2009-08-01 17:27:05 +01:00
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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
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*
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* LLVM IR doesn't support all basic arithmetic operations we care about (most
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* notably min/max and saturated operations), and it is often necessary to
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* resort machine-specific intrinsics directly. The functions here hide all
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* these implementation details from the other modules.
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*
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* We also do simple expressions simplification here. Reasons are:
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* - it is very easy given we have all necessary information readily available
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* - LLVM optimization passes fail to simplify several vector expressions
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* - We often know value constraints which the optimization passes have no way
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* of knowing, such as when source arguments are known to be in [0, 1] range.
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*
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* @author Jose Fonseca <jfonseca@vmware.com>
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*/
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2009-08-03 22:31:08 +01:00
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#include "util/u_debug.h"
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2009-08-01 17:27:05 +01:00
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2009-08-03 22:24:01 +01:00
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#include "lp_bld_type.h"
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2009-08-07 01:16:59 +01:00
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#include "lp_bld_intr.h"
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2009-08-01 17:27:05 +01:00
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#include "lp_bld_arit.h"
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2009-08-02 17:54:53 +01:00
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static LLVMValueRef
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lp_build_min_simple(struct lp_build_context *bld,
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LLVMValueRef a,
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LLVMValueRef b)
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2009-08-01 17:27:05 +01:00
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{
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2009-08-02 17:54:53 +01:00
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const union lp_type type = bld->type;
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const char *intrinsic = NULL;
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LLVMValueRef cond;
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/* TODO: optimize the constant case */
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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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2009-08-08 22:57:03 +01:00
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if(type.floating) {
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2009-08-02 17:54:53 +01:00
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if(type.width == 32)
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intrinsic = "llvm.x86.sse.min.ps";
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if(type.width == 64)
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intrinsic = "llvm.x86.sse2.min.pd";
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2009-08-08 22:57:03 +01:00
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}
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2009-08-02 17:54:53 +01:00
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else {
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if(type.width == 8 && !type.sign)
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intrinsic = "llvm.x86.sse2.pminu.b";
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2009-08-08 22:57:03 +01:00
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if(type.width == 8 && type.sign)
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intrinsic = "llvm.x86.sse41.pminsb";
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if(type.width == 16 && !type.sign)
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intrinsic = "llvm.x86.sse41.pminuw";
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2009-08-02 17:54:53 +01:00
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if(type.width == 16 && type.sign)
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intrinsic = "llvm.x86.sse2.pmins.w";
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2009-08-08 22:57:03 +01:00
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if(type.width == 32 && !type.sign)
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intrinsic = "llvm.x86.sse41.pminud";
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if(type.width == 32 && type.sign)
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intrinsic = "llvm.x86.sse41.pminsd";
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2009-08-02 17:54:53 +01:00
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}
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}
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#endif
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2009-08-11 13:09:35 +01:00
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2009-08-02 17:54:53 +01:00
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if(intrinsic)
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2009-08-07 01:16:59 +01:00
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return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
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2009-08-02 17:54:53 +01:00
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if(type.floating)
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cond = LLVMBuildFCmp(bld->builder, LLVMRealULT, a, b, "");
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2009-08-01 17:27:05 +01:00
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else
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2009-08-02 17:54:53 +01:00
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cond = LLVMBuildICmp(bld->builder, type.sign ? LLVMIntSLT : LLVMIntULT, a, b, "");
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return LLVMBuildSelect(bld->builder, cond, a, b, "");
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2009-08-01 17:27:05 +01:00
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}
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2009-08-02 17:54:53 +01:00
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static LLVMValueRef
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lp_build_max_simple(struct lp_build_context *bld,
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LLVMValueRef a,
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LLVMValueRef b)
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2009-08-01 17:27:05 +01:00
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{
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2009-08-02 17:54:53 +01:00
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const union lp_type type = bld->type;
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const char *intrinsic = NULL;
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LLVMValueRef cond;
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/* TODO: optimize the constant case */
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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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2009-08-08 22:57:03 +01:00
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if(type.floating) {
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2009-08-02 17:54:53 +01:00
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if(type.width == 32)
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intrinsic = "llvm.x86.sse.max.ps";
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if(type.width == 64)
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intrinsic = "llvm.x86.sse2.max.pd";
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2009-08-08 22:57:03 +01:00
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}
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2009-08-02 17:54:53 +01:00
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else {
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if(type.width == 8 && !type.sign)
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intrinsic = "llvm.x86.sse2.pmaxu.b";
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2009-08-08 22:57:03 +01:00
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if(type.width == 8 && type.sign)
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intrinsic = "llvm.x86.sse41.pmaxsb";
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if(type.width == 16 && !type.sign)
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intrinsic = "llvm.x86.sse41.pmaxuw";
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2009-08-02 17:54:53 +01:00
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if(type.width == 16 && type.sign)
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intrinsic = "llvm.x86.sse2.pmaxs.w";
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2009-08-08 22:57:03 +01:00
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if(type.width == 32 && !type.sign)
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intrinsic = "llvm.x86.sse41.pmaxud";
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if(type.width == 32 && type.sign)
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intrinsic = "llvm.x86.sse41.pmaxsd";
