llvmpipe: Comparisons translation.
This commit is contained in:
José Fonseca
parent
818d444e12
commit
1aede69d3a
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@ -19,6 +19,7 @@ llvmpipe = env.ConvenienceLibrary(
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'lp_bld_load.c',
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'lp_bld_store.c',
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'lp_bld_loop.c',
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'lp_bld_logic.c',
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'lp_bld_logicop.c',
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'lp_bld_swizzle.c',
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'lp_bld_tgsi_soa.c',
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@ -0,0 +1,174 @@
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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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 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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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "pipe/p_defines.h"
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#include "lp_bld_type.h"
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#include "lp_bld_intr.h"
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#include "lp_bld_logic.h"
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LLVMValueRef
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lp_build_cmp(struct lp_build_context *bld,
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unsigned func,
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LLVMValueRef a,
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LLVMValueRef b)
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{
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const union lp_type type = bld->type;
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LLVMTypeRef vec_type = lp_build_vec_type(type);
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LLVMTypeRef int_vec_type = lp_build_int_vec_type(type);
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LLVMValueRef zeros = LLVMConstNull(int_vec_type);
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LLVMValueRef ones = LLVMConstAllOnes(int_vec_type);
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LLVMValueRef cond;
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if(func == PIPE_FUNC_NEVER)
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return zeros;
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if(func == PIPE_FUNC_ALWAYS)
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return ones;
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/* TODO: optimize the constant case */
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/* XXX: It is not clear if we should use the ordered or unordered operators */
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#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
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if(type.width * type.length == 128) {
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if(type.floating) {
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LLVMValueRef args[3];
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unsigned cc;
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boolean swap;
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LLVMValueRef res;
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swap = FALSE;
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switch(func) {
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case PIPE_FUNC_EQUAL:
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cc = 0;
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break;
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case PIPE_FUNC_NOTEQUAL:
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cc = 4;
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break;
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case PIPE_FUNC_LESS:
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cc = 1;
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break;
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case PIPE_FUNC_LEQUAL:
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cc = 2;
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break;
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case PIPE_FUNC_GREATER:
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cc = 1;
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swap = TRUE;
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break;
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case PIPE_FUNC_GEQUAL:
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cc = 2;
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swap = TRUE;
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break;
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default:
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assert(0);
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return bld->undef;
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}
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if(swap) {
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args[0] = b;
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args[1] = a;
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}
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else {
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args[0] = a;
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args[1] = b;
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}
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args[2] = LLVMConstInt(LLVMInt8Type(), cc, 0);
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res = lp_build_intrinsic(bld->builder,
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"llvm.x86.sse.cmp.ps",
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vec_type,
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args, 3);
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res = LLVMBuildBitCast(bld->builder, res, int_vec_type, "");
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return res;
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}
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}
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#endif
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if(type.floating) {
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LLVMRealPredicate op;
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switch(func) {
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case PIPE_FUNC_NEVER:
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op = LLVMRealPredicateFalse;
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break;
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case PIPE_FUNC_ALWAYS:
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op = LLVMRealPredicateTrue;
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break;
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case PIPE_FUNC_EQUAL:
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op = LLVMRealUEQ;
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break;
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case PIPE_FUNC_NOTEQUAL:
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op = LLVMRealUNE;
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break;
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case PIPE_FUNC_LESS:
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op = LLVMRealULT;
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break;
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case PIPE_FUNC_LEQUAL:
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op = LLVMRealULE;
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break;
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case PIPE_FUNC_GREATER:
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op = LLVMRealUGT;
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break;
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case PIPE_FUNC_GEQUAL:
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op = LLVMRealUGE;
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break;
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default:
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assert(0);
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return bld->undef;
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}
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cond = LLVMBuildFCmp(bld->builder, op, a, b, "");
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}
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else {
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LLVMIntPredicate op;
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switch(func) {
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case PIPE_FUNC_EQUAL:
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op = LLVMIntEQ;
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break;
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case PIPE_FUNC_NOTEQUAL:
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op = LLVMIntNE;
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break;
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case PIPE_FUNC_LESS:
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op = type.sign ? LLVMIntSLT : LLVMIntULT;
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break;
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case PIPE_FUNC_LEQUAL:
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op = type.sign ? LLVMIntSLE : LLVMIntULE;
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break;
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case PIPE_FUNC_GREATER:
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op = type.sign ? LLVMIntSGT : LLVMIntUGT;
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break;
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case PIPE_FUNC_GEQUAL:
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op = type.sign ? LLVMIntSGE : LLVMIntUGE;
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break;
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default:
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assert(0);
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return bld->undef;
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}
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cond = LLVMBuildICmp(bld->builder, op, a, b, "");
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}
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return LLVMBuildSelect(bld->builder, cond, ones, zeros, "");
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}
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@ -0,0 +1,57 @@
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/**************************************************************************
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*
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* Copyright 2009 VMware, Inc.
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* All Rights Reserved.
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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 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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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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/**
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* @file
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* Helper functions for logical operations.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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#ifndef LP_BLD_LOGIC_H
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#define LP_BLD_LOGIC_H
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#include <llvm-c/Core.h>
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union lp_type type;
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struct lp_build_context;
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/**
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* @param func is one of PIPE_FUNC_xxx
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*/
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LLVMValueRef
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lp_build_cmp(struct lp_build_context *bld,
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unsigned func,
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LLVMValueRef a,
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LLVMValueRef b);
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#endif /* !LP_BLD_LOGIC_H */
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