRef *out_st,
|
||
LLVMValueRef *out_ma)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMTypeRef f32 = LLVMTypeOf(coords[0]);
|
||
LLVMValueRef is_ma_positive;
|
||
LLVMValueRef sgn_ma;
|
||
LLVMValueRef is_ma_z, is_not_ma_z;
|
||
LLVMValueRef is_ma_y;
|
||
LLVMValueRef is_ma_x;
|
||
LLVMValueRef sgn;
|
||
LLVMValueRef tmp;
|
||
|
||
is_ma_positive = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->ma, LLVMConstReal(f32, 0.0), "");
|
||
sgn_ma = LLVMBuildSelect(builder, is_ma_positive, LLVMConstReal(f32, 1.0),
|
||
LLVMConstReal(f32, -1.0), "");
|
||
|
||
is_ma_z = LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 4.0), "");
|
||
is_not_ma_z = LLVMBuildNot(builder, is_ma_z, "");
|
||
is_ma_y = LLVMBuildAnd(
|
||
builder, is_not_ma_z,
|
||
LLVMBuildFCmp(builder, LLVMRealUGE, selcoords->id, LLVMConstReal(f32, 2.0), ""), "");
|
||
is_ma_x = LLVMBuildAnd(builder, is_not_ma_z, LLVMBuildNot(builder, is_ma_y, ""), "");
|
||
|
||
/* Select sc */
|
||
tmp = LLVMBuildSelect(builder, is_ma_x, coords[2], coords[0], "");
|
||
sgn = LLVMBuildSelect(
|
||
builder, is_ma_y, LLVMConstReal(f32, 1.0),
|
||
LLVMBuildSelect(builder, is_ma_z, sgn_ma, LLVMBuildFNeg(builder, sgn_ma, ""), ""), "");
|
||
out_st[0] = LLVMBuildFMul(builder, tmp, sgn, "");
|
||
|
||
/* Select tc */
|
||
tmp = LLVMBuildSelect(builder, is_ma_y, coords[2], coords[1], "");
|
||
sgn = LLVMBuildSelect(builder, is_ma_y, sgn_ma, LLVMConstReal(f32, -1.0), "");
|
||
out_st[1] = LLVMBuildFMul(builder, tmp, sgn, "");
|
||
|
||
/* Select ma */
|
||
tmp = LLVMBuildSelect(builder, is_ma_z, coords[2],
|
||
LLVMBuildSelect(builder, is_ma_y, coords[1], coords[0], ""), "");
|
||
tmp = ac_build_intrinsic(ctx, "llvm.fabs.f32", ctx->f32, &tmp, 1, AC_FUNC_ATTR_READNONE);
|
||
*out_ma = LLVMBuildFMul(builder, tmp, LLVMConstReal(f32, 2.0), "");
|
||
}
|
||
|
||
void ac_prepare_cube_coords(struct ac_llvm_context *ctx, bool is_deriv, bool is_array, bool is_lod,
|
||
LLVMValueRef *coords_arg, LLVMValueRef *derivs_arg)
|
||
{
|
||
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
struct cube_selection_coords selcoords;
|
||
LLVMValueRef coords[3];
|
||
LLVMValueRef invma;
|
||
|
||
if (is_array && !is_lod) {
|
||
LLVMValueRef tmp = ac_build_round(ctx, coords_arg[3]);
|
||
|
||
/* Section 8.9 (Texture Functions) of the GLSL 4.50 spec says:
|
||
*
|
||
* "For Array forms, the array layer used will be
|
||
*
|
||
* max(0, min(d−1, floor(layer+0.5)))
|
||
*
|
||
* where d is the depth of the texture array and layer
|
||
* comes from the component indicated in the tables below.
|
||
* Workaroudn for an issue where the layer is taken from a
|
||
* helper invocation which happens to fall on a different
|
||
* layer due to extrapolation."
|
||
*
|
||
* GFX8 and earlier attempt to implement this in hardware by
|
||
* clamping the value of coords[2] = (8 * layer) + face.
|
||
* Unfortunately, this means that the we end up with the wrong
|
||
* face when clamping occurs.
|
||
*
|
||
* Clamp the layer earlier to work around the issue.
|
||
*/
|
||
if (ctx->gfx_level <= GFX8) {
|
||
LLVMValueRef ge0;
|
||
ge0 = LLVMBuildFCmp(builder, LLVMRealOGE, tmp, ctx->f32_0, "");
|
||
tmp = LLVMBuildSelect(builder, ge0, tmp, ctx->f32_0, "");
|
||
}
|
||
|
||
coords_arg[3] = tmp;
|
||
}
|
||
|
||
build_cube_intrinsic(ctx, coords_arg, &selcoords);
|
||
|
||
invma =
|
||
ac_build_intrinsic(ctx, "llvm.fabs.f32", ctx->f32, &selcoords.ma, 1, AC_FUNC_ATTR_READNONE);
|
||
invma = ac_build_fdiv(ctx, LLVMConstReal(ctx->f32, 1.0), invma);
|
||
|
||
for (int i = 0; i < 2; ++i)
|
||
coords[i] = LLVMBuildFMul(builder, selcoords.stc[i], invma, "");
|
||
|
||
coords[2] = selcoords.id;
|
||
|
||
if (is_deriv && derivs_arg) {
|
||
LLVMValueRef derivs[4];
|
||
int axis;
|
||
|
||
/* Convert cube derivatives to 2D derivatives. */
|
||
for (axis = 0; axis < 2; axis++) {
|
||
LLVMValueRef deriv_st[2];
|
||
LLVMValueRef deriv_ma;
|
||
|
||
/* Transform the derivative alongside the texture
|
||
* coordinate. Mathematically, the correct formula is
|
||
* as follows. Assume we're projecting onto the +Z face
|
||
* and denote by dx/dh the derivative of the (original)
|
||
* X texture coordinate with respect to horizontal
|
||
* window coordinates. The projection onto the +Z face
|
||
* plane is:
|
||
*
|
||
* f(x,z) = x/z
|
||
*
|
||
* Then df/dh = df/dx * dx/dh + df/dz * dz/dh
|
||
* = 1/z * dx/dh - x/z * 1/z * dz/dh.
|
||
*
|
||
* This motivatives the implementation below.
|
||
*
|
||
* Whether this actually gives the expected results for
|
||
* apps that might feed in derivatives obtained via
|
||
* finite differences is anyone's guess. The OpenGL spec
|
||
* seems awfully quiet about how textureGrad for cube
|
||
* maps should be handled.
|
||
*/
|
||
build_cube_select(ctx, &selcoords, &derivs_arg[axis * 3], deriv_st, &deriv_ma);
|
||
|
||
deriv_ma = LLVMBuildFMul(builder, deriv_ma, invma, "");
|
||
|
||
for (int i = 0; i < 2; ++i)
|
||
derivs[axis * 2 + i] =
|
||
LLVMBuildFSub(builder, LLVMBuildFMul(builder, deriv_st[i], invma, ""),
|
||
LLVMBuildFMul(builder, deriv_ma, coords[i], ""), "");
|
||
}
|
||
|
||
memcpy(derivs_arg, derivs, sizeof(derivs));
|
||
}
|
||
|
||
/* Shift the texture coordinate. This must be applied after the
|
||
* derivative calculation.
|
||
*/
|
||
for (int i = 0; i < 2; ++i)
|
||
coords[i] = LLVMBuildFAdd(builder, coords[i], LLVMConstReal(ctx->f32, 1.5), "");
|
||
|
||
if (is_array) {
|
||
/* for cube arrays coord.z = coord.w(array_index) * 8 + face */
|
||
/* coords_arg.w component - array_index for cube arrays */
|
||
coords[2] = ac_build_fmad(ctx, coords_arg[3], LLVMConstReal(ctx->f32, 8.0), coords[2]);
|
||
}
|
||
|
||
memcpy(coords_arg, coords, sizeof(coords));
|
||
}
|
||
|
||
LLVMValueRef ac_build_fs_interp(struct ac_llvm_context *ctx, LLVMValueRef llvm_chan,
|
||
LLVMValueRef attr_number, LLVMValueRef params, LLVMValueRef i,
|
||
LLVMValueRef j)
|
||
{
|
||
LLVMValueRef args[5];
|
||
|
||
if (ctx->gfx_level >= GFX11) {
|
||
LLVMValueRef p;
|
||
LLVMValueRef p10;
|
||
|
||
args[0] = llvm_chan;
|
||
args[1] = attr_number;
|
||
args[2] = params;
|
||
|
||
p = ac_build_intrinsic(ctx, "llvm.amdgcn.lds.param.load",
|
||
ctx->f32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p;
|
||
args[1] = i;
|
||
args[2] = p;
|
||
|
||
p10 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.inreg.p10",
|
||
ctx->f32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p;
|
||
args[1] = j;
|
||
args[2] = p10;
|
||
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.inreg.p2",
|
||
ctx->f32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
|
||
} else {
|
||
LLVMValueRef p1;
|
||
|
||
args[0] = i;
|
||
args[1] = llvm_chan;
|
||
args[2] = attr_number;
|
||
args[3] = params;
|
||
|
||
p1 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p1",
|
||
ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p1;
|
||
args[1] = j;
|
||
args[2] = llvm_chan;
|
||
args[3] = attr_number;
|
||
args[4] = params;
|
||
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p2",
|
||
ctx->f32, args, 5, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_fs_interp_f16(struct ac_llvm_context *ctx, LLVMValueRef llvm_chan,
|
||
LLVMValueRef attr_number, LLVMValueRef params, LLVMValueRef i,
|
||
LLVMValueRef j, bool high_16bits)
|
||
{
|
||
LLVMValueRef args[6];
|
||
|
||
if (ctx->gfx_level >= GFX11) {
|
||
LLVMValueRef p;
|
||
LLVMValueRef p10;
|
||
|
||
args[0] = llvm_chan;
|
||
args[1] = attr_number;
|
||
args[2] = params;
|
||
|
||
p = ac_build_intrinsic(ctx, "llvm.amdgcn.lds.param.load",
|
||
ctx->f32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p;
|
||
args[1] = i;
|
||
args[2] = p;
|
||
args[3] = high_16bits ? ctx->i1true : ctx->i1false;
|
||
|
||
p10 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.inreg.p10.f16",
|
||
ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p;
|
||
args[1] = j;
|
||
args[2] = p10;
|
||
args[3] = high_16bits ? ctx->i1true : ctx->i1false;
|
||
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.inreg.p2.f16",
|
||
ctx->f32, args, 4, AC_FUNC_ATTR_READNONE);
|
||
|
||
} else {
|
||
LLVMValueRef p1;
|
||
|
||
args[0] = i;
|
||
args[1] = llvm_chan;
|
||
args[2] = attr_number;
|
||
args[3] = high_16bits ? ctx->i1true : ctx->i1false;
|
||
args[4] = params;
|
||
|
||
p1 = ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p1.f16", ctx->f32, args, 5,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
args[0] = p1;
|
||
args[1] = j;
|
||
args[2] = llvm_chan;
|
||
args[3] = attr_number;
|
||
args[4] = high_16bits ? ctx->i1true : ctx->i1false;
|
||
args[5] = params;
|
||
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.p2.f16", ctx->f16, args, 6,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_fs_interp_mov(struct ac_llvm_context *ctx, LLVMValueRef parameter,
|
||
LLVMValueRef llvm_chan, LLVMValueRef attr_number,
|
||
LLVMValueRef params)
|
||
{
|
||
LLVMValueRef args[4];
|
||
|
||
if (ctx->gfx_level >= GFX11) {
|
||
LLVMValueRef p;
|
||
|
||
args[0] = llvm_chan;
|
||
args[1] = attr_number;
|
||
args[2] = params;
|
||
|
||
p = ac_build_intrinsic(ctx, "llvm.amdgcn.lds.param.load",
|
||
ctx->f32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
p = ac_build_quad_swizzle(ctx, p, 0, 0, 0 ,0);
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.wqm.f32", ctx->f32, &p, 1, AC_FUNC_ATTR_READNONE);
|
||
} else {
|
||
args[0] = parameter;
|
||
args[1] = llvm_chan;
|
||
args[2] = attr_number;
|
||
args[3] = params;
|
||
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.interp.mov", ctx->f32, args, 4,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_gep_ptr(struct ac_llvm_context *ctx, LLVMValueRef base_ptr,
|
||
LLVMValueRef index)
|
||
{
|
||
return LLVMBuildGEP(ctx->builder, base_ptr, &index, 1, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_gep0(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, LLVMValueRef index)
|
||
{
|
||
LLVMValueRef indices[2] = {
|
||
ctx->i32_0,
|
||
index,
|
||
};
|
||
return LLVMBuildGEP(ctx->builder, base_ptr, indices, 2, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_pointer_add(struct ac_llvm_context *ctx, LLVMValueRef ptr, LLVMValueRef index)
|
||
{
|
||
LLVMValueRef offset_ptr = LLVMBuildGEP(ctx->builder, ptr, &index, 1, "");
|
||
return LLVMBuildPointerCast(ctx->builder, offset_ptr, LLVMTypeOf(ptr), "");
|
||
}
|
||
|
||
void ac_build_indexed_store(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, LLVMValueRef index,
|
||
LLVMValueRef value)
|
||
{
|
||
LLVMBuildStore(ctx->builder, value, ac_build_gep0(ctx, base_ptr, index));
|
||
}
|
||
|
||
/**
|
||
* Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad.
|
||
* It's equivalent to doing a load from &base_ptr[index].
|
||
*
|
||
* \param base_ptr Where the array starts.
|
||
* \param index The element index into the array.
|
||
* \param uniform Whether the base_ptr and index can be assumed to be
|
||
* dynamically uniform (i.e. load to an SGPR)
|
||
* \param invariant Whether the load is invariant (no other opcodes affect it)
|
||
* \param no_unsigned_wraparound
|
||
* For all possible re-associations and re-distributions of an expression
|
||
* "base_ptr + index * elemsize" into "addr + offset" (excluding GEPs
|
||
* without inbounds in base_ptr), this parameter is true if "addr + offset"
|
||
* does not result in an unsigned integer wraparound. This is used for
|
||
* optimal code generation of 32-bit pointer arithmetic.
|
||
*
|
||
* For example, a 32-bit immediate offset that causes a 32-bit unsigned
|
||
* integer wraparound can't be an imm offset in s_load_dword, because
|
||
* the instruction performs "addr + offset" in 64 bits.
|
||
*
|
||
* Expected usage for bindless textures by chaining GEPs:
|
||
* // possible unsigned wraparound, don't use InBounds:
|
||
* ptr1 = LLVMBuildGEP(base_ptr, index);
|
||
* image = load(ptr1); // becomes "s_load ptr1, 0"
|
||
*
|
||
* ptr2 = LLVMBuildInBoundsGEP(ptr1, 32 / elemsize);
|
||
* sampler = load(ptr2); // becomes "s_load ptr1, 32" thanks to InBounds
|
||
*/
|
||
static LLVMValueRef ac_build_load_custom(struct ac_llvm_context *ctx, LLVMValueRef base_ptr,
|
||
LLVMValueRef index, bool uniform, bool invariant,
|
||
bool no_unsigned_wraparound)
|
||
{
|
||
LLVMValueRef pointer, result;
|
||
|
||
if (no_unsigned_wraparound &&
|
||
LLVMGetPointerAddressSpace(LLVMTypeOf(base_ptr)) == AC_ADDR_SPACE_CONST_32BIT)
|
||
pointer = LLVMBuildInBoundsGEP(ctx->builder, base_ptr, &index, 1, "");
|
||
else
|
||
pointer = LLVMBuildGEP(ctx->builder, base_ptr, &index, 1, "");
|
||
|
||
if (uniform)
|
||
LLVMSetMetadata(pointer, ctx->uniform_md_kind, ctx->empty_md);
|
||
result = LLVMBuildLoad(ctx->builder, pointer, "");
|
||
if (invariant)
|
||
LLVMSetMetadata(result, ctx->invariant_load_md_kind, ctx->empty_md);
|
||
LLVMSetAlignment(result, 4);
|
||
return result;
|
||
}
|
||
|
||
LLVMValueRef ac_build_load(struct ac_llvm_context *ctx, LLVMValueRef base_ptr, LLVMValueRef index)
|
||
{
|
||
return ac_build_load_custom(ctx, base_ptr, index, false, false, false);
|
||
}
|
||
|
||
LLVMValueRef ac_build_load_invariant(struct ac_llvm_context *ctx, LLVMValueRef base_ptr,
|
||
LLVMValueRef index)
|
||
{
|
||
return ac_build_load_custom(ctx, base_ptr, index, false, true, false);
|
||
}
|
||
|
||
/* This assumes that there is no unsigned integer wraparound during the address
|
||
* computation, excluding all GEPs within base_ptr. */
|
||
LLVMValueRef ac_build_load_to_sgpr(struct ac_llvm_context *ctx, LLVMValueRef base_ptr,
|
||
LLVMValueRef index)
|
||
{
|
||
return ac_build_load_custom(ctx, base_ptr, index, true, true, true);
|
||
}
|
||
|
||
/* See ac_build_load_custom() documentation. */
|
||
LLVMValueRef ac_build_load_to_sgpr_uint_wraparound(struct ac_llvm_context *ctx,
|
||
LLVMValueRef base_ptr, LLVMValueRef index)
|
||
{
|
||
return ac_build_load_custom(ctx, base_ptr, index, true, true, false);
|
||
}
|
||
|
||
static unsigned get_load_cache_policy(struct ac_llvm_context *ctx, unsigned cache_policy)
|
||
{
|
||
return cache_policy |
|
||
(ctx->gfx_level >= GFX10 && ctx->gfx_level < GFX11 && cache_policy & ac_glc ? ac_dlc : 0);
|
||
}
|
||
|
||
static unsigned get_store_cache_policy(struct ac_llvm_context *ctx, unsigned cache_policy)
|
||
{
|
||
if (ctx->gfx_level >= GFX11)
|
||
cache_policy &= ~ac_glc; /* GLC has no effect on stores */
|
||
return cache_policy;
|
||
}
|
||
|
||
static void ac_build_buffer_store_common(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef data, LLVMValueRef vindex,
|
||
LLVMValueRef voffset, LLVMValueRef soffset,
|
||
unsigned cache_policy, bool use_format)
|
||
{
|
||
LLVMValueRef args[6];
|
||
int idx = 0;
|
||
args[idx++] = data;
|
||
args[idx++] = LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, "");
|
||
if (vindex)
|
||
args[idx++] = vindex ? vindex : ctx->i32_0;
|
||
args[idx++] = voffset ? voffset : ctx->i32_0;
|
||
args[idx++] = soffset ? soffset : ctx->i32_0;
|
||
args[idx++] = LLVMConstInt(ctx->i32, get_store_cache_policy(ctx, cache_policy), 0);
|
||
const char *indexing_kind = vindex ? "struct" : "raw";
|
||
char name[256], type_name[8];
|
||
|
||
ac_build_type_name_for_intr(LLVMTypeOf(data), type_name, sizeof(type_name));
|
||
|
||
if (use_format) {
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.%s.buffer.store.format.%s", indexing_kind,
|
||
type_name);
|
||
} else {
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.%s.buffer.store.%s", indexing_kind, type_name);
|
||
}
|
||
|
||
ac_build_intrinsic(ctx, name, ctx->voidt, args, idx, AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY);
|
||
}
|
||
|
||
void ac_build_buffer_store_format(struct ac_llvm_context *ctx, LLVMValueRef rsrc, LLVMValueRef data,
|
||
LLVMValueRef vindex, LLVMValueRef voffset, unsigned cache_policy)
|
||
{
|
||
ac_build_buffer_store_common(ctx, rsrc, data, vindex, voffset, NULL, cache_policy, true);
|
||
}
|
||
|
||
/* buffer_store_dword(,x2,x3,x4) <- the suffix is selected by the type of vdata. */
|
||
void ac_build_buffer_store_dword(struct ac_llvm_context *ctx, LLVMValueRef rsrc, LLVMValueRef vdata,
|
||
LLVMValueRef vindex, LLVMValueRef voffset, LLVMValueRef soffset,
|
||
unsigned cache_policy)
|
||
{
|
||
unsigned num_channels = ac_get_llvm_num_components(vdata);
|
||
|
||
/* Split 3 channel stores if unsupported. */
|
||
if (num_channels == 3 && !ac_has_vec3_support(ctx->gfx_level, false)) {
|
||
LLVMValueRef v[3], v01, voffset2;
|
||
|
||
for (int i = 0; i < 3; i++) {
|
||
v[i] = LLVMBuildExtractElement(ctx->builder, vdata, LLVMConstInt(ctx->i32, i, 0), "");
|
||
}
|
||
v01 = ac_build_gather_values(ctx, v, 2);
|
||
|
||
voffset2 = LLVMBuildAdd(ctx->builder, voffset ? voffset : ctx->i32_0,
|
||
LLVMConstInt(ctx->i32, 8, 0), "");
|
||
|
||
ac_build_buffer_store_dword(ctx, rsrc, v01, vindex, voffset, soffset, cache_policy);
|
||
ac_build_buffer_store_dword(ctx, rsrc, v[2], vindex, voffset2, soffset, cache_policy);
|
||
return;
|
||
}
|
||
|
||
ac_build_buffer_store_common(ctx, rsrc, ac_to_float(ctx, vdata), vindex, voffset, soffset,
|
||
cache_policy, false);
|
||
}
|
||
|
||
static LLVMValueRef ac_build_buffer_load_common(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef vindex, LLVMValueRef voffset,
|
||
LLVMValueRef soffset, unsigned num_channels,
|
||
LLVMTypeRef channel_type, unsigned cache_policy,
|
||
bool can_speculate, bool use_format,
|
||
bool structurized)
|
||
{
|
||
LLVMValueRef args[5];
|
||
int idx = 0;
|
||
args[idx++] = LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, "");
|
||
if (structurized)
|
||
args[idx++] = vindex ? vindex : ctx->i32_0;
|
||
args[idx++] = voffset ? voffset : ctx->i32_0;
|
||
args[idx++] = soffset ? soffset : ctx->i32_0;
|
||
args[idx++] = LLVMConstInt(ctx->i32, get_load_cache_policy(ctx, cache_policy), 0);
|
||
unsigned func =
|
||
!ac_has_vec3_support(ctx->gfx_level, use_format) && num_channels == 3 ? 4 : num_channels;
|
||
const char *indexing_kind = structurized ? "struct" : "raw";
|
||
char name[256], type_name[8];
|
||
|
||
/* D16 is only supported on gfx8+ */
|
||
assert(!use_format || (channel_type != ctx->f16 && channel_type != ctx->i16) ||
|
||
ctx->gfx_level >= GFX8);
|
||
|
||
LLVMTypeRef type = func > 1 ? LLVMVectorType(channel_type, func) : channel_type;
|
||
ac_build_type_name_for_intr(type, type_name, sizeof(type_name));
|
||
|
||
if (use_format) {
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.%s.buffer.load.format.%s", indexing_kind,
|
||
type_name);
|
||
} else {
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.%s.buffer.load.%s", indexing_kind, type_name);
|
||
}
|
||
|
||
return ac_build_intrinsic(ctx, name, type, args, idx, ac_get_load_intr_attribs(can_speculate));
|
||
}
|
||
|
||
LLVMValueRef ac_build_buffer_load(struct ac_llvm_context *ctx, LLVMValueRef rsrc, int num_channels,
|
||
LLVMValueRef vindex, LLVMValueRef voffset, LLVMValueRef soffset,
|
||
LLVMTypeRef channel_type, unsigned cache_policy,
|
||
bool can_speculate, bool allow_smem)
|
||
{
|
||
if (allow_smem && !(cache_policy & ac_slc) &&
|
||
(!(cache_policy & ac_glc) || ctx->gfx_level >= GFX8)) {
|
||
assert(vindex == NULL);
|
||
|
||
LLVMValueRef result[8];
|
||
|
||
LLVMValueRef offset = voffset ? voffset : ctx->i32_0;
|
||
if (soffset)
|
||
offset = LLVMBuildAdd(ctx->builder, offset, soffset, "");
|
||
|
||
for (int i = 0; i < num_channels; i++) {
|
||
if (i) {
|
||
offset = LLVMBuildAdd(ctx->builder, offset, LLVMConstInt(ctx->i32, 4, 0), "");
|
||
}
|
||
LLVMValueRef args[3] = {
|
||
rsrc,
|
||
offset,
|
||
LLVMConstInt(ctx->i32, get_load_cache_policy(ctx, cache_policy), 0),
|
||
};
|
||
result[i] = ac_build_intrinsic(ctx, "llvm.amdgcn.s.buffer.load.f32", ctx->f32, args, 3,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
if (num_channels == 1)
|
||
return result[0];
|
||
|
||
if (num_channels == 3 && !ac_has_vec3_support(ctx->gfx_level, false))
|
||
result[num_channels++] = LLVMGetUndef(ctx->f32);
|
||
return ac_build_gather_values(ctx, result, num_channels);
|
||
}
|
||
|
||
return ac_build_buffer_load_common(ctx, rsrc, vindex, voffset, soffset, num_channels,
|
||
channel_type, cache_policy, can_speculate, false, false);
|
||
}
|
||
|
||
LLVMValueRef ac_build_buffer_load_format(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef vindex, LLVMValueRef voffset,
|
||
unsigned num_channels, unsigned cache_policy,
|
||
bool can_speculate, bool d16, bool tfe)
|
||
{
|
||
if (tfe) {
|
||
assert(!d16);
|
||
|
||
cache_policy = get_load_cache_policy(ctx, cache_policy);
|
||
|
||
char code[256];
|
||
/* The definition in the assembly and the one in the constraint string
|
||
* differs because of an assembler bug.
|
||
*/
|
||
snprintf(code, sizeof(code),
|
||
"v_mov_b32 v0, 0\n"
|
||
"v_mov_b32 v1, 0\n"
|
||
"v_mov_b32 v2, 0\n"
|
||
"v_mov_b32 v3, 0\n"
|
||
"v_mov_b32 v4, 0\n"
|
||
"buffer_load_format_xyzw v[0:3], $1, $2, 0, idxen offen %s %s tfe %s\n"
|
||
"s_waitcnt vmcnt(0)",
|
||
cache_policy & ac_glc ? "glc" : "",
|
||
cache_policy & ac_slc ? "slc" : "",
|
||
cache_policy & ac_dlc ? "dlc" : "");
|
||
|
||
LLVMTypeRef param_types[] = {ctx->v2i32, ctx->v4i32};
|
||
LLVMTypeRef calltype = LLVMFunctionType(LLVMVectorType(ctx->f32, 5), param_types, 2, false);
|
||
LLVMValueRef inlineasm = LLVMConstInlineAsm(calltype, code, "=&{v[0:4]},v,s", false, false);
|
||
|
||
LLVMValueRef addr_comp[2] = {vindex ? vindex : ctx->i32_0,
|
||
voffset ? voffset : ctx->i32_0};
|
||
|
||
LLVMValueRef args[] = {ac_build_gather_values(ctx, addr_comp, 2),
|
||
LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, "")};
|
||
LLVMValueRef res = LLVMBuildCall2(ctx->builder, calltype, inlineasm, args, 2, "");
|
||
|
||
return ac_build_concat(ctx, ac_trim_vector(ctx, res, num_channels),
|
||
ac_llvm_extract_elem(ctx, res, 4));
|
||
}
|
||
|
||
return ac_build_buffer_load_common(ctx, rsrc, vindex, voffset, ctx->i32_0, num_channels,
|
||
d16 ? ctx->f16 : ctx->f32, cache_policy, can_speculate, true,
|
||
true);
|
||
}
|
||
|
||
static LLVMValueRef ac_build_tbuffer_load(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef vindex, LLVMValueRef voffset,
|
||
LLVMValueRef soffset, unsigned num_channels,
|
||
unsigned dfmt, unsigned nfmt, unsigned cache_policy,
|
||
bool can_speculate, bool structurized)
|
||
{
|
||
LLVMValueRef args[6];
|
||
int idx = 0;
|
||
args[idx++] = LLVMBuildBitCast(ctx->builder, rsrc, ctx->v4i32, "");
|
||
if (structurized)
|
||
args[idx++] = vindex ? vindex : ctx->i32_0;
|
||
args[idx++] = voffset ? voffset : ctx->i32_0;
|
||
args[idx++] = soffset ? soffset : ctx->i32_0;
|
||
args[idx++] = LLVMConstInt(ctx->i32, ac_get_tbuffer_format(ctx->gfx_level, dfmt, nfmt), 0);
|
||
args[idx++] = LLVMConstInt(ctx->i32, get_load_cache_policy(ctx, cache_policy), 0);
|
||
unsigned func =
|
||
!ac_has_vec3_support(ctx->gfx_level, true) && num_channels == 3 ? 4 : num_channels;
|
||
const char *indexing_kind = structurized ? "struct" : "raw";
|
||
char name[256], type_name[8];
|
||
|
||
LLVMTypeRef type = func > 1 ? LLVMVectorType(ctx->i32, func) : ctx->i32;
|
||
ac_build_type_name_for_intr(type, type_name, sizeof(type_name));
|
||
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.%s.tbuffer.load.%s", indexing_kind, type_name);
|
||
|
||
return ac_build_intrinsic(ctx, name, type, args, idx, ac_get_load_intr_attribs(can_speculate));
|
||
}
|
||
|
||
LLVMValueRef ac_build_struct_tbuffer_load(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef vindex, LLVMValueRef voffset,
|
||
LLVMValueRef soffset, unsigned num_channels,
|
||
unsigned dfmt, unsigned nfmt, unsigned cache_policy,
|
||
bool can_speculate)
|
||
{
|
||
return ac_build_tbuffer_load(ctx, rsrc, vindex, voffset, soffset, num_channels, dfmt,
|
||
nfmt, cache_policy, can_speculate, true);
|
||
}
|
||
|
||
LLVMValueRef ac_build_buffer_load_short(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef voffset, LLVMValueRef soffset,
|
||
unsigned cache_policy)
|
||
{
|
||
return ac_build_buffer_load_common(ctx, rsrc, NULL, voffset, soffset, 1, ctx->i16,
|
||
cache_policy, false, false, false);
|
||
}
|
||
|
||
LLVMValueRef ac_build_buffer_load_byte(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef voffset, LLVMValueRef soffset,
|
||
unsigned cache_policy)
|
||
{
|
||
return ac_build_buffer_load_common(ctx, rsrc, NULL, voffset, soffset, 1, ctx->i8, cache_policy,
|
||
false, false, false);
|
||
}
|
||
|
||
/**
|
||
* Convert an 11- or 10-bit unsigned floating point number to an f32.
|
||
*
|
||
* The input exponent is expected to be biased analogous to IEEE-754, i.e. by
|
||
* 2^(exp_bits-1) - 1 (as defined in OpenGL and other graphics APIs).
|
||
*/
|
||
static LLVMValueRef ac_ufN_to_float(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
unsigned exp_bits, unsigned mant_bits)
|
||
{
|
||
assert(LLVMTypeOf(src) == ctx->i32);
|
||
|
||
LLVMValueRef tmp;
|
||
LLVMValueRef mantissa;
|
||
mantissa =
|
||
LLVMBuildAnd(ctx->builder, src, LLVMConstInt(ctx->i32, (1 << mant_bits) - 1, false), "");
|
||
|
||
/* Converting normal numbers is just a shift + correcting the exponent bias */
|
||
unsigned normal_shift = 23 - mant_bits;
|
||
unsigned bias_shift = 127 - ((1 << (exp_bits - 1)) - 1);
|
||
LLVMValueRef shifted, normal;
|
||
|
||
shifted = LLVMBuildShl(ctx->builder, src, LLVMConstInt(ctx->i32, normal_shift, false), "");
|
||
normal =
|
||
LLVMBuildAdd(ctx->builder, shifted, LLVMConstInt(ctx->i32, bias_shift << 23, false), "");
|
||
|
||
/* Converting nan/inf numbers is the same, but with a different exponent update */
|
||
LLVMValueRef naninf;
|
||
naninf = LLVMBuildOr(ctx->builder, normal, LLVMConstInt(ctx->i32, 0xff << 23, false), "");
|
||
|
||
/* Converting denormals is the complex case: determine the leading zeros of the
|
||
* mantissa to obtain the correct shift for the mantissa and exponent correction.
|
||
*/
|
||
LLVMValueRef denormal;
|
||
LLVMValueRef params[2] = {
|
||
mantissa, ctx->i1true, /* result can be undef when arg is 0 */
|
||
};
|
||
LLVMValueRef ctlz =
|
||
ac_build_intrinsic(ctx, "llvm.ctlz.i32", ctx->i32, params, 2, AC_FUNC_ATTR_READNONE);
|
||
|
||
/* Shift such that the leading 1 ends up as the LSB of the exponent field. */
|
||
tmp = LLVMBuildSub(ctx->builder, ctlz, LLVMConstInt(ctx->i32, 8, false), "");
|
||
denormal = LLVMBuildShl(ctx->builder, mantissa, tmp, "");
|
||
|
||
unsigned denormal_exp = bias_shift + (32 - mant_bits) - 1;
|
||
tmp = LLVMBuildSub(ctx->builder, LLVMConstInt(ctx->i32, denormal_exp, false), ctlz, "");
|
||
tmp = LLVMBuildShl(ctx->builder, tmp, LLVMConstInt(ctx->i32, 23, false), "");
|
||
denormal = LLVMBuildAdd(ctx->builder, denormal, tmp, "");
|
||
|
||
/* Select the final result. */
|
||
LLVMValueRef result;
|
||
|
||
tmp = LLVMBuildICmp(ctx->builder, LLVMIntUGE, src,
|
||
LLVMConstInt(ctx->i32, ((1ULL << exp_bits) - 1) << mant_bits, false), "");
|
||
result = LLVMBuildSelect(ctx->builder, tmp, naninf, normal, "");
|
||
|
||
tmp = LLVMBuildICmp(ctx->builder, LLVMIntUGE, src,
|
||
LLVMConstInt(ctx->i32, 1ULL << mant_bits, false), "");
|
||
result = LLVMBuildSelect(ctx->builder, tmp, result, denormal, "");
|
||
|
||
tmp = LLVMBuildICmp(ctx->builder, LLVMIntNE, src, ctx->i32_0, "");
|
||
result = LLVMBuildSelect(ctx->builder, tmp, result, ctx->i32_0, "");
|
||
|
||
return ac_to_float(ctx, result);
|
||
}
|
||
|
||
/**
|
||
* Generate a fully general open coded buffer format fetch with all required
|
||
* fixups suitable for vertex fetch, using non-format buffer loads.
|
||
*
|
||
* Some combinations of argument values have special interpretations:
|
||
* - size = 8 bytes, format = fixed indicates PIPE_FORMAT_R11G11B10_FLOAT
|
||
* - size = 8 bytes, format != {float,fixed} indicates a 2_10_10_10 data format
|
||
*
|
||
* \param log_size log(size of channel in bytes)
|
||
* \param num_channels number of channels (1 to 4)
|
||
* \param format AC_FETCH_FORMAT_xxx value
|
||
* \param reverse whether XYZ channels are reversed
|
||
* \param known_aligned whether the source is known to be aligned to hardware's
|
||
* effective element size for loading the given format
|
||
* (note: this means dword alignment for 8_8_8_8, 16_16, etc.)
|
||
* \param rsrc buffer resource descriptor
|
||
* \return the resulting vector of floats or integers bitcast to <4 x i32>
|
||
*/
|
||
LLVMValueRef ac_build_opencoded_load_format(struct ac_llvm_context *ctx, unsigned log_size,
|
||
unsigned num_channels, unsigned format, bool reverse,
|
||
bool known_aligned, LLVMValueRef rsrc,
|
||
LLVMValueRef vindex, LLVMValueRef voffset,
|
||
LLVMValueRef soffset, unsigned cache_policy,
|
||
bool can_speculate)
|
||
{
|
||
LLVMValueRef tmp;
|
||
unsigned load_log_size = log_size;
|
||
unsigned load_num_channels = num_channels;
|
||
if (log_size == 3) {
|
||
load_log_size = 2;
|
||
if (format == AC_FETCH_FORMAT_FLOAT) {
|
||
load_num_channels = 2 * num_channels;
|
||
} else {
|
||
load_num_channels = 1; /* 10_11_11 or 2_10_10_10 */
|
||
}
|
||
}
|
||
|
||
int log_recombine = 0;
|
||
if ((ctx->gfx_level == GFX6 || ctx->gfx_level >= GFX10) && !known_aligned) {
|
||
/* Avoid alignment restrictions by loading one byte at a time. */
|
||
load_num_channels <<= load_log_size;
|
||
log_recombine = load_log_size;
|
||
load_log_size = 0;
|
||
} else if (load_num_channels == 2 || load_num_channels == 4) {
|
||
log_recombine = -util_logbase2(load_num_channels);
|
||
load_num_channels = 1;
|
||
load_log_size += -log_recombine;
|
||
}
|
||
|
||
LLVMValueRef loads[32]; /* up to 32 bytes */
|
||
for (unsigned i = 0; i < load_num_channels; ++i) {
|
||
tmp =
|
||
LLVMBuildAdd(ctx->builder, soffset, LLVMConstInt(ctx->i32, i << load_log_size, false), "");
|
||
LLVMTypeRef channel_type =
|
||
load_log_size == 0 ? ctx->i8 : load_log_size == 1 ? ctx->i16 : ctx->i32;
|
||
unsigned num_channels = 1 << (MAX2(load_log_size, 2) - 2);
|
||
loads[i] =
|
||
ac_build_buffer_load_common(ctx, rsrc, vindex, voffset, tmp, num_channels, channel_type,
|
||
cache_policy, can_speculate, false, true);
|
||
if (load_log_size >= 2)
|
||
loads[i] = ac_to_integer(ctx, loads[i]);
|
||
}
|
||
|
||
if (log_recombine > 0) {
|
||
/* Recombine bytes if necessary (GFX6 only) */
|
||
LLVMTypeRef dst_type = log_recombine == 2 ? ctx->i32 : ctx->i16;
|
||
|
||
for (unsigned src = 0, dst = 0; src < load_num_channels; ++dst) {
|
||
LLVMValueRef accum = NULL;
|
||
for (unsigned i = 0; i < (1 << log_recombine); ++i, ++src) {
|
||
tmp = LLVMBuildZExt(ctx->builder, loads[src], dst_type, "");
|
||
if (i == 0) {
|
||
accum = tmp;
|
||
} else {
|
||
tmp = LLVMBuildShl(ctx->builder, tmp, LLVMConstInt(dst_type, 8 * i, false), "");
|
||
accum = LLVMBuildOr(ctx->builder, accum, tmp, "");
|
||
}
|
||
}
|
||
loads[dst] = accum;
|
||
}
|
||
} else if (log_recombine < 0) {
|
||
/* Split vectors of dwords */
|
||
if (load_log_size > 2) {
|
||
assert(load_num_channels == 1);
|
||
LLVMValueRef loaded = loads[0];
|
||
unsigned log_split = load_log_size - 2;
|
||
log_recombine += log_split;
|
||
load_num_channels = 1 << log_split;
|
||
load_log_size = 2;
|
||
for (unsigned i = 0; i < load_num_channels; ++i) {
|
||
tmp = LLVMConstInt(ctx->i32, i, false);
|
||
loads[i] = LLVMBuildExtractElement(ctx->builder, loaded, tmp, "");
|
||
}
|
||
}
|
||
|
||
/* Further split dwords and shorts if required */
|
||
if (log_recombine < 0) {
|
||
for (unsigned src = load_num_channels, dst = load_num_channels << -log_recombine; src > 0;
|
||
--src) {
|
||
unsigned dst_bits = 1 << (3 + load_log_size + log_recombine);
|
||
LLVMTypeRef dst_type = LLVMIntTypeInContext(ctx->context, dst_bits);
|
||
LLVMValueRef loaded = loads[src - 1];
|
||
LLVMTypeRef loaded_type = LLVMTypeOf(loaded);
|
||
for (unsigned i = 1 << -log_recombine; i > 0; --i, --dst) {
|
||
tmp = LLVMConstInt(loaded_type, dst_bits * (i - 1), false);
|
||
tmp = LLVMBuildLShr(ctx->builder, loaded, tmp, "");
|
||
loads[dst - 1] = LLVMBuildTrunc(ctx->builder, tmp, dst_type, "");
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if (log_size == 3) {
|
||
if (format == AC_FETCH_FORMAT_FLOAT) {
|
||
for (unsigned i = 0; i < num_channels; ++i) {
|
||
tmp = ac_build_gather_values(ctx, &loads[2 * i], 2);
|
||
loads[i] = LLVMBuildBitCast(ctx->builder, tmp, ctx->f64, "");
|
||
}
|
||
} else if (format == AC_FETCH_FORMAT_FIXED) {
|
||
/* 10_11_11_FLOAT */
|
||
LLVMValueRef data = loads[0];
|
||
LLVMValueRef i32_2047 = LLVMConstInt(ctx->i32, 2047, false);
|
||
LLVMValueRef r = LLVMBuildAnd(ctx->builder, data, i32_2047, "");
|
||
tmp = LLVMBuildLShr(ctx->builder, data, LLVMConstInt(ctx->i32, 11, false), "");
|
||
LLVMValueRef g = LLVMBuildAnd(ctx->builder, tmp, i32_2047, "");
|
||
LLVMValueRef b = LLVMBuildLShr(ctx->builder, data, LLVMConstInt(ctx->i32, 22, false), "");
|
||
|
||
loads[0] = ac_to_integer(ctx, ac_ufN_to_float(ctx, r, 5, 6));
|
||
loads[1] = ac_to_integer(ctx, ac_ufN_to_float(ctx, g, 5, 6));
|
||
loads[2] = ac_to_integer(ctx, ac_ufN_to_float(ctx, b, 5, 5));
|
||
|
||
num_channels = 3;
|
||
log_size = 2;
|
||
format = AC_FETCH_FORMAT_FLOAT;
|
||
} else {
|
||
/* 2_10_10_10 data formats */
|
||
LLVMValueRef data = loads[0];
|
||
LLVMTypeRef i10 = LLVMIntTypeInContext(ctx->context, 10);
|
||
LLVMTypeRef i2 = LLVMIntTypeInContext(ctx->context, 2);
|
||
loads[0] = LLVMBuildTrunc(ctx->builder, data, i10, "");
|
||
tmp = LLVMBuildLShr(ctx->builder, data, LLVMConstInt(ctx->i32, 10, false), "");
|
||
loads[1] = LLVMBuildTrunc(ctx->builder, tmp, i10, "");
|
||
tmp = LLVMBuildLShr(ctx->builder, data, LLVMConstInt(ctx->i32, 20, false), "");
|
||
loads[2] = LLVMBuildTrunc(ctx->builder, tmp, i10, "");
|
||
tmp = LLVMBuildLShr(ctx->builder, data, LLVMConstInt(ctx->i32, 30, false), "");
|
||
loads[3] = LLVMBuildTrunc(ctx->builder, tmp, i2, "");
|
||
|
||
num_channels = 4;
|
||
}
|
||
}
|
||
|
||
if (format == AC_FETCH_FORMAT_FLOAT) {
|
||
if (log_size != 2) {
|
||
for (unsigned chan = 0; chan < num_channels; ++chan) {
|
||
tmp = ac_to_float(ctx, loads[chan]);
|
||
if (log_size == 3)
|
||
tmp = LLVMBuildFPTrunc(ctx->builder, tmp, ctx->f32, "");
|
||
else if (log_size == 1)
|
||
tmp = LLVMBuildFPExt(ctx->builder, tmp, ctx->f32, "");
|
||
loads[chan] = ac_to_integer(ctx, tmp);
|
||
}
|
||
}
|
||
} else if (format == AC_FETCH_FORMAT_UINT) {
|
||
if (log_size != 2) {
|
||
for (unsigned chan = 0; chan < num_channels; ++chan)
|
||
loads[chan] = LLVMBuildZExt(ctx->builder, loads[chan], ctx->i32, "");
|
||
}
|
||
} else if (format == AC_FETCH_FORMAT_SINT) {
|
||
if (log_size != 2) {
|
||
for (unsigned chan = 0; chan < num_channels; ++chan)
|
||
loads[chan] = LLVMBuildSExt(ctx->builder, loads[chan], ctx->i32, "");
|
||
}
|
||
} else {
|
||
bool unsign = format == AC_FETCH_FORMAT_UNORM || format == AC_FETCH_FORMAT_USCALED ||
|
||
format == AC_FETCH_FORMAT_UINT;
|
||
|
||
for (unsigned chan = 0; chan < num_channels; ++chan) {
|
||
if (unsign) {
|
||
tmp = LLVMBuildUIToFP(ctx->builder, loads[chan], ctx->f32, "");
|
||
} else {
|
||
tmp = LLVMBuildSIToFP(ctx->builder, loads[chan], ctx->f32, "");
|
||
}
|
||
|
||
LLVMValueRef scale = NULL;
|
||
if (format == AC_FETCH_FORMAT_FIXED) {
|
||
assert(log_size == 2);
|
||
scale = LLVMConstReal(ctx->f32, 1.0 / 0x10000);
|
||
} else if (format == AC_FETCH_FORMAT_UNORM) {
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(loads[chan]));
|
||
scale = LLVMConstReal(ctx->f32, 1.0 / (((uint64_t)1 << bits) - 1));
|
||
} else if (format == AC_FETCH_FORMAT_SNORM) {
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(loads[chan]));
|
||
scale = LLVMConstReal(ctx->f32, 1.0 / (((uint64_t)1 << (bits - 1)) - 1));
|
||
}
|
||
if (scale)
|
||
tmp = LLVMBuildFMul(ctx->builder, tmp, scale, "");
|
||
|
||
if (format == AC_FETCH_FORMAT_SNORM) {
|
||
/* Clamp to [-1, 1] */
|
||
LLVMValueRef neg_one = LLVMConstReal(ctx->f32, -1.0);
|
||
LLVMValueRef clamp = LLVMBuildFCmp(ctx->builder, LLVMRealULT, tmp, neg_one, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, clamp, neg_one, tmp, "");
|
||
}
|
||
|
||
loads[chan] = ac_to_integer(ctx, tmp);
|
||
}
|
||
}
|
||
|
||
while (num_channels < 4) {
|
||
if (format == AC_FETCH_FORMAT_UINT || format == AC_FETCH_FORMAT_SINT) {
|
||
loads[num_channels] = num_channels == 3 ? ctx->i32_1 : ctx->i32_0;
|
||
} else {
|
||
loads[num_channels] = ac_to_integer(ctx, num_channels == 3 ? ctx->f32_1 : ctx->f32_0);
|
||
}
|
||
num_channels++;
|
||
}
|
||
|
||
if (reverse) {
|
||
tmp = loads[0];
|
||
loads[0] = loads[2];
|
||
loads[2] = tmp;
|
||
}
|
||
|
||
return ac_build_gather_values(ctx, loads, 4);
|
||
}
|
||
|
||
void ac_build_buffer_store_short(struct ac_llvm_context *ctx, LLVMValueRef rsrc,
|
||
LLVMValueRef vdata, LLVMValueRef voffset, LLVMValueRef soffset,
|
||
unsigned cache_policy)
|
||
{
|
||
vdata = LLVMBuildBitCast(ctx->builder, vdata, ctx->i16, "");
|
||
|
||
ac_build_buffer_store_common(ctx, rsrc, vdata, NULL, voffset, soffset, cache_policy, false);
|
||
}
|
||
|
||
void ac_build_buffer_store_byte(struct ac_llvm_context *ctx, LLVMValueRef rsrc, LLVMValueRef vdata,
|
||
LLVMValueRef voffset, LLVMValueRef soffset, unsigned cache_policy)
|
||
{
|
||
vdata = LLVMBuildBitCast(ctx->builder, vdata, ctx->i8, "");
|
||
|
||
ac_build_buffer_store_common(ctx, rsrc, vdata, NULL, voffset, soffset, cache_policy, false);
|
||
}
|
||
|
||
/**
|
||
* Set range metadata on an instruction. This can only be used on load and
|
||
* call instructions. If you know an instruction can only produce the values
|
||
* 0, 1, 2, you would do set_range_metadata(value, 0, 3);
|
||
* \p lo is the minimum value inclusive.
|
||
* \p hi is the maximum value exclusive.
|
||
*/
|
||
void ac_set_range_metadata(struct ac_llvm_context *ctx, LLVMValueRef value, unsigned lo,
|
||
unsigned hi)
|
||
{
|
||
LLVMValueRef range_md, md_args[2];
|
||
LLVMTypeRef type = LLVMTypeOf(value);
|
||
LLVMContextRef context = LLVMGetTypeContext(type);
|
||
|
||
md_args[0] = LLVMConstInt(type, lo, false);
|
||
md_args[1] = LLVMConstInt(type, hi, false);
|
||
range_md = LLVMMDNodeInContext(context, md_args, 2);
|
||
LLVMSetMetadata(value, ctx->range_md_kind, range_md);
|
||
}
|
||
|
||
LLVMValueRef ac_get_thread_id(struct ac_llvm_context *ctx)
|
||
{
|
||
return ac_build_mbcnt(ctx, LLVMConstInt(ctx->iN_wavemask, ~0ull, 0));
|
||
}
|
||
|
||
/*
|
||
* AMD GCN implements derivatives using the local data store (LDS)
|
||
* All writes to the LDS happen in all executing threads at
|
||
* the same time. TID is the Thread ID for the current
|
||
* thread and is a value between 0 and 63, representing
|
||
* the thread's position in the wavefront.
|
||
*
|
||
* For the pixel shader threads are grouped into quads of four pixels.
|
||
* The TIDs of the pixels of a quad are:
|
||
*
|
||
* +------+------+
|
||
* |4n + 0|4n + 1|
|
||
* +------+------+
|
||
* |4n + 2|4n + 3|
|
||
* +------+------+
|
||
*
|
||
* So, masking the TID with 0xfffffffc yields the TID of the top left pixel
|
||
* of the quad, masking with 0xfffffffd yields the TID of the top pixel of
|
||
* the current pixel's column, and masking with 0xfffffffe yields the TID
|
||
* of the left pixel of the current pixel's row.
|
||
*
|
||
* Adding 1 yields the TID of the pixel to the right of the left pixel, and
|
||
* adding 2 yields the TID of the pixel below the top pixel.
|
||
*/
|
||
LLVMValueRef ac_build_ddxy(struct ac_llvm_context *ctx, uint32_t mask, int idx, LLVMValueRef val)
|
||
{
|
||
unsigned tl_lanes[4], trbl_lanes[4];
|
||
char name[32], type[8];
|
||
LLVMValueRef tl, trbl;
|
||
LLVMTypeRef result_type;
|
||
LLVMValueRef result;
|
||
|
||
result_type = ac_to_float_type(ctx, LLVMTypeOf(val));
|
||
|
||
if (result_type == ctx->f16)
|
||
val = LLVMBuildZExt(ctx->builder, val, ctx->i32, "");
|
||
else if (result_type == ctx->v2f16)
|
||
val = LLVMBuildBitCast(ctx->builder, val, ctx->i32, "");
|
||
|
||
for (unsigned i = 0; i < 4; ++i) {
|
||
tl_lanes[i] = i & mask;
|
||
trbl_lanes[i] = (i & mask) + idx;
|
||
}
|
||
|
||
tl = ac_build_quad_swizzle(ctx, val, tl_lanes[0], tl_lanes[1], tl_lanes[2], tl_lanes[3]);
|
||
trbl =
|
||
ac_build_quad_swizzle(ctx, val, trbl_lanes[0], trbl_lanes[1], trbl_lanes[2], trbl_lanes[3]);
|
||
|
||
if (result_type == ctx->f16) {
|
||
tl = LLVMBuildTrunc(ctx->builder, tl, ctx->i16, "");
|
||
trbl = LLVMBuildTrunc(ctx->builder, trbl, ctx->i16, "");
|
||
}
|
||
|
||
tl = LLVMBuildBitCast(ctx->builder, tl, result_type, "");
|
||
trbl = LLVMBuildBitCast(ctx->builder, trbl, result_type, "");
|
||
result = LLVMBuildFSub(ctx->builder, trbl, tl, "");
|
||
|
||
ac_build_type_name_for_intr(result_type, type, sizeof(type));
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.wqm.%s", type);
|
||
|
||
return ac_build_intrinsic(ctx, name, result_type, &result, 1, 0);
|
||
}
|
||
|
||
void ac_build_sendmsg(struct ac_llvm_context *ctx, uint32_t msg, LLVMValueRef wave_id)
|
||
{
|
||
LLVMValueRef args[2];
|
||
args[0] = LLVMConstInt(ctx->i32, msg, false);
|
||
args[1] = wave_id;
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.s.sendmsg", ctx->voidt, args, 2, 0);
|
||
}
|
||
|
||
LLVMValueRef ac_build_imsb(struct ac_llvm_context *ctx, LLVMValueRef arg, LLVMTypeRef dst_type)
|
||
{
|
||
LLVMValueRef msb =
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.sffbh.i32", dst_type, &arg, 1, AC_FUNC_ATTR_READNONE);
|
||
|
||
/* The HW returns the last bit index from MSB, but NIR/TGSI wants
|
||
* the index from LSB. Invert it by doing "31 - msb". */
|
||
msb = LLVMBuildSub(ctx->builder, LLVMConstInt(ctx->i32, 31, false), msb, "");
|
||
|
||
LLVMValueRef all_ones = LLVMConstInt(ctx->i32, -1, true);
|
||
LLVMValueRef cond =
|
||
LLVMBuildOr(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntEQ, arg, ctx->i32_0, ""),
|
||
LLVMBuildICmp(ctx->builder, LLVMIntEQ, arg, all_ones, ""), "");
|
||
|
||
return LLVMBuildSelect(ctx->builder, cond, all_ones, msb, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_umsb(struct ac_llvm_context *ctx, LLVMValueRef arg, LLVMTypeRef dst_type)
|
||
{
|
||
const char *intrin_name;
|
||
LLVMTypeRef type;
|
||
LLVMValueRef highest_bit;
|
||
LLVMValueRef zero;
|
||
unsigned bitsize;
|
||
|
||
bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(arg));
|
||
switch (bitsize) {
|
||
case 64:
|
||
intrin_name = "llvm.ctlz.i64";
|
||
type = ctx->i64;
|
||
highest_bit = LLVMConstInt(ctx->i64, 63, false);
|
||
zero = ctx->i64_0;
|
||
break;
|
||
case 32:
|
||
intrin_name = "llvm.ctlz.i32";
|
||
type = ctx->i32;
|
||
highest_bit = LLVMConstInt(ctx->i32, 31, false);
|
||
zero = ctx->i32_0;
|
||
break;
|
||
case 16:
|
||
intrin_name = "llvm.ctlz.i16";
|
||
type = ctx->i16;
|
||
highest_bit = LLVMConstInt(ctx->i16, 15, false);
|
||
zero = ctx->i16_0;
|
||
break;
|
||
case 8:
|
||
intrin_name = "llvm.ctlz.i8";
|
||
type = ctx->i8;
|
||
highest_bit = LLVMConstInt(ctx->i8, 7, false);
|
||
zero = ctx->i8_0;
|
||
break;
|
||
default:
|
||
unreachable(!"invalid bitsize");
|
||
break;
|
||
}
|
||
|
||
LLVMValueRef params[2] = {
|
||
arg,
|
||
ctx->i1true,
|
||
};
|
||
|
||
LLVMValueRef msb = ac_build_intrinsic(ctx, intrin_name, type, params, 2, AC_FUNC_ATTR_READNONE);
|
||
|
||
/* The HW returns the last bit index from MSB, but TGSI/NIR wants
|
||
* the index from LSB. Invert it by doing "31 - msb". */
|
||
msb = LLVMBuildSub(ctx->builder, highest_bit, msb, "");
|
||
|
||
if (bitsize == 64) {
|
||
msb = LLVMBuildTrunc(ctx->builder, msb, ctx->i32, "");
|
||
} else if (bitsize < 32) {
|
||
msb = LLVMBuildSExt(ctx->builder, msb, ctx->i32, "");
|
||
}
|
||
|
||
/* check for zero */
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntEQ, arg, zero, ""),
|
||
LLVMConstInt(ctx->i32, -1, true), msb, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_fmin(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
char name[64], type[64];
|
||
|
||
ac_build_type_name_for_intr(LLVMTypeOf(a), type, sizeof(type));
|
||
snprintf(name, sizeof(name), "llvm.minnum.%s", type);
|
||
LLVMValueRef args[2] = {a, b};
|
||
return ac_build_intrinsic(ctx, name, LLVMTypeOf(a), args, 2, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_fmax(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
char name[64], type[64];
|
||
|
||
ac_build_type_name_for_intr(LLVMTypeOf(a), type, sizeof(type));
|
||
snprintf(name, sizeof(name), "llvm.maxnum.%s", type);
|
||
LLVMValueRef args[2] = {a, b};
|
||
return ac_build_intrinsic(ctx, name, LLVMTypeOf(a), args, 2, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_imin(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSLE, a, b, "");
|
||
return LLVMBuildSelect(ctx->builder, cmp, a, b, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_imax(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntSGT, a, b, "");
|
||
return LLVMBuildSelect(ctx->builder, cmp, a, b, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_umin(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntULE, a, b, "");
|
||
return LLVMBuildSelect(ctx->builder, cmp, a, b, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_umax(struct ac_llvm_context *ctx, LLVMValueRef a, LLVMValueRef b)
|
||
{
|
||
LLVMValueRef cmp = LLVMBuildICmp(ctx->builder, LLVMIntUGE, a, b, "");
|
||
return LLVMBuildSelect(ctx->builder, cmp, a, b, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_clamp(struct ac_llvm_context *ctx, LLVMValueRef value)
|
||
{
|
||
LLVMTypeRef t = LLVMTypeOf(value);
|
||
return ac_build_fmin(ctx, ac_build_fmax(ctx, value, LLVMConstReal(t, 0.0)),
|
||
LLVMConstReal(t, 1.0));
|
||
}
|
||
|
||
void ac_build_export(struct ac_llvm_context *ctx, struct ac_export_args *a)
|
||
{
|
||
LLVMValueRef args[9];
|
||
|
||
args[0] = LLVMConstInt(ctx->i32, a->target, 0);
|
||
args[1] = LLVMConstInt(ctx->i32, a->enabled_channels, 0);
|
||
|
||
if (a->compr) {
|
||
assert(ctx->gfx_level < GFX11);
|
||
|
||
args[2] = LLVMBuildBitCast(ctx->builder, a->out[0], ctx->v2i16, "");
|
||
args[3] = LLVMBuildBitCast(ctx->builder, a->out[1], ctx->v2i16, "");
|
||
args[4] = LLVMConstInt(ctx->i1, a->done, 0);
|
||
args[5] = LLVMConstInt(ctx->i1, a->valid_mask, 0);
|
||
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.exp.compr.v2i16", ctx->voidt, args, 6, 0);
|
||
} else {
|
||
args[2] = LLVMBuildBitCast(ctx->builder, a->out[0], ctx->f32, "");
|
||
args[3] = LLVMBuildBitCast(ctx->builder, a->out[1], ctx->f32, "");
|
||
args[4] = LLVMBuildBitCast(ctx->builder, a->out[2], ctx->f32, "");
|
||
args[5] = LLVMBuildBitCast(ctx->builder, a->out[3], ctx->f32, "");
|
||
args[6] = LLVMConstInt(ctx->i1, a->done, 0);
|
||
args[7] = LLVMConstInt(ctx->i1, a->valid_mask, 0);
|
||
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.exp.f32", ctx->voidt, args, 8, 0);
|
||
}
|
||
}
|
||
|
||
void ac_build_export_null(struct ac_llvm_context *ctx, bool uses_discard)
|
||
{
|
||
struct ac_export_args args;
|
||
|
||
/* Gfx10+ doesn't need to export anything if we don't need to export the EXEC mask
|
||
* for discard.
|
||
*/
|
||
if (ctx->gfx_level >= GFX10 && !uses_discard)
|
||
return;
|
||
|
||
args.enabled_channels = 0x0; /* enabled channels */
|
||
args.valid_mask = 1; /* whether the EXEC mask is valid */
|
||
args.done = 1; /* DONE bit */
|
||
/* Gfx11 doesn't support null exports, and mrt0 should be exported instead. */
|
||
args.target = ctx->gfx_level >= GFX11 ? V_008DFC_SQ_EXP_MRT : V_008DFC_SQ_EXP_NULL;
|
||
args.compr = 0; /* COMPR flag (0 = 32-bit export) */
|
||
args.out[0] = LLVMGetUndef(ctx->f32); /* R */
|
||
args.out[1] = LLVMGetUndef(ctx->f32); /* G */
|
||
args.out[2] = LLVMGetUndef(ctx->f32); /* B */
|
||
args.out[3] = LLVMGetUndef(ctx->f32); /* A */
|
||
|
||
ac_build_export(ctx, &args);
|
||
}
|
||
|
||
static unsigned ac_num_coords(enum ac_image_dim dim)
|
||
{
|
||
switch (dim) {
|
||
case ac_image_1d:
|
||
return 1;
|
||
case ac_image_2d:
|
||
case ac_image_1darray:
|
||
return 2;
|
||
case ac_image_3d:
|
||
case ac_image_cube:
|
||
case ac_image_2darray:
|
||
case ac_image_2dmsaa:
|
||
return 3;
|
||
case ac_image_2darraymsaa:
|
||
return 4;
|
||
default:
|
||
unreachable("ac_num_coords: bad dim");
|
||
}
|
||
}
|
||
|
||
static unsigned ac_num_derivs(enum ac_image_dim dim)
|
||
{
|
||
switch (dim) {
|
||
case ac_image_1d:
|
||
case ac_image_1darray:
|
||
return 2;
|
||
case ac_image_2d:
|
||
case ac_image_2darray:
|
||
case ac_image_cube:
|
||
return 4;
|
||
case ac_image_3d:
|
||
return 6;
|
||
case ac_image_2dmsaa:
|
||
case ac_image_2darraymsaa:
|
||
default:
|
||
unreachable("derivatives not supported");
|
||
}
|
||
}
|
||
|
||
static const char *get_atomic_name(enum ac_atomic_op op)
|
||
{
|
||
switch (op) {
|
||
case ac_atomic_swap:
|
||
return "swap";
|
||
case ac_atomic_add:
|
||
return "add";
|
||
case ac_atomic_sub:
|
||
return "sub";
|
||
case ac_atomic_smin:
|
||
return "smin";
|
||
case ac_atomic_umin:
|
||
return "umin";
|
||
case ac_atomic_smax:
|
||
return "smax";
|
||
case ac_atomic_umax:
|
||
return "umax";
|
||
case ac_atomic_and:
|
||
return "and";
|
||
case ac_atomic_or:
|
||
return "or";
|
||
case ac_atomic_xor:
|
||
return "xor";
|
||
case ac_atomic_inc_wrap:
|
||
return "inc";
|
||
case ac_atomic_dec_wrap:
|
||
return "dec";
|
||
case ac_atomic_fmin:
|
||
return "fmin";
|
||
case ac_atomic_fmax:
|
||
return "fmax";
|
||
}
|
||
unreachable("bad atomic op");
|
||
}
|
||
|
||
LLVMValueRef ac_build_image_opcode(struct ac_llvm_context *ctx, struct ac_image_args *a)
|
||
{
|
||
const char *overload[3] = {"", "", ""};
|
||
unsigned num_overloads = 0;
|
||
LLVMValueRef args[18];
|
||
unsigned num_args = 0;
|
||
enum ac_image_dim dim = a->dim;
|
||
|
||
assert(!a->lod || a->lod == ctx->i32_0 || a->lod == ctx->f32_0 || !a->level_zero);
|
||
assert((a->opcode != ac_image_get_resinfo && a->opcode != ac_image_load_mip &&
|
||
a->opcode != ac_image_store_mip) ||
|
||
a->lod);
|
||
assert(a->opcode == ac_image_sample || a->opcode == ac_image_gather4 ||
|
||
(!a->compare && !a->offset));
|
||
assert((a->opcode == ac_image_sample || a->opcode == ac_image_gather4 ||
|
||
a->opcode == ac_image_get_lod) ||
|
||
!a->bias);
|
||
assert((a->bias ? 1 : 0) + (a->lod ? 1 : 0) + (a->level_zero ? 1 : 0) + (a->derivs[0] ? 1 : 0) <=
|
||
1);
|
||
assert((a->min_lod ? 1 : 0) + (a->lod ? 1 : 0) + (a->level_zero ? 1 : 0) <= 1);
|
||
assert(!a->d16 || (ctx->gfx_level >= GFX8 && a->opcode != ac_image_atomic &&
|
||
a->opcode != ac_image_atomic_cmpswap && a->opcode != ac_image_get_lod &&
|
||
a->opcode != ac_image_get_resinfo));
|
||
assert(!a->a16 || ctx->gfx_level >= GFX9);
|
||
assert(a->g16 == a->a16 || ctx->gfx_level >= GFX10);
|
||
|
||
assert(!a->offset ||
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->offset)) == 32);
|
||
assert(!a->bias ||
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->bias)) == 32);
|
||
assert(!a->compare ||
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->compare)) == 32);
|
||
assert(!a->derivs[0] ||
|
||
((!a->g16 || ac_get_elem_bits(ctx, LLVMTypeOf(a->derivs[0])) == 16) &&
|
||
(a->g16 || ac_get_elem_bits(ctx, LLVMTypeOf(a->derivs[0])) == 32)));
|
||
assert(!a->coords[0] ||
|
||
((!a->a16 || ac_get_elem_bits(ctx, LLVMTypeOf(a->coords[0])) == 16) &&
|
||
(a->a16 || ac_get_elem_bits(ctx, LLVMTypeOf(a->coords[0])) == 32)));
|
||
assert(!a->lod ||
|
||
((a->opcode != ac_image_get_resinfo || ac_get_elem_bits(ctx, LLVMTypeOf(a->lod))) &&
|
||
(a->opcode == ac_image_get_resinfo ||
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->lod)) ==
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->coords[0])))));
|
||
assert(!a->min_lod ||
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->min_lod)) ==
|
||
ac_get_elem_bits(ctx, LLVMTypeOf(a->coords[0])));
|
||
|
||
if (a->opcode == ac_image_get_lod) {
|
||
switch (dim) {
|
||
case ac_image_1darray:
|
||
dim = ac_image_1d;
|
||
break;
|
||
case ac_image_2darray:
|
||
case ac_image_cube:
|
||
dim = ac_image_2d;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
bool sample = a->opcode == ac_image_sample || a->opcode == ac_image_gather4 ||
|
||
a->opcode == ac_image_get_lod;
|
||
bool atomic = a->opcode == ac_image_atomic || a->opcode == ac_image_atomic_cmpswap;
|
||
bool load = a->opcode == ac_image_sample || a->opcode == ac_image_gather4 ||
|
||
a->opcode == ac_image_load || a->opcode == ac_image_load_mip;
|
||
LLVMTypeRef coord_type = sample ? (a->a16 ? ctx->f16 : ctx->f32) : (a->a16 ? ctx->i16 : ctx->i32);
|
||
uint8_t dmask = a->dmask;
|
||
LLVMTypeRef data_type;
|
||
char data_type_str[32];
|
||
|
||
if (atomic) {
|
||
data_type = LLVMTypeOf(a->data[0]);
|
||
} else if (a->opcode == ac_image_store || a->opcode == ac_image_store_mip) {
|
||
/* Image stores might have been shrinked using the format. */
|
||
data_type = LLVMTypeOf(a->data[0]);
|
||
dmask = (1 << ac_get_llvm_num_components(a->data[0])) - 1;
|
||
} else {
|
||
data_type = a->d16 ? ctx->v4f16 : ctx->v4f32;
|
||
}
|
||
|
||
if (a->tfe) {
|
||
data_type = LLVMStructTypeInContext(
|
||
ctx->context, (LLVMTypeRef[]){data_type, ctx->i32}, 2, false);
|
||
}
|
||
|
||
if (atomic || a->opcode == ac_image_store || a->opcode == ac_image_store_mip) {
|
||
args[num_args++] = a->data[0];
|
||
if (a->opcode == ac_image_atomic_cmpswap)
|
||
args[num_args++] = a->data[1];
|
||
}
|
||
|
||
if (!atomic)
|
||
args[num_args++] = LLVMConstInt(ctx->i32, dmask, false);
|
||
|
||
if (a->offset)
|
||
args[num_args++] = ac_to_integer(ctx, a->offset);
|
||
if (a->bias) {
|
||
args[num_args++] = ac_to_float(ctx, a->bias);
|
||
overload[num_overloads++] = ".f32";
|
||
}
|
||
if (a->compare)
|
||
args[num_args++] = ac_to_float(ctx, a->compare);
|
||
if (a->derivs[0]) {
|
||
unsigned count = ac_num_derivs(dim);
|
||
for (unsigned i = 0; i < count; ++i)
|
||
args[num_args++] = ac_to_float(ctx, a->derivs[i]);
|
||
overload[num_overloads++] = a->g16 ? ".f16" : ".f32";
|
||
}
|
||
unsigned num_coords = a->opcode != ac_image_get_resinfo ? ac_num_coords(dim) : 0;
|
||
for (unsigned i = 0; i < num_coords; ++i)
|
||
args[num_args++] = LLVMBuildBitCast(ctx->builder, a->coords[i], coord_type, "");
|
||
if (a->lod)
|
||
args[num_args++] = LLVMBuildBitCast(ctx->builder, a->lod, coord_type, "");
|
||
if (a->min_lod)
|
||
args[num_args++] = LLVMBuildBitCast(ctx->builder, a->min_lod, coord_type, "");
|
||
|
||
overload[num_overloads++] = sample ? (a->a16 ? ".f16" : ".f32") : (a->a16 ? ".i16" : ".i32");
|
||
|
||
args[num_args++] = a->resource;
|
||
if (sample) {
|
||
args[num_args++] = a->sampler;
|
||
args[num_args++] = LLVMConstInt(ctx->i1, a->unorm, false);
|
||
}
|
||
|
||
args[num_args++] = a->tfe ? ctx->i32_1 : ctx->i32_0; /* texfailctrl */
|
||
args[num_args++] = LLVMConstInt(
|
||
ctx->i32, load ? get_load_cache_policy(ctx, a->cache_policy) : a->cache_policy, false);
|
||
|
||
const char *name;
|
||
const char *atomic_subop = "";
|
||
switch (a->opcode) {
|
||
case ac_image_sample:
|
||
name = "sample";
|
||
break;
|
||
case ac_image_gather4:
|
||
name = "gather4";
|
||
break;
|
||
case ac_image_load:
|
||
name = "load";
|
||
break;
|
||
case ac_image_load_mip:
|
||
name = "load.mip";
|
||
break;
|
||
case ac_image_store:
|
||
name = "store";
|
||
break;
|
||
case ac_image_store_mip:
|
||
name = "store.mip";
|
||
break;
|
||
case ac_image_atomic:
|
||
name = "atomic.";
|
||
atomic_subop = get_atomic_name(a->atomic);
|
||
break;
|
||
case ac_image_atomic_cmpswap:
|
||
name = "atomic.";
|
||
atomic_subop = "cmpswap";
|
||
break;
|
||
case ac_image_get_lod:
|
||
name = "getlod";
|
||
break;
|
||
case ac_image_get_resinfo:
|
||
name = "getresinfo";
|
||
break;
|
||
default:
|
||
unreachable("invalid image opcode");
|
||
}
|
||
|
||
const char *dimname;
|
||
switch (dim) {
|
||
case ac_image_1d:
|
||
dimname = "1d";
|
||
break;
|
||
case ac_image_2d:
|
||
dimname = "2d";
|
||
break;
|
||
case ac_image_3d:
|
||
dimname = "3d";
|
||
break;
|
||
case ac_image_cube:
|
||
dimname = "cube";
|
||
break;
|
||
case ac_image_1darray:
|
||
dimname = "1darray";
|
||
break;
|
||
case ac_image_2darray:
|
||
dimname = "2darray";
|
||
break;
|
||
case ac_image_2dmsaa:
|
||
dimname = "2dmsaa";
|
||
break;
|
||
case ac_image_2darraymsaa:
|
||
dimname = "2darraymsaa";
|
||
break;
|
||
default:
|
||
unreachable("invalid dim");
|
||
}
|
||
|
||
ac_build_type_name_for_intr(data_type, data_type_str, sizeof(data_type_str));
|
||
|
||
bool lod_suffix = a->lod && (a->opcode == ac_image_sample || a->opcode == ac_image_gather4);
|
||
char intr_name[96];
|
||
snprintf(intr_name, sizeof(intr_name),
|
||
"llvm.amdgcn.image.%s%s" /* base name */
|
||
"%s%s%s%s" /* sample/gather modifiers */
|
||
".%s.%s%s%s%s", /* dimension and type overloads */
|
||
name, atomic_subop, a->compare ? ".c" : "",
|
||
a->bias ? ".b" : lod_suffix ? ".l" : a->derivs[0] ? ".d" : a->level_zero ? ".lz" : "",
|
||
a->min_lod ? ".cl" : "", a->offset ? ".o" : "", dimname,
|
||
data_type_str, overload[0], overload[1], overload[2]);
|
||
|
||
LLVMTypeRef retty;
|
||
if (a->opcode == ac_image_store || a->opcode == ac_image_store_mip)
|
||
retty = ctx->voidt;
|
||
else
|
||
retty = data_type;
|
||
|
||
LLVMValueRef result = ac_build_intrinsic(ctx, intr_name, retty, args, num_args, a->attributes);
|
||
if (a->tfe) {
|
||
LLVMValueRef texel = LLVMBuildExtractValue(ctx->builder, result, 0, "");
|
||
LLVMValueRef code = LLVMBuildExtractValue(ctx->builder, result, 1, "");
|
||
result = ac_build_concat(ctx, texel, ac_to_float(ctx, code));
|
||
}
|
||
|
||
if (!sample && !atomic && retty != ctx->voidt)
|
||
result = ac_to_integer(ctx, result);
|
||
|
||
return result;
|
||
}
|
||
|
||
LLVMValueRef ac_build_image_get_sample_count(struct ac_llvm_context *ctx, LLVMValueRef rsrc)
|
||
{
|
||
LLVMValueRef samples;
|
||
|
||
/* Read the samples from the descriptor directly.
|
||
* Hardware doesn't have any instruction for this.
|
||
*/
|
||
samples = LLVMBuildExtractElement(ctx->builder, rsrc, LLVMConstInt(ctx->i32, 3, 0), "");
|
||
samples = LLVMBuildLShr(ctx->builder, samples, LLVMConstInt(ctx->i32, 16, 0), "");
|
||
samples = LLVMBuildAnd(ctx->builder, samples, LLVMConstInt(ctx->i32, 0xf, 0), "");
|
||
samples = LLVMBuildShl(ctx->builder, ctx->i32_1, samples, "");
|
||
return samples;
|
||
}
|
||
|
||
LLVMValueRef ac_build_cvt_pkrtz_f16(struct ac_llvm_context *ctx, LLVMValueRef args[2])
|
||
{
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pkrtz", ctx->v2f16, args, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_cvt_pknorm_i16(struct ac_llvm_context *ctx, LLVMValueRef args[2])
|
||
{
|
||
LLVMValueRef res = ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.i16", ctx->v2i16, args, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
return LLVMBuildBitCast(ctx->builder, res, ctx->i32, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_cvt_pknorm_u16(struct ac_llvm_context *ctx, LLVMValueRef args[2])
|
||
{
|
||
LLVMValueRef res = ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pknorm.u16", ctx->v2i16, args, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
return LLVMBuildBitCast(ctx->builder, res, ctx->i32, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_cvt_pknorm_i16_f16(struct ac_llvm_context *ctx,
|
||
LLVMValueRef args[2])
|
||
{
|
||
LLVMTypeRef param_types[] = {ctx->f16, ctx->f16};
|
||
LLVMTypeRef calltype = LLVMFunctionType(ctx->i32, param_types, 2, false);
|
||
LLVMValueRef code = LLVMConstInlineAsm(calltype,
|
||
ctx->gfx_level >= GFX11 ?
|
||
"v_cvt_pk_norm_i16_f16 $0, $1, $2" :
|
||
"v_cvt_pknorm_i16_f16 $0, $1, $2",
|
||
"=v,v,v", false, false);
|
||
return LLVMBuildCall2(ctx->builder, calltype, code, args, 2, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_cvt_pknorm_u16_f16(struct ac_llvm_context *ctx,
|
||
LLVMValueRef args[2])
|
||
{
|
||
LLVMTypeRef param_types[] = {ctx->f16, ctx->f16};
|
||
LLVMTypeRef calltype = LLVMFunctionType(ctx->i32, param_types, 2, false);
|
||
LLVMValueRef code = LLVMConstInlineAsm(calltype,
|
||
ctx->gfx_level >= GFX11 ?
|
||
"v_cvt_pk_norm_u16_f16 $0, $1, $2" :
|
||
"v_cvt_pknorm_u16_f16 $0, $1, $2",
|
||
"=v,v,v", false, false);
|
||
return LLVMBuildCall2(ctx->builder, calltype, code, args, 2, "");
|
||
}
|
||
|
||
/* The 8-bit and 10-bit clamping is for HW workarounds. */
|
||
LLVMValueRef ac_build_cvt_pk_i16(struct ac_llvm_context *ctx, LLVMValueRef args[2], unsigned bits,
|
||
bool hi)
|
||
{
|
||
assert(bits == 8 || bits == 10 || bits == 16);
|
||
|
||
LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, bits == 8 ? 127 : bits == 10 ? 511 : 32767, 0);
|
||
LLVMValueRef min_rgb = LLVMConstInt(ctx->i32, bits == 8 ? -128 : bits == 10 ? -512 : -32768, 0);
|
||
LLVMValueRef max_alpha = bits != 10 ? max_rgb : ctx->i32_1;
|
||
LLVMValueRef min_alpha = bits != 10 ? min_rgb : LLVMConstInt(ctx->i32, -2, 0);
|
||
|
||
/* Clamp. */
|
||
if (bits != 16) {
|
||
for (int i = 0; i < 2; i++) {
|
||
bool alpha = hi && i == 1;
|
||
args[i] = ac_build_imin(ctx, args[i], alpha ? max_alpha : max_rgb);
|
||
args[i] = ac_build_imax(ctx, args[i], alpha ? min_alpha : min_rgb);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef res =
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.i16", ctx->v2i16, args, 2, AC_FUNC_ATTR_READNONE);
|
||
return LLVMBuildBitCast(ctx->builder, res, ctx->i32, "");
|
||
}
|
||
|
||
/* The 8-bit and 10-bit clamping is for HW workarounds. */
|
||
LLVMValueRef ac_build_cvt_pk_u16(struct ac_llvm_context *ctx, LLVMValueRef args[2], unsigned bits,
|
||
bool hi)
|
||
{
|
||
assert(bits == 8 || bits == 10 || bits == 16);
|
||
|
||
LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, bits == 8 ? 255 : bits == 10 ? 1023 : 65535, 0);
|
||
LLVMValueRef max_alpha = bits != 10 ? max_rgb : LLVMConstInt(ctx->i32, 3, 0);
|
||
|
||
/* Clamp. */
|
||
if (bits != 16) {
|
||
for (int i = 0; i < 2; i++) {
|
||
bool alpha = hi && i == 1;
|
||
args[i] = ac_build_umin(ctx, args[i], alpha ? max_alpha : max_rgb);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef res =
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.cvt.pk.u16", ctx->v2i16, args, 2, AC_FUNC_ATTR_READNONE);
|
||
return LLVMBuildBitCast(ctx->builder, res, ctx->i32, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_wqm_vote(struct ac_llvm_context *ctx, LLVMValueRef i1)
|
||
{
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.wqm.vote", ctx->i1, &i1, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
void ac_build_kill_if_false(struct ac_llvm_context *ctx, LLVMValueRef i1)
|
||
{
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.kill", ctx->voidt, &i1, 1, 0);
|
||
}
|
||
|
||
LLVMValueRef ac_build_bfe(struct ac_llvm_context *ctx, LLVMValueRef input, LLVMValueRef offset,
|
||
LLVMValueRef width, bool is_signed)
|
||
{
|
||
LLVMValueRef args[] = {
|
||
input,
|
||
offset,
|
||
width,
|
||
};
|
||
|
||
return ac_build_intrinsic(ctx, is_signed ? "llvm.amdgcn.sbfe.i32" : "llvm.amdgcn.ubfe.i32",
|
||
ctx->i32, args, 3, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_imad(struct ac_llvm_context *ctx, LLVMValueRef s0, LLVMValueRef s1,
|
||
LLVMValueRef s2)
|
||
{
|
||
return LLVMBuildAdd(ctx->builder, LLVMBuildMul(ctx->builder, s0, s1, ""), s2, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_fmad(struct ac_llvm_context *ctx, LLVMValueRef s0, LLVMValueRef s1,
|
||
LLVMValueRef s2)
|
||
{
|
||
/* FMA is better on GFX10, because it has FMA units instead of MUL-ADD units. */
|
||
if (ctx->gfx_level >= GFX10) {
|
||
return ac_build_intrinsic(ctx, "llvm.fma.f32", ctx->f32, (LLVMValueRef[]){s0, s1, s2}, 3,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
return LLVMBuildFAdd(ctx->builder, LLVMBuildFMul(ctx->builder, s0, s1, ""), s2, "");
|
||
}
|
||
|
||
void ac_build_waitcnt(struct ac_llvm_context *ctx, unsigned wait_flags)
|
||
{
|
||
if (!wait_flags)
|
||
return;
|
||
|
||
unsigned expcnt = 7;
|
||
unsigned lgkmcnt = 63;
|
||
unsigned vmcnt = ctx->gfx_level >= GFX9 ? 63 : 15;
|
||
unsigned vscnt = 63;
|
||
|
||
if (wait_flags & AC_WAIT_EXP)
|
||
expcnt = 0;
|
||
if (wait_flags & AC_WAIT_LGKM)
|
||
lgkmcnt = 0;
|
||
if (wait_flags & AC_WAIT_VLOAD)
|
||
vmcnt = 0;
|
||
|
||
if (wait_flags & AC_WAIT_VSTORE) {
|
||
if (ctx->gfx_level >= GFX10)
|
||
vscnt = 0;
|
||
else
|
||
vmcnt = 0;
|
||
}
|
||
|
||
/* There is no intrinsic for vscnt(0), so use a fence. */
|
||
if ((wait_flags & AC_WAIT_LGKM && wait_flags & AC_WAIT_VLOAD && wait_flags & AC_WAIT_VSTORE) ||
|
||
vscnt == 0) {
|
||
assert(!(wait_flags & AC_WAIT_EXP));
|
||
LLVMBuildFence(ctx->builder, LLVMAtomicOrderingRelease, false, "");
|
||
return;
|
||
}
|
||
|
||
unsigned simm16;
|
||
|
||
if (ctx->gfx_level >= GFX11)
|
||
simm16 = expcnt | (lgkmcnt << 4) | (vmcnt << 10);
|
||
else
|
||
simm16 = (lgkmcnt << 8) | (expcnt << 4) | (vmcnt & 0xf) | ((vmcnt >> 4) << 14);
|
||
|
||
LLVMValueRef args[1] = {
|
||
LLVMConstInt(ctx->i32, simm16, false),
|
||
};
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.s.waitcnt", ctx->voidt, args, 1, 0);
|
||
}
|
||
|
||
LLVMValueRef ac_build_fsat(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMTypeRef type)
|
||
{
|
||
unsigned bitsize = ac_get_elem_bits(ctx, type);
|
||
LLVMValueRef zero = LLVMConstReal(type, 0.0);
|
||
LLVMValueRef one = LLVMConstReal(type, 1.0);
|
||
LLVMValueRef result;
|
||
|
||
if (bitsize == 64 || (bitsize == 16 && ctx->gfx_level <= GFX8) || type == ctx->v2f16) {
|
||
/* Use fmin/fmax for 64-bit fsat or 16-bit on GFX6-GFX8 because LLVM
|
||
* doesn't expose an intrinsic.
|
||
*/
|
||
result = ac_build_fmin(ctx, ac_build_fmax(ctx, src, zero), one);
|
||
} else {
|
||
LLVMTypeRef type;
|
||
char *intr;
|
||
|
||
if (bitsize == 16) {
|
||
intr = "llvm.amdgcn.fmed3.f16";
|
||
type = ctx->f16;
|
||
} else {
|
||
assert(bitsize == 32);
|
||
intr = "llvm.amdgcn.fmed3.f32";
|
||
type = ctx->f32;
|
||
}
|
||
|
||
LLVMValueRef params[] = {
|
||
zero,
|
||
one,
|
||
src,
|
||
};
|
||
|
||
result = ac_build_intrinsic(ctx, intr, type, params, 3,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
if (ctx->gfx_level < GFX9 && bitsize == 32) {
|
||
/* Only pre-GFX9 chips do not flush denorms. */
|
||
result = ac_build_canonicalize(ctx, result, bitsize);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
LLVMValueRef ac_build_fract(struct ac_llvm_context *ctx, LLVMValueRef src0, unsigned bitsize)
|
||
{
|
||
LLVMTypeRef type;
|
||
char *intr;
|
||
|
||
if (bitsize == 16) {
|
||
intr = "llvm.amdgcn.fract.f16";
|
||
type = ctx->f16;
|
||
} else if (bitsize == 32) {
|
||
intr = "llvm.amdgcn.fract.f32";
|
||
type = ctx->f32;
|
||
} else {
|
||
intr = "llvm.amdgcn.fract.f64";
|
||
type = ctx->f64;
|
||
}
|
||
|
||
LLVMValueRef params[] = {
|
||
src0,
|
||
};
|
||
return ac_build_intrinsic(ctx, intr, type, params, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_const_uint_vec(struct ac_llvm_context *ctx, LLVMTypeRef type, uint64_t value)
|
||
{
|
||
|
||
if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) {
|
||
LLVMValueRef scalar = LLVMConstInt(LLVMGetElementType(type), value, 0);
|
||
unsigned vec_size = LLVMGetVectorSize(type);
|
||
LLVMValueRef *scalars = alloca(vec_size * sizeof(LLVMValueRef));
|
||
|
||
for (unsigned i = 0; i < vec_size; i++)
|
||
scalars[i] = scalar;
|
||
return LLVMConstVector(scalars, vec_size);
|
||
}
|
||
return LLVMConstInt(type, value, 0);
|
||
}
|
||
|
||
LLVMValueRef ac_build_isign(struct ac_llvm_context *ctx, LLVMValueRef src0)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src0);
|
||
LLVMValueRef val;
|
||
|
||
/* v_med3 is selected only when max is first. (LLVM bug?) */
|
||
val = ac_build_imax(ctx, src0, ac_const_uint_vec(ctx, type, -1));
|
||
return ac_build_imin(ctx, val, ac_const_uint_vec(ctx, type, 1));
|
||
}
|
||
|
||
static LLVMValueRef ac_eliminate_negative_zero(struct ac_llvm_context *ctx, LLVMValueRef val)
|
||
{
|
||
ac_enable_signed_zeros(ctx);
|
||
/* (val + 0) converts negative zero to positive zero. */
|
||
val = LLVMBuildFAdd(ctx->builder, val, LLVMConstNull(LLVMTypeOf(val)), "");
|
||
ac_disable_signed_zeros(ctx);
|
||
return val;
|
||
}
|
||
|
||
LLVMValueRef ac_build_fsign(struct ac_llvm_context *ctx, LLVMValueRef src)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src);
|
||
LLVMValueRef pos, neg, dw[2], val;
|
||
unsigned bitsize = ac_get_elem_bits(ctx, type);
|
||
|
||
/* The standard version leads to this:
|
||
* v_cmp_ngt_f32_e64 s[0:1], s4, 0 ; D40B0000 00010004
|
||
* v_cndmask_b32_e64 v4, 1.0, s4, s[0:1] ; D5010004 000008F2
|
||
* v_cmp_le_f32_e32 vcc, 0, v4 ; 7C060880
|
||
* v_cndmask_b32_e32 v4, -1.0, v4, vcc ; 020808F3
|
||
*
|
||
* The isign version:
|
||
* v_add_f32_e64 v4, s4, 0 ; D5030004 00010004
|
||
* v_med3_i32 v4, v4, -1, 1 ; D5580004 02058304
|
||
* v_cvt_f32_i32_e32 v4, v4 ; 7E080B04
|
||
*
|
||
* (src0 + 0) converts negative zero to positive zero.
|
||
* After that, int(fsign(x)) == isign(floatBitsToInt(x)).
|
||
*
|
||
* For FP64, use the standard version, which doesn't suffer from the huge DP rate
|
||
* reduction. (FP64 comparisons are as fast as int64 comparisons)
|
||
*/
|
||
if (bitsize == 16 || bitsize == 32) {
|
||
val = ac_to_integer(ctx, ac_eliminate_negative_zero(ctx, src));
|
||
val = ac_build_isign(ctx, val);
|
||
return LLVMBuildSIToFP(ctx->builder, val, type, "");
|
||
}
|
||
|
||
assert(bitsize == 64);
|
||
pos = LLVMBuildFCmp(ctx->builder, LLVMRealOGT, src, ctx->f64_0, "");
|
||
neg = LLVMBuildFCmp(ctx->builder, LLVMRealOLT, src, ctx->f64_0, "");
|
||
dw[0] = ctx->i32_0;
|
||
dw[1] = LLVMBuildSelect(
|
||
ctx->builder, pos, LLVMConstInt(ctx->i32, 0x3FF00000, 0),
|
||
LLVMBuildSelect(ctx->builder, neg, LLVMConstInt(ctx->i32, 0xBFF00000, 0), ctx->i32_0, ""),
|
||
"");
|
||
return LLVMBuildBitCast(ctx->builder, ac_build_gather_values(ctx, dw, 2), ctx->f64, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_bit_count(struct ac_llvm_context *ctx, LLVMValueRef src0)
|
||
{
|
||
LLVMValueRef result;
|
||
unsigned bitsize;
|
||
|
||
bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0));
|
||
|
||
switch (bitsize) {
|
||
case 128:
|
||
result = ac_build_intrinsic(ctx, "llvm.ctpop.i128", ctx->i128, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
result = LLVMBuildTrunc(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
case 64:
|
||
result = ac_build_intrinsic(ctx, "llvm.ctpop.i64", ctx->i64, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildTrunc(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
case 32:
|
||
result = ac_build_intrinsic(ctx, "llvm.ctpop.i32", ctx->i32, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
break;
|
||
case 16:
|
||
result = ac_build_intrinsic(ctx, "llvm.ctpop.i16", ctx->i16, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
case 8:
|
||
result = ac_build_intrinsic(ctx, "llvm.ctpop.i8", ctx->i8, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
default:
|
||
unreachable(!"invalid bitsize");
|
||
break;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
LLVMValueRef ac_build_bitfield_reverse(struct ac_llvm_context *ctx, LLVMValueRef src0)
|
||
{
|
||
LLVMValueRef result;
|
||
unsigned bitsize;
|
||
|
||
bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0));
|
||
|
||
switch (bitsize) {
|
||
case 64:
|
||
result = ac_build_intrinsic(ctx, "llvm.bitreverse.i64", ctx->i64, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildTrunc(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
case 32:
|
||
result = ac_build_intrinsic(ctx, "llvm.bitreverse.i32", ctx->i32, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
break;
|
||
case 16:
|
||
result = ac_build_intrinsic(ctx, "llvm.bitreverse.i16", ctx->i16, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
case 8:
|
||
result = ac_build_intrinsic(ctx, "llvm.bitreverse.i8", ctx->i8, (LLVMValueRef[]){src0}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
result = LLVMBuildZExt(ctx->builder, result, ctx->i32, "");
|
||
break;
|
||
default:
|
||
unreachable(!"invalid bitsize");
|
||
break;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
void ac_init_exec_full_mask(struct ac_llvm_context *ctx)
|
||
{
|
||
LLVMValueRef full_mask = LLVMConstInt(ctx->i64, ~0ull, 0);
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.init.exec", ctx->voidt, &full_mask, 1,
|
||
AC_FUNC_ATTR_CONVERGENT);
|
||
}
|
||
|
||
void ac_declare_lds_as_pointer(struct ac_llvm_context *ctx)
|
||
{
|
||
unsigned lds_size = ctx->gfx_level >= GFX7 ? 65536 : 32768;
|
||
ctx->lds = LLVMBuildIntToPtr(
|
||
ctx->builder, ctx->i32_0,
|
||
LLVMPointerType(LLVMArrayType(ctx->i32, lds_size / 4), AC_ADDR_SPACE_LDS), "lds");
|
||
}
|
||
|
||
LLVMValueRef ac_lds_load(struct ac_llvm_context *ctx, LLVMValueRef dw_addr)
|
||
{
|
||
return LLVMBuildLoad2(ctx->builder, ctx->i32, ac_build_gep0(ctx, ctx->lds, dw_addr), "");
|
||
}
|
||
|
||
void ac_lds_store(struct ac_llvm_context *ctx, LLVMValueRef dw_addr, LLVMValueRef value)
|
||
{
|
||
value = ac_to_integer(ctx, value);
|
||
ac_build_indexed_store(ctx, ctx->lds, dw_addr, value);
|
||
}
|
||
|
||
LLVMValueRef ac_find_lsb(struct ac_llvm_context *ctx, LLVMTypeRef dst_type, LLVMValueRef src0)
|
||
{
|
||
unsigned src0_bitsize = ac_get_elem_bits(ctx, LLVMTypeOf(src0));
|
||
const char *intrin_name;
|
||
LLVMTypeRef type;
|
||
LLVMValueRef zero;
|
||
|
||
switch (src0_bitsize) {
|
||
case 64:
|
||
intrin_name = "llvm.cttz.i64";
|
||
type = ctx->i64;
|
||
zero = ctx->i64_0;
|
||
break;
|
||
case 32:
|
||
intrin_name = "llvm.cttz.i32";
|
||
type = ctx->i32;
|
||
zero = ctx->i32_0;
|
||
break;
|
||
case 16:
|
||
intrin_name = "llvm.cttz.i16";
|
||
type = ctx->i16;
|
||
zero = ctx->i16_0;
|
||
break;
|
||
case 8:
|
||
intrin_name = "llvm.cttz.i8";
|
||
type = ctx->i8;
|
||
zero = ctx->i8_0;
|
||
break;
|
||
default:
|
||
unreachable(!"invalid bitsize");
|
||
}
|
||
|
||
LLVMValueRef params[2] = {
|
||
src0,
|
||
|
||
/* The value of 1 means that ffs(x=0) = undef, so LLVM won't
|
||
* add special code to check for x=0. The reason is that
|
||
* the LLVM behavior for x=0 is different from what we
|
||
* need here. However, LLVM also assumes that ffs(x) is
|
||
* in [0, 31], but GLSL expects that ffs(0) = -1, so
|
||
* a conditional assignment to handle 0 is still required.
|
||
*
|
||
* The hardware already implements the correct behavior.
|
||
*/
|
||
ctx->i1true,
|
||
};
|
||
|
||
LLVMValueRef lsb = ac_build_intrinsic(ctx, intrin_name, type, params, 2, AC_FUNC_ATTR_READNONE);
|
||
|
||
if (src0_bitsize == 64) {
|
||
lsb = LLVMBuildTrunc(ctx->builder, lsb, ctx->i32, "");
|
||
} else if (src0_bitsize < 32) {
|
||
lsb = LLVMBuildSExt(ctx->builder, lsb, ctx->i32, "");
|
||
}
|
||
|
||
/* TODO: We need an intrinsic to skip this conditional. */
|
||
/* Check for zero: */
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntEQ, src0, zero, ""),
|
||
LLVMConstInt(ctx->i32, -1, 0), lsb, "");
|
||
}
|
||
|
||
LLVMTypeRef ac_array_in_const_addr_space(LLVMTypeRef elem_type)
|
||
{
|
||
return LLVMPointerType(elem_type, AC_ADDR_SPACE_CONST);
|
||
}
|
||
|
||
LLVMTypeRef ac_array_in_const32_addr_space(LLVMTypeRef elem_type)
|
||
{
|
||
return LLVMPointerType(elem_type, AC_ADDR_SPACE_CONST_32BIT);
|
||
}
|
||
|
||
static struct ac_llvm_flow *get_current_flow(struct ac_llvm_context *ctx)
|
||
{
|
||
if (ctx->flow->depth > 0)
|
||
return &ctx->flow->stack[ctx->flow->depth - 1];
|
||
return NULL;
|
||
}
|
||
|
||
static struct ac_llvm_flow *get_innermost_loop(struct ac_llvm_context *ctx)
|
||
{
|
||
for (unsigned i = ctx->flow->depth; i > 0; --i) {
|
||
if (ctx->flow->stack[i - 1].loop_entry_block)
|
||
return &ctx->flow->stack[i - 1];
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
static struct ac_llvm_flow *push_flow(struct ac_llvm_context *ctx)
|
||
{
|
||
struct ac_llvm_flow *flow;
|
||
|
||
if (ctx->flow->depth >= ctx->flow->depth_max) {
|
||
unsigned new_max = MAX2(ctx->flow->depth << 1, AC_LLVM_INITIAL_CF_DEPTH);
|
||
|
||
ctx->flow->stack = realloc(ctx->flow->stack, new_max * sizeof(*ctx->flow->stack));
|
||
ctx->flow->depth_max = new_max;
|
||
}
|
||
|
||
flow = &ctx->flow->stack[ctx->flow->depth];
|
||
ctx->flow->depth++;
|
||
|
||
flow->next_block = NULL;
|
||
flow->loop_entry_block = NULL;
|
||
return flow;
|
||
}
|
||
|
||
static void set_basicblock_name(LLVMBasicBlockRef bb, const char *base, int label_id)
|
||
{
|
||
char buf[32];
|
||
snprintf(buf, sizeof(buf), "%s%d", base, label_id);
|
||
LLVMSetValueName(LLVMBasicBlockAsValue(bb), buf);
|
||
}
|
||
|
||
/* Append a basic block at the level of the parent flow.
|
||
*/
|
||
static LLVMBasicBlockRef append_basic_block(struct ac_llvm_context *ctx, const char *name)
|
||
{
|
||
assert(ctx->flow->depth >= 1);
|
||
|
||
if (ctx->flow->depth >= 2) {
|
||
struct ac_llvm_flow *flow = &ctx->flow->stack[ctx->flow->depth - 2];
|
||
|
||
return LLVMInsertBasicBlockInContext(ctx->context, flow->next_block, name);
|
||
}
|
||
|
||
LLVMValueRef main_fn = LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->builder));
|
||
return LLVMAppendBasicBlockInContext(ctx->context, main_fn, name);
|
||
}
|
||
|
||
/* Emit a branch to the given default target for the current block if
|
||
* applicable -- that is, if the current block does not already contain a
|
||
* branch from a break or continue.
|
||
*/
|
||
static void emit_default_branch(LLVMBuilderRef builder, LLVMBasicBlockRef target)
|
||
{
|
||
if (!LLVMGetBasicBlockTerminator(LLVMGetInsertBlock(builder)))
|
||
LLVMBuildBr(builder, target);
|
||
}
|
||
|
||
void ac_build_bgnloop(struct ac_llvm_context *ctx, int label_id)
|
||
{
|
||
struct ac_llvm_flow *flow = push_flow(ctx);
|
||
flow->loop_entry_block = append_basic_block(ctx, "LOOP");
|
||
flow->next_block = append_basic_block(ctx, "ENDLOOP");
|
||
set_basicblock_name(flow->loop_entry_block, "loop", label_id);
|
||
LLVMBuildBr(ctx->builder, flow->loop_entry_block);
|
||
LLVMPositionBuilderAtEnd(ctx->builder, flow->loop_entry_block);
|
||
}
|
||
|
||
void ac_build_break(struct ac_llvm_context *ctx)
|
||
{
|
||
struct ac_llvm_flow *flow = get_innermost_loop(ctx);
|
||
LLVMBuildBr(ctx->builder, flow->next_block);
|
||
}
|
||
|
||
void ac_build_continue(struct ac_llvm_context *ctx)
|
||
{
|
||
struct ac_llvm_flow *flow = get_innermost_loop(ctx);
|
||
LLVMBuildBr(ctx->builder, flow->loop_entry_block);
|
||
}
|
||
|
||
void ac_build_else(struct ac_llvm_context *ctx, int label_id)
|
||
{
|
||
struct ac_llvm_flow *current_branch = get_current_flow(ctx);
|
||
LLVMBasicBlockRef endif_block;
|
||
|
||
assert(!current_branch->loop_entry_block);
|
||
|
||
endif_block = append_basic_block(ctx, "ENDIF");
|
||
emit_default_branch(ctx->builder, endif_block);
|
||
|
||
LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block);
|
||
set_basicblock_name(current_branch->next_block, "else", label_id);
|
||
|
||
current_branch->next_block = endif_block;
|
||
}
|
||
|
||
/* Invoked after a branch is exited. */
|
||
static void ac_branch_exited(struct ac_llvm_context *ctx)
|
||
{
|
||
if (ctx->flow->depth == 0 && ctx->conditional_demote_seen) {
|
||
/* The previous conditional branch contained demote. Kill threads
|
||
* after all conditional blocks because amdgcn.wqm.vote doesn't
|
||
* return usable values inside the blocks.
|
||
*
|
||
* This is an optional optimization that only kills whole inactive quads.
|
||
*/
|
||
LLVMValueRef cond = LLVMBuildLoad2(ctx->builder, ctx->i1, ctx->postponed_kill, "");
|
||
ac_build_kill_if_false(ctx, ac_build_wqm_vote(ctx, cond));
|
||
ctx->conditional_demote_seen = false;
|
||
}
|
||
}
|
||
|
||
void ac_build_endif(struct ac_llvm_context *ctx, int label_id)
|
||
{
|
||
struct ac_llvm_flow *current_branch = get_current_flow(ctx);
|
||
|
||
assert(!current_branch->loop_entry_block);
|
||
|
||
emit_default_branch(ctx->builder, current_branch->next_block);
|
||
LLVMPositionBuilderAtEnd(ctx->builder, current_branch->next_block);
|
||
set_basicblock_name(current_branch->next_block, "endif", label_id);
|
||
|
||
ctx->flow->depth--;
|
||
ac_branch_exited(ctx);
|
||
}
|
||
|
||
void ac_build_endloop(struct ac_llvm_context *ctx, int label_id)
|
||
{
|
||
struct ac_llvm_flow *current_loop = get_current_flow(ctx);
|
||
|
||
assert(current_loop->loop_entry_block);
|
||
|
||
emit_default_branch(ctx->builder, current_loop->loop_entry_block);
|
||
|
||
LLVMPositionBuilderAtEnd(ctx->builder, current_loop->next_block);
|
||
set_basicblock_name(current_loop->next_block, "endloop", label_id);
|
||
ctx->flow->depth--;
|
||
ac_branch_exited(ctx);
|
||
}
|
||
|
||
void ac_build_ifcc(struct ac_llvm_context *ctx, LLVMValueRef cond, int label_id)
|
||
{
|
||
struct ac_llvm_flow *flow = push_flow(ctx);
|
||
LLVMBasicBlockRef if_block;
|
||
|
||
if_block = append_basic_block(ctx, "IF");
|
||
flow->next_block = append_basic_block(ctx, "ELSE");
|
||
set_basicblock_name(if_block, "if", label_id);
|
||
LLVMBuildCondBr(ctx->builder, cond, if_block, flow->next_block);
|
||
LLVMPositionBuilderAtEnd(ctx->builder, if_block);
|
||
}
|
||
|
||
LLVMValueRef ac_build_alloca_undef(struct ac_llvm_context *ac, LLVMTypeRef type, const char *name)
|
||
{
|
||
LLVMBuilderRef builder = ac->builder;
|
||
LLVMBasicBlockRef current_block = LLVMGetInsertBlock(builder);
|
||
LLVMValueRef function = LLVMGetBasicBlockParent(current_block);
|
||
LLVMBasicBlockRef first_block = LLVMGetEntryBasicBlock(function);
|
||
LLVMValueRef first_instr = LLVMGetFirstInstruction(first_block);
|
||
LLVMBuilderRef first_builder = LLVMCreateBuilderInContext(ac->context);
|
||
LLVMValueRef res;
|
||
|
||
if (first_instr) {
|
||
LLVMPositionBuilderBefore(first_builder, first_instr);
|
||
} else {
|
||
LLVMPositionBuilderAtEnd(first_builder, first_block);
|
||
}
|
||
|
||
res = LLVMBuildAlloca(first_builder, type, name);
|
||
LLVMDisposeBuilder(first_builder);
|
||
return res;
|
||
}
|
||
|
||
LLVMValueRef ac_build_alloca(struct ac_llvm_context *ac, LLVMTypeRef type, const char *name)
|
||
{
|
||
LLVMValueRef ptr = ac_build_alloca_undef(ac, type, name);
|
||
LLVMBuildStore(ac->builder, LLVMConstNull(type), ptr);
|
||
return ptr;
|
||
}
|
||
|
||
LLVMValueRef ac_build_alloca_init(struct ac_llvm_context *ac, LLVMValueRef val, const char *name)
|
||
{
|
||
LLVMValueRef ptr = ac_build_alloca_undef(ac, LLVMTypeOf(val), name);
|
||
LLVMBuildStore(ac->builder, val, ptr);
|
||
return ptr;
|
||
}
|
||
|
||
LLVMValueRef ac_cast_ptr(struct ac_llvm_context *ctx, LLVMValueRef ptr, LLVMTypeRef type)
|
||
{
|
||
int addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr));
|
||
return LLVMBuildBitCast(ctx->builder, ptr, LLVMPointerType(type, addr_space), "");
|
||
}
|
||
|
||
LLVMValueRef ac_trim_vector(struct ac_llvm_context *ctx, LLVMValueRef value, unsigned count)
|
||
{
|
||
unsigned num_components = ac_get_llvm_num_components(value);
|
||
if (count == num_components)
|
||
return value;
|
||
|
||
LLVMValueRef *const masks = alloca(MAX2(count, 2) * sizeof(LLVMValueRef));
|
||
masks[0] = ctx->i32_0;
|
||
masks[1] = ctx->i32_1;
|
||
for (unsigned i = 2; i < count; i++)
|
||
masks[i] = LLVMConstInt(ctx->i32, i, false);
|
||
|
||
if (count == 1)
|
||
return LLVMBuildExtractElement(ctx->builder, value, masks[0], "");
|
||
|
||
LLVMValueRef swizzle = LLVMConstVector(masks, count);
|
||
return LLVMBuildShuffleVector(ctx->builder, value, value, swizzle, "");
|
||
}
|
||
|
||
/* If param is i64 and bitwidth <= 32, the return value will be i32. */
|
||
LLVMValueRef ac_unpack_param(struct ac_llvm_context *ctx, LLVMValueRef param, unsigned rshift,
|
||
unsigned bitwidth)
|
||
{
|
||
LLVMValueRef value = param;
|
||
if (rshift)
|
||
value = LLVMBuildLShr(ctx->builder, value, LLVMConstInt(LLVMTypeOf(param), rshift, false), "");
|
||
|
||
if (rshift + bitwidth < 32) {
|
||
uint64_t mask = (1ull << bitwidth) - 1;
|
||
value = LLVMBuildAnd(ctx->builder, value, LLVMConstInt(LLVMTypeOf(param), mask, false), "");
|
||
}
|
||
|
||
if (bitwidth <= 32 && LLVMTypeOf(param) == ctx->i64)
|
||
value = LLVMBuildTrunc(ctx->builder, value, ctx->i32, "");
|
||
return value;
|
||
}
|
||
|
||
/* Adjust the sample index according to FMASK.
|
||
*
|
||
* For uncompressed MSAA surfaces, FMASK should return 0x76543210,
|
||
* which is the identity mapping. Each nibble says which physical sample
|
||
* should be fetched to get that sample.
|
||
*
|
||
* For example, 0x11111100 means there are only 2 samples stored and
|
||
* the second sample covers 3/4 of the pixel. When reading samples 0
|
||
* and 1, return physical sample 0 (determined by the first two 0s
|
||
* in FMASK), otherwise return physical sample 1.
|
||
*
|
||
* The sample index should be adjusted as follows:
|
||
* addr[sample_index] = (fmask >> (addr[sample_index] * 4)) & 0xF;
|
||
*/
|
||
void ac_apply_fmask_to_sample(struct ac_llvm_context *ac, LLVMValueRef fmask, LLVMValueRef *addr,
|
||
bool is_array_tex)
|
||
{
|
||
struct ac_image_args fmask_load = {0};
|
||
fmask_load.opcode = ac_image_load;
|
||
fmask_load.resource = fmask;
|
||
fmask_load.dmask = 0xf;
|
||
fmask_load.dim = is_array_tex ? ac_image_2darray : ac_image_2d;
|
||
fmask_load.attributes = AC_FUNC_ATTR_READNONE;
|
||
|
||
fmask_load.coords[0] = addr[0];
|
||
fmask_load.coords[1] = addr[1];
|
||
if (is_array_tex)
|
||
fmask_load.coords[2] = addr[2];
|
||
fmask_load.a16 = ac_get_elem_bits(ac, LLVMTypeOf(addr[0])) == 16;
|
||
|
||
LLVMValueRef fmask_value = ac_build_image_opcode(ac, &fmask_load);
|
||
fmask_value = LLVMBuildExtractElement(ac->builder, fmask_value, ac->i32_0, "");
|
||
|
||
/* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK
|
||
* resource descriptor is 0 (invalid).
|
||
*/
|
||
LLVMValueRef tmp;
|
||
tmp = LLVMBuildBitCast(ac->builder, fmask, ac->v8i32, "");
|
||
tmp = LLVMBuildExtractElement(ac->builder, tmp, ac->i32_1, "");
|
||
tmp = LLVMBuildICmp(ac->builder, LLVMIntNE, tmp, ac->i32_0, "");
|
||
fmask_value =
|
||
LLVMBuildSelect(ac->builder, tmp, fmask_value, LLVMConstInt(ac->i32, 0x76543210, false), "");
|
||
|
||
/* Apply the formula. */
|
||
unsigned sample_chan = is_array_tex ? 3 : 2;
|
||
LLVMValueRef final_sample;
|
||
final_sample = LLVMBuildMul(ac->builder, addr[sample_chan],
|
||
LLVMConstInt(LLVMTypeOf(addr[0]), 4, 0), "");
|
||
final_sample = LLVMBuildLShr(ac->builder, fmask_value,
|
||
LLVMBuildZExt(ac->builder, final_sample, ac->i32, ""), "");
|
||
/* Mask the sample index by 0x7, because 0x8 means an unknown value
|
||
* with EQAA, so those will map to 0. */
|
||
addr[sample_chan] = LLVMBuildAnd(ac->builder, final_sample, LLVMConstInt(ac->i32, 0x7, 0), "");
|
||
if (fmask_load.a16)
|
||
addr[sample_chan] = LLVMBuildTrunc(ac->builder, final_sample, ac->i16, "");
|
||
}
|
||
|
||
static LLVMValueRef _ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMValueRef lane, bool with_opt_barrier)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src);
|
||
LLVMValueRef result;
|
||
|
||
if (with_opt_barrier)
|
||
ac_build_optimization_barrier(ctx, &src, false);
|
||
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
if (lane)
|
||
lane = LLVMBuildZExt(ctx->builder, lane, ctx->i32, "");
|
||
|
||
result =
|
||
ac_build_intrinsic(ctx, lane == NULL ? "llvm.amdgcn.readfirstlane" : "llvm.amdgcn.readlane",
|
||
ctx->i32, (LLVMValueRef[]){src, lane}, lane == NULL ? 1 : 2,
|
||
AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
return LLVMBuildTrunc(ctx->builder, result, type, "");
|
||
}
|
||
|
||
static LLVMValueRef ac_build_readlane_common(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMValueRef lane, bool with_opt_barrier)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
src = ac_to_integer(ctx, src);
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src));
|
||
LLVMValueRef ret;
|
||
|
||
if (bits > 32) {
|
||
assert(bits % 32 == 0);
|
||
LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32);
|
||
LLVMValueRef src_vector = LLVMBuildBitCast(ctx->builder, src, vec_type, "");
|
||
ret = LLVMGetUndef(vec_type);
|
||
for (unsigned i = 0; i < bits / 32; i++) {
|
||
LLVMValueRef ret_comp;
|
||
|
||
src = LLVMBuildExtractElement(ctx->builder, src_vector, LLVMConstInt(ctx->i32, i, 0), "");
|
||
|
||
ret_comp = _ac_build_readlane(ctx, src, lane, with_opt_barrier);
|
||
|
||
ret =
|
||
LLVMBuildInsertElement(ctx->builder, ret, ret_comp, LLVMConstInt(ctx->i32, i, 0), "");
|
||
}
|
||
} else {
|
||
ret = _ac_build_readlane(ctx, src, lane, with_opt_barrier);
|
||
}
|
||
|
||
if (LLVMGetTypeKind(src_type) == LLVMPointerTypeKind)
|
||
return LLVMBuildIntToPtr(ctx->builder, ret, src_type, "");
|
||
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
/**
|
||
* Builds the "llvm.amdgcn.readlane" or "llvm.amdgcn.readfirstlane" intrinsic.
|
||
*
|
||
* The optimization barrier is not needed if the value is the same in all lanes
|
||
* or if this is called in the outermost block.
|
||
*
|
||
* @param ctx
|
||
* @param src
|
||
* @param lane - id of the lane or NULL for the first active lane
|
||
* @return value of the lane
|
||
*/
|
||
LLVMValueRef ac_build_readlane_no_opt_barrier(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMValueRef lane)
|
||
{
|
||
return ac_build_readlane_common(ctx, src, lane, false);
|
||
}
|
||
|
||
LLVMValueRef ac_build_readlane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef lane)
|
||
{
|
||
return ac_build_readlane_common(ctx, src, lane, true);
|
||
}
|
||
|
||
LLVMValueRef ac_build_writelane(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef value,
|
||
LLVMValueRef lane)
|
||
{
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.writelane", ctx->i32,
|
||
(LLVMValueRef[]){value, lane, src}, 3,
|
||
AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
}
|
||
|
||
LLVMValueRef ac_build_mbcnt_add(struct ac_llvm_context *ctx, LLVMValueRef mask, LLVMValueRef add_src)
|
||
{
|
||
LLVMValueRef val;
|
||
|
||
if (ctx->wave_size == 32) {
|
||
val = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.lo", ctx->i32,
|
||
(LLVMValueRef[]){mask, ctx->i32_0}, 2, AC_FUNC_ATTR_READNONE);
|
||
} else {
|
||
LLVMValueRef mask_vec = LLVMBuildBitCast(ctx->builder, mask, ctx->v2i32, "");
|
||
LLVMValueRef mask_lo = LLVMBuildExtractElement(ctx->builder, mask_vec, ctx->i32_0, "");
|
||
LLVMValueRef mask_hi = LLVMBuildExtractElement(ctx->builder, mask_vec, ctx->i32_1, "");
|
||
val = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.lo", ctx->i32,
|
||
(LLVMValueRef[]){mask_lo, ctx->i32_0}, 2, AC_FUNC_ATTR_READNONE);
|
||
val = ac_build_intrinsic(ctx, "llvm.amdgcn.mbcnt.hi", ctx->i32, (LLVMValueRef[]){mask_hi, val},
|
||
2, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
/* Bug workaround. LLVM always believes the upper bound of mbcnt to be the wave size,
|
||
* regardless of ac_set_range_metadata. Use an extra add instruction to work around it.
|
||
*/
|
||
if (add_src != NULL && add_src != ctx->i32_0) {
|
||
return LLVMBuildAdd(ctx->builder, val, add_src, "");
|
||
}
|
||
|
||
return val;
|
||
}
|
||
|
||
LLVMValueRef ac_build_mbcnt(struct ac_llvm_context *ctx, LLVMValueRef mask)
|
||
{
|
||
return ac_build_mbcnt_add(ctx, mask, ctx->i32_0);
|
||
}
|
||
|
||
enum dpp_ctrl
|
||
{
|
||
_dpp_quad_perm = 0x000,
|
||
_dpp_row_sl = 0x100,
|
||
_dpp_row_sr = 0x110,
|
||
_dpp_row_rr = 0x120,
|
||
dpp_wf_sl1 = 0x130,
|
||
dpp_wf_rl1 = 0x134,
|
||
dpp_wf_sr1 = 0x138,
|
||
dpp_wf_rr1 = 0x13C,
|
||
dpp_row_mirror = 0x140,
|
||
dpp_row_half_mirror = 0x141,
|
||
dpp_row_bcast15 = 0x142,
|
||
dpp_row_bcast31 = 0x143
|
||
};
|
||
|
||
static inline enum dpp_ctrl dpp_quad_perm(unsigned lane0, unsigned lane1, unsigned lane2,
|
||
unsigned lane3)
|
||
{
|
||
assert(lane0 < 4 && lane1 < 4 && lane2 < 4 && lane3 < 4);
|
||
return _dpp_quad_perm | lane0 | (lane1 << 2) | (lane2 << 4) | (lane3 << 6);
|
||
}
|
||
|
||
static inline enum dpp_ctrl dpp_row_sr(unsigned amount)
|
||
{
|
||
assert(amount > 0 && amount < 16);
|
||
return _dpp_row_sr | amount;
|
||
}
|
||
|
||
static LLVMValueRef _ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src,
|
||
enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask,
|
||
bool bound_ctrl)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src);
|
||
LLVMValueRef res;
|
||
|
||
old = LLVMBuildZExt(ctx->builder, old, ctx->i32, "");
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
|
||
res = ac_build_intrinsic(
|
||
ctx, "llvm.amdgcn.update.dpp.i32", ctx->i32,
|
||
(LLVMValueRef[]){old, src, LLVMConstInt(ctx->i32, dpp_ctrl, 0),
|
||
LLVMConstInt(ctx->i32, row_mask, 0), LLVMConstInt(ctx->i32, bank_mask, 0),
|
||
LLVMConstInt(ctx->i1, bound_ctrl, 0)},
|
||
6, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
return LLVMBuildTrunc(ctx->builder, res, type, "");
|
||
}
|
||
|
||
static LLVMValueRef ac_build_dpp(struct ac_llvm_context *ctx, LLVMValueRef old, LLVMValueRef src,
|
||
enum dpp_ctrl dpp_ctrl, unsigned row_mask, unsigned bank_mask,
|
||
bool bound_ctrl)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
src = ac_to_integer(ctx, src);
|
||
old = ac_to_integer(ctx, old);
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src));
|
||
LLVMValueRef ret;
|
||
if (bits > 32) {
|
||
assert(bits % 32 == 0);
|
||
LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32);
|
||
LLVMValueRef src_vector = LLVMBuildBitCast(ctx->builder, src, vec_type, "");
|
||
LLVMValueRef old_vector = LLVMBuildBitCast(ctx->builder, old, vec_type, "");
|
||
ret = LLVMGetUndef(vec_type);
|
||
for (unsigned i = 0; i < bits / 32; i++) {
|
||
src = LLVMBuildExtractElement(ctx->builder, src_vector, LLVMConstInt(ctx->i32, i, 0), "");
|
||
old = LLVMBuildExtractElement(ctx->builder, old_vector, LLVMConstInt(ctx->i32, i, 0), "");
|
||
LLVMValueRef ret_comp =
|
||
_ac_build_dpp(ctx, old, src, dpp_ctrl, row_mask, bank_mask, bound_ctrl);
|
||
ret =
|
||
LLVMBuildInsertElement(ctx->builder, ret, ret_comp, LLVMConstInt(ctx->i32, i, 0), "");
|
||
}
|
||
} else {
|
||
ret = _ac_build_dpp(ctx, old, src, dpp_ctrl, row_mask, bank_mask, bound_ctrl);
|
||
}
|
||
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
static LLVMValueRef _ac_build_permlane16(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
uint64_t sel, bool exchange_rows, bool bound_ctrl)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src);
|
||
LLVMValueRef result;
|
||
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
|
||
LLVMValueRef args[6] = {
|
||
src,
|
||
src,
|
||
LLVMConstInt(ctx->i32, sel, false),
|
||
LLVMConstInt(ctx->i32, sel >> 32, false),
|
||
ctx->i1true, /* fi */
|
||
bound_ctrl ? ctx->i1true : ctx->i1false,
|
||
};
|
||
|
||
result =
|
||
ac_build_intrinsic(ctx, exchange_rows ? "llvm.amdgcn.permlanex16" : "llvm.amdgcn.permlane16",
|
||
ctx->i32, args, 6, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
return LLVMBuildTrunc(ctx->builder, result, type, "");
|
||
}
|
||
|
||
static LLVMValueRef ac_build_permlane16(struct ac_llvm_context *ctx, LLVMValueRef src, uint64_t sel,
|
||
bool exchange_rows, bool bound_ctrl)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
src = ac_to_integer(ctx, src);
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src));
|
||
LLVMValueRef ret;
|
||
if (bits > 32) {
|
||
assert(bits % 32 == 0);
|
||
LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32);
|
||
LLVMValueRef src_vector = LLVMBuildBitCast(ctx->builder, src, vec_type, "");
|
||
ret = LLVMGetUndef(vec_type);
|
||
for (unsigned i = 0; i < bits / 32; i++) {
|
||
src = LLVMBuildExtractElement(ctx->builder, src_vector, LLVMConstInt(ctx->i32, i, 0), "");
|
||
LLVMValueRef ret_comp = _ac_build_permlane16(ctx, src, sel, exchange_rows, bound_ctrl);
|
||
ret =
|
||
LLVMBuildInsertElement(ctx->builder, ret, ret_comp, LLVMConstInt(ctx->i32, i, 0), "");
|
||
}
|
||
} else {
|
||
ret = _ac_build_permlane16(ctx, src, sel, exchange_rows, bound_ctrl);
|
||
}
|
||
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
static inline unsigned ds_pattern_bitmode(unsigned and_mask, unsigned or_mask, unsigned xor_mask)
|
||
{
|
||
assert(and_mask < 32 && or_mask < 32 && xor_mask < 32);
|
||
return and_mask | (or_mask << 5) | (xor_mask << 10);
|
||
}
|
||
|
||
static LLVMValueRef _ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
unsigned mask)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
LLVMValueRef ret;
|
||
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
|
||
ret = ac_build_intrinsic(ctx, "llvm.amdgcn.ds.swizzle", ctx->i32,
|
||
(LLVMValueRef[]){src, LLVMConstInt(ctx->i32, mask, 0)}, 2,
|
||
AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
return LLVMBuildTrunc(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_ds_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned mask)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
src = ac_to_integer(ctx, src);
|
||
unsigned bits = LLVMGetIntTypeWidth(LLVMTypeOf(src));
|
||
LLVMValueRef ret;
|
||
if (bits > 32) {
|
||
assert(bits % 32 == 0);
|
||
LLVMTypeRef vec_type = LLVMVectorType(ctx->i32, bits / 32);
|
||
LLVMValueRef src_vector = LLVMBuildBitCast(ctx->builder, src, vec_type, "");
|
||
ret = LLVMGetUndef(vec_type);
|
||
for (unsigned i = 0; i < bits / 32; i++) {
|
||
src = LLVMBuildExtractElement(ctx->builder, src_vector, LLVMConstInt(ctx->i32, i, 0), "");
|
||
LLVMValueRef ret_comp = _ac_build_ds_swizzle(ctx, src, mask);
|
||
ret =
|
||
LLVMBuildInsertElement(ctx->builder, ret, ret_comp, LLVMConstInt(ctx->i32, i, 0), "");
|
||
}
|
||
} else {
|
||
ret = _ac_build_ds_swizzle(ctx, src, mask);
|
||
}
|
||
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
static LLVMValueRef ac_build_wwm(struct ac_llvm_context *ctx, LLVMValueRef src)
|
||
{
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
unsigned bitsize = ac_get_elem_bits(ctx, src_type);
|
||
char name[32], type[8];
|
||
LLVMValueRef ret;
|
||
|
||
src = ac_to_integer(ctx, src);
|
||
|
||
if (bitsize < 32)
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
|
||
ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type));
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.wwm.%s", type);
|
||
ret = ac_build_intrinsic(ctx, name, LLVMTypeOf(src), (LLVMValueRef[]){src}, 1,
|
||
AC_FUNC_ATTR_READNONE);
|
||
|
||
if (bitsize < 32)
|
||
ret = LLVMBuildTrunc(ctx->builder, ret, ac_to_integer_type(ctx, src_type), "");
|
||
|
||
return LLVMBuildBitCast(ctx->builder, ret, src_type, "");
|
||
}
|
||
|
||
static LLVMValueRef ac_build_set_inactive(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMValueRef inactive)
|
||
{
|
||
char name[33], type[8];
|
||
LLVMTypeRef src_type = LLVMTypeOf(src);
|
||
unsigned bitsize = ac_get_elem_bits(ctx, src_type);
|
||
src = ac_to_integer(ctx, src);
|
||
inactive = ac_to_integer(ctx, inactive);
|
||
|
||
if (bitsize < 32) {
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
inactive = LLVMBuildZExt(ctx->builder, inactive, ctx->i32, "");
|
||
}
|
||
|
||
ac_build_type_name_for_intr(LLVMTypeOf(src), type, sizeof(type));
|
||
snprintf(name, sizeof(name), "llvm.amdgcn.set.inactive.%s", type);
|
||
LLVMValueRef ret =
|
||
ac_build_intrinsic(ctx, name, LLVMTypeOf(src), (LLVMValueRef[]){src, inactive}, 2,
|
||
AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
if (bitsize < 32)
|
||
ret = LLVMBuildTrunc(ctx->builder, ret, src_type, "");
|
||
|
||
return ret;
|
||
}
|
||
|
||
static LLVMValueRef get_reduction_identity(struct ac_llvm_context *ctx, nir_op op,
|
||
unsigned type_size)
|
||
{
|
||
|
||
if (type_size == 0) {
|
||
switch (op) {
|
||
case nir_op_ior:
|
||
case nir_op_ixor:
|
||
return LLVMConstInt(ctx->i1, 0, 0);
|
||
case nir_op_iand:
|
||
return LLVMConstInt(ctx->i1, 1, 0);
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
} else if (type_size == 1) {
|
||
switch (op) {
|
||
case nir_op_iadd:
|
||
return ctx->i8_0;
|
||
case nir_op_imul:
|
||
return ctx->i8_1;
|
||
case nir_op_imin:
|
||
return LLVMConstInt(ctx->i8, INT8_MAX, 0);
|
||
case nir_op_umin:
|
||
return LLVMConstInt(ctx->i8, UINT8_MAX, 0);
|
||
case nir_op_imax:
|
||
return LLVMConstInt(ctx->i8, INT8_MIN, 0);
|
||
case nir_op_umax:
|
||
return ctx->i8_0;
|
||
case nir_op_iand:
|
||
return LLVMConstInt(ctx->i8, -1, 0);
|
||
case nir_op_ior:
|
||
return ctx->i8_0;
|
||
case nir_op_ixor:
|
||
return ctx->i8_0;
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
} else if (type_size == 2) {
|
||
switch (op) {
|
||
case nir_op_iadd:
|
||
return ctx->i16_0;
|
||
case nir_op_fadd:
|
||
return ctx->f16_0;
|
||
case nir_op_imul:
|
||
return ctx->i16_1;
|
||
case nir_op_fmul:
|
||
return ctx->f16_1;
|
||
case nir_op_imin:
|
||
return LLVMConstInt(ctx->i16, INT16_MAX, 0);
|
||
case nir_op_umin:
|
||
return LLVMConstInt(ctx->i16, UINT16_MAX, 0);
|
||
case nir_op_fmin:
|
||
return LLVMConstReal(ctx->f16, INFINITY);
|
||
case nir_op_imax:
|
||
return LLVMConstInt(ctx->i16, INT16_MIN, 0);
|
||
case nir_op_umax:
|
||
return ctx->i16_0;
|
||
case nir_op_fmax:
|
||
return LLVMConstReal(ctx->f16, -INFINITY);
|
||
case nir_op_iand:
|
||
return LLVMConstInt(ctx->i16, -1, 0);
|
||
case nir_op_ior:
|
||
return ctx->i16_0;
|
||
case nir_op_ixor:
|
||
return ctx->i16_0;
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
} else if (type_size == 4) {
|
||
switch (op) {
|
||
case nir_op_iadd:
|
||
return ctx->i32_0;
|
||
case nir_op_fadd:
|
||
return ctx->f32_0;
|
||
case nir_op_imul:
|
||
return ctx->i32_1;
|
||
case nir_op_fmul:
|
||
return ctx->f32_1;
|
||
case nir_op_imin:
|
||
return LLVMConstInt(ctx->i32, INT32_MAX, 0);
|
||
case nir_op_umin:
|
||
return LLVMConstInt(ctx->i32, UINT32_MAX, 0);
|
||
case nir_op_fmin:
|
||
return LLVMConstReal(ctx->f32, INFINITY);
|
||
case nir_op_imax:
|
||
return LLVMConstInt(ctx->i32, INT32_MIN, 0);
|
||
case nir_op_umax:
|
||
return ctx->i32_0;
|
||
case nir_op_fmax:
|
||
return LLVMConstReal(ctx->f32, -INFINITY);
|
||
case nir_op_iand:
|
||
return LLVMConstInt(ctx->i32, -1, 0);
|
||
case nir_op_ior:
|
||
return ctx->i32_0;
|
||
case nir_op_ixor:
|
||
return ctx->i32_0;
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
} else { /* type_size == 64bit */
|
||
switch (op) {
|
||
case nir_op_iadd:
|
||
return ctx->i64_0;
|
||
case nir_op_fadd:
|
||
return ctx->f64_0;
|
||
case nir_op_imul:
|
||
return ctx->i64_1;
|
||
case nir_op_fmul:
|
||
return ctx->f64_1;
|
||
case nir_op_imin:
|
||
return LLVMConstInt(ctx->i64, INT64_MAX, 0);
|
||
case nir_op_umin:
|
||
return LLVMConstInt(ctx->i64, UINT64_MAX, 0);
|
||
case nir_op_fmin:
|
||
return LLVMConstReal(ctx->f64, INFINITY);
|
||
case nir_op_imax:
|
||
return LLVMConstInt(ctx->i64, INT64_MIN, 0);
|
||
case nir_op_umax:
|
||
return ctx->i64_0;
|
||
case nir_op_fmax:
|
||
return LLVMConstReal(ctx->f64, -INFINITY);
|
||
case nir_op_iand:
|
||
return LLVMConstInt(ctx->i64, -1, 0);
|
||
case nir_op_ior:
|
||
return ctx->i64_0;
|
||
case nir_op_ixor:
|
||
return ctx->i64_0;
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
}
|
||
}
|
||
|
||
static LLVMValueRef ac_build_alu_op(struct ac_llvm_context *ctx, LLVMValueRef lhs, LLVMValueRef rhs,
|
||
nir_op op)
|
||
{
|
||
bool _64bit = ac_get_type_size(LLVMTypeOf(lhs)) == 8;
|
||
bool _32bit = ac_get_type_size(LLVMTypeOf(lhs)) == 4;
|
||
switch (op) {
|
||
case nir_op_iadd:
|
||
return LLVMBuildAdd(ctx->builder, lhs, rhs, "");
|
||
case nir_op_fadd:
|
||
return LLVMBuildFAdd(ctx->builder, lhs, rhs, "");
|
||
case nir_op_imul:
|
||
return LLVMBuildMul(ctx->builder, lhs, rhs, "");
|
||
case nir_op_fmul:
|
||
return LLVMBuildFMul(ctx->builder, lhs, rhs, "");
|
||
case nir_op_imin:
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntSLT, lhs, rhs, ""),
|
||
lhs, rhs, "");
|
||
case nir_op_umin:
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntULT, lhs, rhs, ""),
|
||
lhs, rhs, "");
|
||
case nir_op_fmin:
|
||
return ac_build_intrinsic(
|
||
ctx, _64bit ? "llvm.minnum.f64" : _32bit ? "llvm.minnum.f32" : "llvm.minnum.f16",
|
||
_64bit ? ctx->f64 : _32bit ? ctx->f32 : ctx->f16, (LLVMValueRef[]){lhs, rhs}, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
case nir_op_imax:
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntSGT, lhs, rhs, ""),
|
||
lhs, rhs, "");
|
||
case nir_op_umax:
|
||
return LLVMBuildSelect(ctx->builder, LLVMBuildICmp(ctx->builder, LLVMIntUGT, lhs, rhs, ""),
|
||
lhs, rhs, "");
|
||
case nir_op_fmax:
|
||
return ac_build_intrinsic(
|
||
ctx, _64bit ? "llvm.maxnum.f64" : _32bit ? "llvm.maxnum.f32" : "llvm.maxnum.f16",
|
||
_64bit ? ctx->f64 : _32bit ? ctx->f32 : ctx->f16, (LLVMValueRef[]){lhs, rhs}, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
case nir_op_iand:
|
||
return LLVMBuildAnd(ctx->builder, lhs, rhs, "");
|
||
case nir_op_ior:
|
||
return LLVMBuildOr(ctx->builder, lhs, rhs, "");
|
||
case nir_op_ixor:
|
||
return LLVMBuildXor(ctx->builder, lhs, rhs, "");
|
||
default:
|
||
unreachable("bad reduction intrinsic");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* \param src The value to shift.
|
||
* \param identity The value to use the first lane.
|
||
* \param maxprefix specifies that the result only needs to be correct for a
|
||
* prefix of this many threads
|
||
* \return src, shifted 1 lane up, and identity shifted into lane 0.
|
||
*/
|
||
static LLVMValueRef ac_wavefront_shift_right_1(struct ac_llvm_context *ctx, LLVMValueRef src,
|
||
LLVMValueRef identity, unsigned maxprefix)
|
||
{
|
||
if (ctx->gfx_level >= GFX10) {
|
||
/* wavefront shift_right by 1 on GFX10 (emulate dpp_wf_sr1) */
|
||
LLVMValueRef active, tmp1, tmp2;
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
|
||
tmp1 = ac_build_dpp(ctx, identity, src, dpp_row_sr(1), 0xf, 0xf, false);
|
||
|
||
tmp2 = ac_build_permlane16(ctx, src, (uint64_t)~0, true, false);
|
||
|
||
if (maxprefix > 32) {
|
||
active =
|
||
LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 32, false), "");
|
||
|
||
tmp2 = LLVMBuildSelect(ctx->builder, active,
|
||
ac_build_readlane(ctx, src, LLVMConstInt(ctx->i32, 31, false)),
|
||
tmp2, "");
|
||
|
||
active = LLVMBuildOr(
|
||
ctx->builder, active,
|
||
LLVMBuildICmp(ctx->builder, LLVMIntEQ,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x1f, false), ""),
|
||
LLVMConstInt(ctx->i32, 0x10, false), ""),
|
||
"");
|
||
return LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
} else if (maxprefix > 16) {
|
||
active =
|
||
LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 16, false), "");
|
||
|
||
return LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
}
|
||
} else if (ctx->gfx_level >= GFX8) {
|
||
return ac_build_dpp(ctx, identity, src, dpp_wf_sr1, 0xf, 0xf, false);
|
||
}
|
||
|
||
/* wavefront shift_right by 1 on SI/CI */
|
||
LLVMValueRef active, tmp1, tmp2;
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
tmp1 = ac_build_ds_swizzle(ctx, src, (1 << 15) | dpp_quad_perm(0, 0, 1, 2));
|
||
tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x18, 0x03, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x7, 0), ""),
|
||
LLVMConstInt(ctx->i32, 0x4, 0), "");
|
||
tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x10, 0x07, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0xf, 0), ""),
|
||
LLVMConstInt(ctx->i32, 0x8, 0), "");
|
||
tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
tmp2 = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x00, 0x0f, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 0x1f, 0), ""),
|
||
LLVMConstInt(ctx->i32, 0x10, 0), "");
|
||
tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
tmp2 = ac_build_readlane(ctx, src, LLVMConstInt(ctx->i32, 31, 0));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 32, 0), "");
|
||
tmp1 = LLVMBuildSelect(ctx->builder, active, tmp2, tmp1, "");
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntEQ, tid, LLVMConstInt(ctx->i32, 0, 0), "");
|
||
return LLVMBuildSelect(ctx->builder, active, identity, tmp1, "");
|
||
}
|
||
|
||
/**
|
||
* \param maxprefix specifies that the result only needs to be correct for a
|
||
* prefix of this many threads
|
||
*/
|
||
static LLVMValueRef ac_build_scan(struct ac_llvm_context *ctx, nir_op op, LLVMValueRef src,
|
||
LLVMValueRef identity, unsigned maxprefix, bool inclusive)
|
||
{
|
||
LLVMValueRef result, tmp;
|
||
|
||
if (!inclusive)
|
||
src = ac_wavefront_shift_right_1(ctx, src, identity, maxprefix);
|
||
|
||
result = src;
|
||
|
||
if (ctx->gfx_level <= GFX7) {
|
||
assert(maxprefix == 64);
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
LLVMValueRef active;
|
||
tmp = ac_build_ds_swizzle(ctx, src, ds_pattern_bitmode(0x1e, 0x00, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, ctx->i32_1, ""), ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
tmp = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1c, 0x01, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 2, 0), ""),
|
||
ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
tmp = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x18, 0x03, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 4, 0), ""),
|
||
ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
tmp = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x10, 0x07, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 8, 0), ""),
|
||
ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
tmp = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x00, 0x0f, 0x00));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 16, 0), ""),
|
||
ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
tmp = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 31, 0));
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 32, 0), ""),
|
||
ctx->i32_0, "");
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
return result;
|
||
}
|
||
|
||
if (maxprefix <= 1)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(1), 0xf, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 2)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(2), 0xf, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 3)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, src, dpp_row_sr(3), 0xf, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 4)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(4), 0xf, 0xe, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 8)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, result, dpp_row_sr(8), 0xf, 0xc, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 16)
|
||
return result;
|
||
|
||
if (ctx->gfx_level >= GFX10) {
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
LLVMValueRef active;
|
||
|
||
tmp = ac_build_permlane16(ctx, result, ~(uint64_t)0, true, false);
|
||
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntNE,
|
||
LLVMBuildAnd(ctx->builder, tid, LLVMConstInt(ctx->i32, 16, false), ""),
|
||
ctx->i32_0, "");
|
||
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
|
||
if (maxprefix <= 32)
|
||
return result;
|
||
|
||
tmp = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 31, false));
|
||
|
||
active = LLVMBuildICmp(ctx->builder, LLVMIntUGE, tid, LLVMConstInt(ctx->i32, 32, false), "");
|
||
|
||
tmp = LLVMBuildSelect(ctx->builder, active, tmp, identity, "");
|
||
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
return result;
|
||
}
|
||
|
||
tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
if (maxprefix <= 32)
|
||
return result;
|
||
tmp = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, tmp, op);
|
||
return result;
|
||
}
|
||
|
||
LLVMValueRef ac_build_inclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op)
|
||
{
|
||
LLVMValueRef result;
|
||
|
||
if (LLVMTypeOf(src) == ctx->i1 && op == nir_op_iadd) {
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
src = LLVMBuildZExt(builder, src, ctx->i32, "");
|
||
result = ac_build_ballot(ctx, src);
|
||
result = ac_build_mbcnt(ctx, result);
|
||
result = LLVMBuildAdd(builder, result, src, "");
|
||
return result;
|
||
}
|
||
|
||
ac_build_optimization_barrier(ctx, &src, false);
|
||
|
||
LLVMValueRef identity = get_reduction_identity(ctx, op, ac_get_type_size(LLVMTypeOf(src)));
|
||
result = LLVMBuildBitCast(ctx->builder, ac_build_set_inactive(ctx, src, identity),
|
||
LLVMTypeOf(identity), "");
|
||
result = ac_build_scan(ctx, op, result, identity, ctx->wave_size, true);
|
||
|
||
return ac_build_wwm(ctx, result);
|
||
}
|
||
|
||
LLVMValueRef ac_build_exclusive_scan(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op)
|
||
{
|
||
LLVMValueRef result;
|
||
|
||
if (LLVMTypeOf(src) == ctx->i1 && op == nir_op_iadd) {
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
src = LLVMBuildZExt(builder, src, ctx->i32, "");
|
||
result = ac_build_ballot(ctx, src);
|
||
result = ac_build_mbcnt(ctx, result);
|
||
return result;
|
||
}
|
||
|
||
ac_build_optimization_barrier(ctx, &src, false);
|
||
|
||
LLVMValueRef identity = get_reduction_identity(ctx, op, ac_get_type_size(LLVMTypeOf(src)));
|
||
result = LLVMBuildBitCast(ctx->builder, ac_build_set_inactive(ctx, src, identity),
|
||
LLVMTypeOf(identity), "");
|
||
result = ac_build_scan(ctx, op, result, identity, ctx->wave_size, false);
|
||
|
||
return ac_build_wwm(ctx, result);
|
||
}
|
||
|
||
LLVMValueRef ac_build_reduce(struct ac_llvm_context *ctx, LLVMValueRef src, nir_op op,
|
||
unsigned cluster_size)
|
||
{
|
||
if (cluster_size == 1)
|
||
return src;
|
||
ac_build_optimization_barrier(ctx, &src, false);
|
||
LLVMValueRef result, swap;
|
||
LLVMValueRef identity = get_reduction_identity(ctx, op, ac_get_type_size(LLVMTypeOf(src)));
|
||
result = LLVMBuildBitCast(ctx->builder, ac_build_set_inactive(ctx, src, identity),
|
||
LLVMTypeOf(identity), "");
|
||
swap = ac_build_quad_swizzle(ctx, result, 1, 0, 3, 2);
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
if (cluster_size == 2)
|
||
return ac_build_wwm(ctx, result);
|
||
|
||
swap = ac_build_quad_swizzle(ctx, result, 2, 3, 0, 1);
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
if (cluster_size == 4)
|
||
return ac_build_wwm(ctx, result);
|
||
|
||
if (ctx->gfx_level >= GFX8)
|
||
swap = ac_build_dpp(ctx, identity, result, dpp_row_half_mirror, 0xf, 0xf, false);
|
||
else
|
||
swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x04));
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
if (cluster_size == 8)
|
||
return ac_build_wwm(ctx, result);
|
||
|
||
if (ctx->gfx_level >= GFX8)
|
||
swap = ac_build_dpp(ctx, identity, result, dpp_row_mirror, 0xf, 0xf, false);
|
||
else
|
||
swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x08));
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
if (cluster_size == 16)
|
||
return ac_build_wwm(ctx, result);
|
||
|
||
if (ctx->gfx_level >= GFX10)
|
||
swap = ac_build_permlane16(ctx, result, 0, true, false);
|
||
else if (ctx->gfx_level >= GFX8 && cluster_size != 32)
|
||
swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast15, 0xa, 0xf, false);
|
||
else
|
||
swap = ac_build_ds_swizzle(ctx, result, ds_pattern_bitmode(0x1f, 0, 0x10));
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
if (cluster_size == 32)
|
||
return ac_build_wwm(ctx, result);
|
||
|
||
if (ctx->gfx_level >= GFX8) {
|
||
if (ctx->wave_size == 64) {
|
||
if (ctx->gfx_level >= GFX10)
|
||
swap = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 31, false));
|
||
else
|
||
swap = ac_build_dpp(ctx, identity, result, dpp_row_bcast31, 0xc, 0xf, false);
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 63, 0));
|
||
}
|
||
|
||
return ac_build_wwm(ctx, result);
|
||
} else {
|
||
swap = ac_build_readlane(ctx, result, ctx->i32_0);
|
||
result = ac_build_readlane(ctx, result, LLVMConstInt(ctx->i32, 32, 0));
|
||
result = ac_build_alu_op(ctx, result, swap, op);
|
||
return ac_build_wwm(ctx, result);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* "Top half" of a scan that reduces per-wave values across an entire
|
||
* workgroup.
|
||
*
|
||
* The source value must be present in the highest lane of the wave, and the
|
||
* highest lane must be live.
|
||
*/
|
||
void ac_build_wg_wavescan_top(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
if (ws->maxwaves <= 1)
|
||
return;
|
||
|
||
const LLVMValueRef last_lane = LLVMConstInt(ctx->i32, ctx->wave_size - 1, false);
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
LLVMValueRef tmp;
|
||
|
||
tmp = LLVMBuildICmp(builder, LLVMIntEQ, tid, last_lane, "");
|
||
ac_build_ifcc(ctx, tmp, 1000);
|
||
LLVMBuildStore(builder, ws->src,
|
||
LLVMBuildGEP2(builder, LLVMTypeOf(ws->src), ws->scratch, &ws->waveidx, 1, ""));
|
||
ac_build_endif(ctx, 1000);
|
||
}
|
||
|
||
/**
|
||
* "Bottom half" of a scan that reduces per-wave values across an entire
|
||
* workgroup.
|
||
*
|
||
* The caller must place a barrier between the top and bottom halves.
|
||
*/
|
||
void ac_build_wg_wavescan_bottom(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
const LLVMTypeRef type = LLVMTypeOf(ws->src);
|
||
const LLVMValueRef identity = get_reduction_identity(ctx, ws->op, ac_get_type_size(type));
|
||
|
||
if (ws->maxwaves <= 1) {
|
||
ws->result_reduce = ws->src;
|
||
ws->result_inclusive = ws->src;
|
||
ws->result_exclusive = identity;
|
||
return;
|
||
}
|
||
assert(ws->maxwaves <= 32);
|
||
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef tid = ac_get_thread_id(ctx);
|
||
LLVMBasicBlockRef bbs[2];
|
||
LLVMValueRef phivalues_scan[2];
|
||
LLVMValueRef tmp, tmp2;
|
||
|
||
bbs[0] = LLVMGetInsertBlock(builder);
|
||
phivalues_scan[0] = LLVMGetUndef(type);
|
||
|
||
if (ws->enable_reduce)
|
||
tmp = LLVMBuildICmp(builder, LLVMIntULT, tid, ws->numwaves, "");
|
||
else if (ws->enable_inclusive)
|
||
tmp = LLVMBuildICmp(builder, LLVMIntULE, tid, ws->waveidx, "");
|
||
else
|
||
tmp = LLVMBuildICmp(builder, LLVMIntULT, tid, ws->waveidx, "");
|
||
ac_build_ifcc(ctx, tmp, 1001);
|
||
{
|
||
tmp = LLVMBuildLoad2(builder, LLVMTypeOf(ws->src),
|
||
LLVMBuildGEP2(builder, LLVMTypeOf(ws->src), ws->scratch, &tid, 1, ""), "");
|
||
|
||
ac_build_optimization_barrier(ctx, &tmp, false);
|
||
|
||
bbs[1] = LLVMGetInsertBlock(builder);
|
||
phivalues_scan[1] = ac_build_scan(ctx, ws->op, tmp, identity, ws->maxwaves, true);
|
||
}
|
||
ac_build_endif(ctx, 1001);
|
||
|
||
const LLVMValueRef scan = ac_build_phi(ctx, type, 2, phivalues_scan, bbs);
|
||
|
||
if (ws->enable_reduce) {
|
||
tmp = LLVMBuildSub(builder, ws->numwaves, ctx->i32_1, "");
|
||
ws->result_reduce = ac_build_readlane(ctx, scan, tmp);
|
||
}
|
||
if (ws->enable_inclusive)
|
||
ws->result_inclusive = ac_build_readlane(ctx, scan, ws->waveidx);
|
||
if (ws->enable_exclusive) {
|
||
tmp = LLVMBuildSub(builder, ws->waveidx, ctx->i32_1, "");
|
||
tmp = ac_build_readlane(ctx, scan, tmp);
|
||
tmp2 = LLVMBuildICmp(builder, LLVMIntEQ, ws->waveidx, ctx->i32_0, "");
|
||
ws->result_exclusive = LLVMBuildSelect(builder, tmp2, identity, tmp, "");
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Inclusive scan of a per-wave value across an entire workgroup.
|
||
*
|
||
* This implies an s_barrier instruction.
|
||
*
|
||
* Unlike ac_build_inclusive_scan, the caller \em must ensure that all threads
|
||
* of the workgroup are live. (This requirement cannot easily be relaxed in a
|
||
* useful manner because of the barrier in the algorithm.)
|
||
*/
|
||
void ac_build_wg_wavescan(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
ac_build_wg_wavescan_top(ctx, ws);
|
||
ac_build_waitcnt(ctx, AC_WAIT_LGKM);
|
||
ac_build_s_barrier(ctx, ws->stage);
|
||
ac_build_wg_wavescan_bottom(ctx, ws);
|
||
}
|
||
|
||
/**
|
||
* "Top half" of a scan that reduces per-thread values across an entire
|
||
* workgroup.
|
||
*
|
||
* All lanes must be active when this code runs.
|
||
*/
|
||
void ac_build_wg_scan_top(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
if (ws->enable_exclusive) {
|
||
ws->extra = ac_build_exclusive_scan(ctx, ws->src, ws->op);
|
||
if (LLVMTypeOf(ws->src) == ctx->i1 && ws->op == nir_op_iadd)
|
||
ws->src = LLVMBuildZExt(ctx->builder, ws->src, ctx->i32, "");
|
||
ws->src = ac_build_alu_op(ctx, ws->extra, ws->src, ws->op);
|
||
} else {
|
||
ws->src = ac_build_inclusive_scan(ctx, ws->src, ws->op);
|
||
}
|
||
|
||
bool enable_inclusive = ws->enable_inclusive;
|
||
bool enable_exclusive = ws->enable_exclusive;
|
||
ws->enable_inclusive = false;
|
||
ws->enable_exclusive = ws->enable_exclusive || enable_inclusive;
|
||
ac_build_wg_wavescan_top(ctx, ws);
|
||
ws->enable_inclusive = enable_inclusive;
|
||
ws->enable_exclusive = enable_exclusive;
|
||
}
|
||
|
||
/**
|
||
* "Bottom half" of a scan that reduces per-thread values across an entire
|
||
* workgroup.
|
||
*
|
||
* The caller must place a barrier between the top and bottom halves.
|
||
*/
|
||
void ac_build_wg_scan_bottom(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
bool enable_inclusive = ws->enable_inclusive;
|
||
bool enable_exclusive = ws->enable_exclusive;
|
||
ws->enable_inclusive = false;
|
||
ws->enable_exclusive = ws->enable_exclusive || enable_inclusive;
|
||
ac_build_wg_wavescan_bottom(ctx, ws);
|
||
ws->enable_inclusive = enable_inclusive;
|
||
ws->enable_exclusive = enable_exclusive;
|
||
|
||
/* ws->result_reduce is already the correct value */
|
||
if (ws->enable_inclusive)
|
||
ws->result_inclusive = ac_build_alu_op(ctx, ws->result_inclusive, ws->src, ws->op);
|
||
if (ws->enable_exclusive)
|
||
ws->result_exclusive = ac_build_alu_op(ctx, ws->result_exclusive, ws->extra, ws->op);
|
||
}
|
||
|
||
/**
|
||
* A scan that reduces per-thread values across an entire workgroup.
|
||
*
|
||
* The caller must ensure that all lanes are active when this code runs
|
||
* (WWM is insufficient!), because there is an implied barrier.
|
||
*/
|
||
void ac_build_wg_scan(struct ac_llvm_context *ctx, struct ac_wg_scan *ws)
|
||
{
|
||
ac_build_wg_scan_top(ctx, ws);
|
||
ac_build_waitcnt(ctx, AC_WAIT_LGKM);
|
||
ac_build_s_barrier(ctx, ws->stage);
|
||
ac_build_wg_scan_bottom(ctx, ws);
|
||
}
|
||
|
||
static void _ac_build_dual_src_blend_swizzle(struct ac_llvm_context *ctx,
|
||
LLVMValueRef *arg0, LLVMValueRef *arg1)
|
||
{
|
||
LLVMValueRef tid;
|
||
LLVMValueRef src0, src1;
|
||
LLVMValueRef tmp0;
|
||
LLVMValueRef params[2];
|
||
LLVMValueRef is_even;
|
||
|
||
src0 = LLVMBuildBitCast(ctx->builder, *arg0, ctx->i32, "");
|
||
src1 = LLVMBuildBitCast(ctx->builder, *arg1, ctx->i32, "");
|
||
|
||
/* swap odd,even lanes of arg_0*/
|
||
params[0] = src0;
|
||
params[1] = LLVMConstInt(ctx->i32, 0xde54c1, 0);
|
||
src0 = ac_build_intrinsic(ctx, "llvm.amdgcn.mov.dpp8.i32",
|
||
ctx->i32, params, 2, AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
/* swap even lanes between arg_0 and arg_1 */
|
||
tid = ac_get_thread_id(ctx);
|
||
is_even = LLVMBuildICmp(ctx->builder, LLVMIntEQ,
|
||
LLVMBuildAnd(ctx->builder, tid, ctx->i32_1, ""),
|
||
ctx->i32_0, "");
|
||
tmp0 = src0;
|
||
src0 = LLVMBuildSelect(ctx->builder, is_even, src1, src0, "");
|
||
src1 = LLVMBuildSelect(ctx->builder, is_even, tmp0, src1, "");
|
||
|
||
/* swap odd,even lanes again for arg_0*/
|
||
params[0] = src0;
|
||
params[1] = LLVMConstInt(ctx->i32, 0xde54c1, 0);
|
||
src0 = ac_build_intrinsic(ctx, "llvm.amdgcn.mov.dpp8.i32",
|
||
ctx->i32, params, 2, AC_FUNC_ATTR_CONVERGENT);
|
||
|
||
*arg0 = src0;
|
||
*arg1 = src1;
|
||
}
|
||
|
||
void ac_build_dual_src_blend_swizzle(struct ac_llvm_context *ctx,
|
||
struct ac_export_args *mrt0,
|
||
struct ac_export_args *mrt1)
|
||
{
|
||
assert(ctx->gfx_level >= GFX11);
|
||
assert(mrt0->enabled_channels == mrt1->enabled_channels);
|
||
|
||
for (int i = 0; i < 4; i++) {
|
||
if (mrt0->enabled_channels & (1 << i) && mrt1->enabled_channels & (1 << i))
|
||
_ac_build_dual_src_blend_swizzle(ctx, &mrt0->out[i], &mrt1->out[i]);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_quad_swizzle(struct ac_llvm_context *ctx, LLVMValueRef src, unsigned lane0,
|
||
unsigned lane1, unsigned lane2, unsigned lane3)
|
||
{
|
||
unsigned mask = dpp_quad_perm(lane0, lane1, lane2, lane3);
|
||
if (ctx->gfx_level >= GFX8) {
|
||
return ac_build_dpp(ctx, src, src, mask, 0xf, 0xf, false);
|
||
} else {
|
||
return ac_build_ds_swizzle(ctx, src, (1 << 15) | mask);
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_shuffle(struct ac_llvm_context *ctx, LLVMValueRef src, LLVMValueRef index)
|
||
{
|
||
LLVMTypeRef type = LLVMTypeOf(src);
|
||
LLVMValueRef result;
|
||
|
||
index = LLVMBuildMul(ctx->builder, index, LLVMConstInt(ctx->i32, 4, 0), "");
|
||
src = LLVMBuildZExt(ctx->builder, src, ctx->i32, "");
|
||
|
||
result =
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.ds.bpermute", ctx->i32, (LLVMValueRef[]){index, src}, 2,
|
||
AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT);
|
||
return LLVMBuildTrunc(ctx->builder, result, type, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_frexp_exp(struct ac_llvm_context *ctx, LLVMValueRef src0, unsigned bitsize)
|
||
{
|
||
LLVMTypeRef type;
|
||
char *intr;
|
||
|
||
if (bitsize == 16) {
|
||
intr = "llvm.amdgcn.frexp.exp.i16.f16";
|
||
type = ctx->i16;
|
||
} else if (bitsize == 32) {
|
||
intr = "llvm.amdgcn.frexp.exp.i32.f32";
|
||
type = ctx->i32;
|
||
} else {
|
||
intr = "llvm.amdgcn.frexp.exp.i32.f64";
|
||
type = ctx->i32;
|
||
}
|
||
|
||
LLVMValueRef params[] = {
|
||
src0,
|
||
};
|
||
return ac_build_intrinsic(ctx, intr, type, params, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
LLVMValueRef ac_build_frexp_mant(struct ac_llvm_context *ctx, LLVMValueRef src0, unsigned bitsize)
|
||
{
|
||
LLVMTypeRef type;
|
||
char *intr;
|
||
|
||
if (bitsize == 16) {
|
||
intr = "llvm.amdgcn.frexp.mant.f16";
|
||
type = ctx->f16;
|
||
} else if (bitsize == 32) {
|
||
intr = "llvm.amdgcn.frexp.mant.f32";
|
||
type = ctx->f32;
|
||
} else {
|
||
intr = "llvm.amdgcn.frexp.mant.f64";
|
||
type = ctx->f64;
|
||
}
|
||
|
||
LLVMValueRef params[] = {
|
||
src0,
|
||
};
|
||
return ac_build_intrinsic(ctx, intr, type, params, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
LLVMValueRef ac_build_canonicalize(struct ac_llvm_context *ctx, LLVMValueRef src0, unsigned bitsize)
|
||
{
|
||
LLVMTypeRef type;
|
||
char *intr;
|
||
|
||
if (bitsize == 16) {
|
||
intr = "llvm.canonicalize.f16";
|
||
type = ctx->f16;
|
||
} else if (bitsize == 32) {
|
||
intr = "llvm.canonicalize.f32";
|
||
type = ctx->f32;
|
||
} else {
|
||
intr = "llvm.canonicalize.f64";
|
||
type = ctx->f64;
|
||
}
|
||
|
||
LLVMValueRef params[] = {
|
||
src0,
|
||
};
|
||
return ac_build_intrinsic(ctx, intr, type, params, 1, AC_FUNC_ATTR_READNONE);
|
||
}
|
||
|
||
/*
|
||
* this takes an I,J coordinate pair,
|
||
* and works out the X and Y derivatives.
|
||
* it returns DDX(I), DDX(J), DDY(I), DDY(J).
|
||
*/
|
||
LLVMValueRef ac_build_ddxy_interp(struct ac_llvm_context *ctx, LLVMValueRef interp_ij)
|
||
{
|
||
LLVMValueRef result[4], a;
|
||
unsigned i;
|
||
|
||
for (i = 0; i < 2; i++) {
|
||
a = LLVMBuildExtractElement(ctx->builder, interp_ij, LLVMConstInt(ctx->i32, i, false), "");
|
||
result[i] = ac_build_ddxy(ctx, AC_TID_MASK_TOP_LEFT, 1, a);
|
||
result[2 + i] = ac_build_ddxy(ctx, AC_TID_MASK_TOP_LEFT, 2, a);
|
||
}
|
||
return ac_build_gather_values(ctx, result, 4);
|
||
}
|
||
|
||
LLVMValueRef ac_build_load_helper_invocation(struct ac_llvm_context *ctx)
|
||
{
|
||
LLVMValueRef result;
|
||
|
||
if (LLVM_VERSION_MAJOR >= 13) {
|
||
result = ac_build_intrinsic(ctx, "llvm.amdgcn.live.mask", ctx->i1, NULL, 0,
|
||
AC_FUNC_ATTR_READONLY | AC_FUNC_ATTR_INACCESSIBLE_MEM_ONLY);
|
||
} else {
|
||
result = ac_build_intrinsic(ctx, "llvm.amdgcn.ps.live", ctx->i1, NULL, 0,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|
||
return LLVMBuildNot(ctx->builder, result, "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_is_helper_invocation(struct ac_llvm_context *ctx)
|
||
{
|
||
if (!ctx->postponed_kill)
|
||
return ac_build_load_helper_invocation(ctx);
|
||
|
||
/* postponed_kill should be NULL on LLVM 13+ */
|
||
assert(LLVM_VERSION_MAJOR < 13);
|
||
|
||
/* !(exact && postponed) */
|
||
LLVMValueRef exact =
|
||
ac_build_intrinsic(ctx, "llvm.amdgcn.ps.live", ctx->i1, NULL, 0, AC_FUNC_ATTR_READNONE);
|
||
|
||
LLVMValueRef postponed = LLVMBuildLoad2(ctx->builder, ctx->i1, ctx->postponed_kill, "");
|
||
return LLVMBuildNot(ctx->builder, LLVMBuildAnd(ctx->builder, exact, postponed, ""), "");
|
||
}
|
||
|
||
LLVMValueRef ac_build_call(struct ac_llvm_context *ctx, LLVMValueRef func, LLVMValueRef *args,
|
||
unsigned num_args)
|
||
{
|
||
LLVMValueRef ret = LLVMBuildCall(ctx->builder, func, args, num_args, "");
|
||
LLVMSetInstructionCallConv(ret, LLVMGetFunctionCallConv(func));
|
||
return ret;
|
||
}
|
||
|
||
void ac_export_mrt_z(struct ac_llvm_context *ctx, LLVMValueRef depth, LLVMValueRef stencil,
|
||
LLVMValueRef samplemask, LLVMValueRef mrt0_alpha, bool is_last,
|
||
struct ac_export_args *args)
|
||
{
|
||
unsigned mask = 0;
|
||
unsigned format = ac_get_spi_shader_z_format(depth != NULL, stencil != NULL, samplemask != NULL,
|
||
mrt0_alpha != NULL);
|
||
|
||
assert(depth || stencil || samplemask);
|
||
|
||
memset(args, 0, sizeof(*args));
|
||
|
||
if (is_last) {
|
||
args->valid_mask = 1; /* whether the EXEC mask is valid */
|
||
args->done = 1; /* DONE bit */
|
||
}
|
||
|
||
/* Specify the target we are exporting */
|
||
args->target = V_008DFC_SQ_EXP_MRTZ;
|
||
|
||
args->compr = 0; /* COMP flag */
|
||
args->out[0] = LLVMGetUndef(ctx->f32); /* R, depth */
|
||
args->out[1] = LLVMGetUndef(ctx->f32); /* G, stencil test val[0:7], stencil op val[8:15] */
|
||
args->out[2] = LLVMGetUndef(ctx->f32); /* B, sample mask */
|
||
args->out[3] = LLVMGetUndef(ctx->f32); /* A, alpha to mask */
|
||
|
||
if (format == V_028710_SPI_SHADER_UINT16_ABGR) {
|
||
assert(!depth);
|
||
args->compr = ctx->gfx_level < GFX11; /* COMPR flag */
|
||
|
||
if (stencil) {
|
||
/* Stencil should be in X[23:16]. */
|
||
stencil = ac_to_integer(ctx, stencil);
|
||
stencil = LLVMBuildShl(ctx->builder, stencil, LLVMConstInt(ctx->i32, 16, 0), "");
|
||
args->out[0] = ac_to_float(ctx, stencil);
|
||
mask |= ctx->gfx_level >= GFX11 ? 0x1 : 0x3;
|
||
}
|
||
if (samplemask) {
|
||
/* SampleMask should be in Y[15:0]. */
|
||
args->out[1] = samplemask;
|
||
mask |= ctx->gfx_level >= GFX11 ? 0x2 : 0xc;
|
||
}
|
||
} else {
|
||
if (depth) {
|
||
args->out[0] = depth;
|
||
mask |= 0x1;
|
||
}
|
||
if (stencil) {
|
||
args->out[1] = stencil;
|
||
mask |= 0x2;
|
||
}
|
||
if (samplemask) {
|
||
args->out[2] = samplemask;
|
||
mask |= 0x4;
|
||
}
|
||
if (mrt0_alpha) {
|
||
args->out[3] = mrt0_alpha;
|
||
mask |= 0x8;
|
||
}
|
||
}
|
||
|
||
/* GFX6 (except OLAND and HAINAN) has a bug that it only looks
|
||
* at the X writemask component. */
|
||
if (ctx->gfx_level == GFX6 && ctx->family != CHIP_OLAND && ctx->family != CHIP_HAINAN)
|
||
mask |= 0x1;
|
||
|
||
/* Specify which components to enable */
|
||
args->enabled_channels = mask;
|
||
}
|
||
|
||
/* Send GS Alloc Req message from the first wave of the group to SPI.
|
||
* Message payload is:
|
||
* - bits 0..10: vertices in group
|
||
* - bits 12..22: primitives in group
|
||
*/
|
||
void ac_build_sendmsg_gs_alloc_req(struct ac_llvm_context *ctx, LLVMValueRef wave_id,
|
||
LLVMValueRef vtx_cnt, LLVMValueRef prim_cnt)
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef tmp;
|
||
bool export_dummy_prim = false;
|
||
|
||
/* HW workaround for a GPU hang with 100% culling.
|
||
* We always have to export at least 1 primitive.
|
||
* Export a degenerate triangle using vertex 0 for all 3 vertices.
|
||
*/
|
||
if (prim_cnt == ctx->i32_0 && ctx->gfx_level == GFX10) {
|
||
assert(vtx_cnt == ctx->i32_0);
|
||
prim_cnt = ctx->i32_1;
|
||
vtx_cnt = ctx->i32_1;
|
||
export_dummy_prim = true;
|
||
}
|
||
|
||
if (wave_id)
|
||
ac_build_ifcc(ctx, LLVMBuildICmp(builder, LLVMIntEQ, wave_id, ctx->i32_0, ""), 5020);
|
||
|
||
tmp = LLVMBuildShl(builder, prim_cnt, LLVMConstInt(ctx->i32, 12, false), "");
|
||
tmp = LLVMBuildOr(builder, tmp, vtx_cnt, "");
|
||
ac_build_sendmsg(ctx, AC_SENDMSG_GS_ALLOC_REQ, tmp);
|
||
|
||
if (export_dummy_prim) {
|
||
struct ac_ngg_prim prim = {0};
|
||
/* The vertex indices are 0,0,0. */
|
||
prim.passthrough = ctx->i32_0;
|
||
|
||
struct ac_export_args pos = {0};
|
||
/* The hw culls primitives with NaN. */
|
||
pos.out[0] = pos.out[1] = pos.out[2] = pos.out[3] = LLVMConstReal(ctx->f32, NAN);
|
||
pos.target = V_008DFC_SQ_EXP_POS;
|
||
pos.enabled_channels = 0xf;
|
||
pos.done = true;
|
||
|
||
ac_build_ifcc(ctx, LLVMBuildICmp(builder, LLVMIntEQ, ac_get_thread_id(ctx), ctx->i32_0, ""),
|
||
5021);
|
||
ac_build_export_prim(ctx, &prim);
|
||
ac_build_export(ctx, &pos);
|
||
ac_build_endif(ctx, 5021);
|
||
}
|
||
|
||
if (wave_id)
|
||
ac_build_endif(ctx, 5020);
|
||
}
|
||
|
||
|
||
LLVMValueRef ac_pack_edgeflags_for_export(struct ac_llvm_context *ctx,
|
||
const struct ac_shader_args *args)
|
||
{
|
||
/* Use the following trick to extract the edge flags:
|
||
* extracted = v_and_b32 gs_invocation_id, 0x700 ; get edge flags at bits 8, 9, 10
|
||
* shifted = v_mul_u32_u24 extracted, 0x80402u ; shift the bits: 8->9, 9->19, 10->29
|
||
* result = v_and_b32 shifted, 0x20080200 ; remove garbage
|
||
*/
|
||
LLVMValueRef tmp = LLVMBuildAnd(ctx->builder,
|
||
ac_get_arg(ctx, args->gs_invocation_id),
|
||
LLVMConstInt(ctx->i32, 0x700, 0), "");
|
||
tmp = LLVMBuildMul(ctx->builder, tmp, LLVMConstInt(ctx->i32, 0x80402u, 0), "");
|
||
return LLVMBuildAnd(ctx->builder, tmp, LLVMConstInt(ctx->i32, 0x20080200, 0), "");
|
||
}
|
||
|
||
LLVMValueRef ac_pack_prim_export(struct ac_llvm_context *ctx, const struct ac_ngg_prim *prim)
|
||
{
|
||
/* The prim export format is:
|
||
* - bits 0..8: index 0
|
||
* - bit 9: edge flag 0
|
||
* - bits 10..18: index 1
|
||
* - bit 19: edge flag 1
|
||
* - bits 20..28: index 2
|
||
* - bit 29: edge flag 2
|
||
* - bit 31: null primitive (skip)
|
||
*/
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef tmp = LLVMBuildZExt(builder, prim->isnull, ctx->i32, "");
|
||
LLVMValueRef result = LLVMBuildShl(builder, tmp, LLVMConstInt(ctx->i32, 31, false), "");
|
||
result = LLVMBuildOr(ctx->builder, result, prim->edgeflags, "");
|
||
|
||
for (unsigned i = 0; i < prim->num_vertices; ++i) {
|
||
tmp = LLVMBuildShl(builder, prim->index[i], LLVMConstInt(ctx->i32, 10 * i, false), "");
|
||
result = LLVMBuildOr(builder, result, tmp, "");
|
||
}
|
||
return result;
|
||
}
|
||
|
||
void ac_build_export_prim(struct ac_llvm_context *ctx, const struct ac_ngg_prim *prim)
|
||
{
|
||
struct ac_export_args args;
|
||
|
||
if (prim->passthrough) {
|
||
args.out[0] = prim->passthrough;
|
||
} else {
|
||
args.out[0] = ac_pack_prim_export(ctx, prim);
|
||
}
|
||
|
||
args.out[0] = LLVMBuildBitCast(ctx->builder, args.out[0], ctx->f32, "");
|
||
args.out[1] = LLVMGetUndef(ctx->f32);
|
||
args.out[2] = LLVMGetUndef(ctx->f32);
|
||
args.out[3] = LLVMGetUndef(ctx->f32);
|
||
|
||
args.target = V_008DFC_SQ_EXP_PRIM;
|
||
args.enabled_channels = 1;
|
||
args.done = true;
|
||
args.valid_mask = false;
|
||
args.compr = false;
|
||
|
||
ac_build_export(ctx, &args);
|
||
}
|
||
|
||
static LLVMTypeRef arg_llvm_type(enum ac_arg_type type, unsigned size, struct ac_llvm_context *ctx)
|
||
{
|
||
if (type == AC_ARG_FLOAT) {
|
||
return size == 1 ? ctx->f32 : LLVMVectorType(ctx->f32, size);
|
||
} else if (type == AC_ARG_INT) {
|
||
return size == 1 ? ctx->i32 : LLVMVectorType(ctx->i32, size);
|
||
} else {
|
||
LLVMTypeRef ptr_type;
|
||
switch (type) {
|
||
case AC_ARG_CONST_PTR:
|
||
ptr_type = ctx->i8;
|
||
break;
|
||
case AC_ARG_CONST_FLOAT_PTR:
|
||
ptr_type = ctx->f32;
|
||
break;
|
||
case AC_ARG_CONST_PTR_PTR:
|
||
ptr_type = ac_array_in_const32_addr_space(ctx->i8);
|
||
break;
|
||
case AC_ARG_CONST_DESC_PTR:
|
||
ptr_type = ctx->v4i32;
|
||
break;
|
||
case AC_ARG_CONST_IMAGE_PTR:
|
||
ptr_type = ctx->v8i32;
|
||
break;
|
||
default:
|
||
unreachable("unknown arg type");
|
||
}
|
||
if (size == 1) {
|
||
return ac_array_in_const32_addr_space(ptr_type);
|
||
} else {
|
||
assert(size == 2);
|
||
return ac_array_in_const_addr_space(ptr_type);
|
||
}
|
||
}
|
||
}
|
||
|
||
LLVMValueRef ac_build_main(const struct ac_shader_args *args, struct ac_llvm_context *ctx,
|
||
enum ac_llvm_calling_convention convention, const char *name,
|
||
LLVMTypeRef ret_type, LLVMModuleRef module)
|
||
{
|
||
LLVMTypeRef arg_types[AC_MAX_ARGS];
|
||
|
||
for (unsigned i = 0; i < args->arg_count; i++) {
|
||
arg_types[i] = arg_llvm_type(args->args[i].type, args->args[i].size, ctx);
|
||
}
|
||
|
||
LLVMTypeRef main_function_type = LLVMFunctionType(ret_type, arg_types, args->arg_count, 0);
|
||
|
||
LLVMValueRef main_function = LLVMAddFunction(module, name, main_function_type);
|
||
LLVMBasicBlockRef main_function_body =
|
||
LLVMAppendBasicBlockInContext(ctx->context, main_function, "main_body");
|
||
LLVMPositionBuilderAtEnd(ctx->builder, main_function_body);
|
||
|
||
LLVMSetFunctionCallConv(main_function, convention);
|
||
for (unsigned i = 0; i < args->arg_count; ++i) {
|
||
LLVMValueRef P = LLVMGetParam(main_function, i);
|
||
|
||
if (args->args[i].file != AC_ARG_SGPR)
|
||
continue;
|
||
|
||
ac_add_function_attr(ctx->context, main_function, i + 1, AC_FUNC_ATTR_INREG);
|
||
|
||
if (LLVMGetTypeKind(LLVMTypeOf(P)) == LLVMPointerTypeKind) {
|
||
ac_add_function_attr(ctx->context, main_function, i + 1, AC_FUNC_ATTR_NOALIAS);
|
||
ac_add_attr_dereferenceable(P, UINT64_MAX);
|
||
ac_add_attr_alignment(P, 4);
|
||
}
|
||
}
|
||
|
||
ctx->main_function = main_function;
|
||
|
||
/* Enable denormals for FP16 and FP64: */
|
||
LLVMAddTargetDependentFunctionAttr(main_function, "denormal-fp-math", "ieee,ieee");
|
||
/* Disable denormals for FP32: */
|
||
LLVMAddTargetDependentFunctionAttr(main_function, "denormal-fp-math-f32",
|
||
"preserve-sign,preserve-sign");
|
||
return main_function;
|
||
}
|
||
|
||
void ac_build_s_endpgm(struct ac_llvm_context *ctx)
|
||
{
|
||
LLVMTypeRef calltype = LLVMFunctionType(ctx->voidt, NULL, 0, false);
|
||
LLVMValueRef code = LLVMConstInlineAsm(calltype, "s_endpgm", "", true, false);
|
||
LLVMBuildCall2(ctx->builder, calltype, code, NULL, 0, "");
|
||
}
|
||
|
||
/**
|
||
* Convert triangle strip indices to triangle indices. This is used to decompose
|
||
* triangle strips into triangles.
|
||
*/
|
||
void ac_build_triangle_strip_indices_to_triangle(struct ac_llvm_context *ctx, LLVMValueRef is_odd,
|
||
LLVMValueRef flatshade_first,
|
||
LLVMValueRef index[3])
|
||
{
|
||
LLVMBuilderRef builder = ctx->builder;
|
||
LLVMValueRef out[3];
|
||
|
||
/* We need to change the vertex order for odd triangles to get correct
|
||
* front/back facing by swapping 2 vertex indices, but we also have to
|
||
* keep the provoking vertex in the same place.
|
||
*
|
||
* If the first vertex is provoking, swap index 1 and 2.
|
||
* If the last vertex is provoking, swap index 0 and 1.
|
||
*/
|
||
out[0] = LLVMBuildSelect(builder, flatshade_first, index[0],
|
||
LLVMBuildSelect(builder, is_odd, index[1], index[0], ""), "");
|
||
out[1] = LLVMBuildSelect(builder, flatshade_first,
|
||
LLVMBuildSelect(builder, is_odd, index[2], index[1], ""),
|
||
LLVMBuildSelect(builder, is_odd, index[0], index[1], ""), "");
|
||
out[2] = LLVMBuildSelect(builder, flatshade_first,
|
||
LLVMBuildSelect(builder, is_odd, index[1], index[2], ""), index[2], "");
|
||
memcpy(index, out, sizeof(out));
|
||
}
|
||
|
||
LLVMValueRef ac_build_is_inf_or_nan(struct ac_llvm_context *ctx, LLVMValueRef a)
|
||
{
|
||
LLVMValueRef args[2] = {
|
||
a,
|
||
LLVMConstInt(ctx->i32, S_NAN | Q_NAN | N_INFINITY | P_INFINITY, 0),
|
||
};
|
||
return ac_build_intrinsic(ctx, "llvm.amdgcn.class.f32", ctx->i1, args, 2,
|
||
AC_FUNC_ATTR_READNONE);
|
||
}
|