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2009-08-02 17:54:53 +01:00
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}
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}
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#endif
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if(intrinsic)
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2009-08-07 01:16:59 +01:00
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return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
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2009-08-02 17:54:53 +01:00
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if(type.floating)
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cond = LLVMBuildFCmp(bld->builder, LLVMRealULT, a, b, "");
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2009-08-01 17:27:05 +01:00
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else
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2009-08-02 17:54:53 +01:00
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cond = LLVMBuildICmp(bld->builder, type.sign ? LLVMIntSLT : LLVMIntULT, a, b, "");
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return LLVMBuildSelect(bld->builder, cond, b, a, "");
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2009-08-01 17:27:05 +01:00
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}
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LLVMValueRef
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2009-08-02 17:54:53 +01:00
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lp_build_comp(struct lp_build_context *bld,
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LLVMValueRef a)
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2009-08-01 17:27:05 +01:00
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{
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2009-08-02 17:54:53 +01:00
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const union lp_type type = bld->type;
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if(a == bld->one)
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return bld->zero;
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if(a == bld->zero)
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return bld->one;
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if(type.norm && !type.floating && !type.fixed && !type.sign) {
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if(LLVMIsConstant(a))
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return LLVMConstNot(a);
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else
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return LLVMBuildNot(bld->builder, a, "");
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}
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if(LLVMIsConstant(a))
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return LLVMConstSub(bld->one, a);
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2009-08-01 17:27:05 +01:00
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else
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2009-08-02 17:54:53 +01:00
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return LLVMBuildSub(bld->builder, bld->one, a, "");
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2009-08-01 17:27:05 +01:00
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}
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LLVMValueRef
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2009-08-02 17:54:53 +01:00
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lp_build_add(struct lp_build_context *bld,
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2009-08-01 17:27:05 +01:00
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LLVMValueRef a,
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LLVMValueRef b)
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{
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2009-08-02 17:54:53 +01:00
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const union lp_type type = bld->type;
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LLVMValueRef res;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(a == bld->zero)
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return b;
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if(b == bld->zero)
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return a;
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if(a == bld->undef || b == bld->undef)
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return bld->undef;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(bld->type.norm) {
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const char *intrinsic = NULL;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(a == bld->one || b == bld->one)
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return bld->one;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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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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!type.floating && !type.fixed) {
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if(type.width == 8)
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2009-08-03 00:01:27 +01:00
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intrinsic = type.sign ? "llvm.x86.sse2.padds.b" : "llvm.x86.sse2.paddus.b";
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2009-08-02 17:54:53 +01:00
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if(type.width == 16)
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2009-08-03 00:01:27 +01:00
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intrinsic = type.sign ? "llvm.x86.sse2.padds.w" : "llvm.x86.sse2.paddus.w";
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2009-08-02 17:54:53 +01:00
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}
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2009-08-01 17:27:05 +01:00
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#endif
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2009-08-02 17:54:53 +01:00
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if(intrinsic)
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2009-08-07 01:16:59 +01:00
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return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
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2009-08-02 17:54:53 +01:00
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}
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if(LLVMIsConstant(a) && LLVMIsConstant(b))
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res = LLVMConstAdd(a, b);
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else
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res = LLVMBuildAdd(bld->builder, a, b, "");
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if(bld->type.norm && (bld->type.floating || bld->type.fixed))
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res = lp_build_min_simple(bld, res, bld->one);
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return res;
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2009-08-01 17:27:05 +01:00
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}
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LLVMValueRef
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2009-08-02 17:54:53 +01:00
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lp_build_sub(struct lp_build_context *bld,
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2009-08-01 17:27:05 +01:00
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LLVMValueRef a,
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LLVMValueRef b)
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{
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2009-08-02 17:54:53 +01:00
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const union lp_type type = bld->type;
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LLVMValueRef res;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(b == bld->zero)
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return a;
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if(a == bld->undef || b == bld->undef)
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return bld->undef;
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if(a == b)
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return bld->zero;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(bld->type.norm) {
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const char *intrinsic = NULL;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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if(b == bld->one)
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return bld->zero;
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2009-08-01 17:27:05 +01:00
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2009-08-02 17:54:53 +01:00
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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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!type.floating && !type.fixed) {
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if(type.width == 8)
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2009-08-03 00:01:27 +01:00
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intrinsic = type.sign ? "llvm.x86.sse2.psubs.b" : "llvm.x86.sse2.psubus.b";
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2009-08-02 17:54:53 +01:00
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if(type.width == 16)
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2009-08-03 00:01:27 +01:00
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intrinsic = type.sign ? "llvm.x86.sse2.psubs.w" : "llvm.x86.sse2.psubus.w";
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2009-08-02 17:54:53 +01:00
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}
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2009-08-01 17:27:05 +01:00
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#endif
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2009-08-02 17:54:53 +01:00
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if(intrinsic)
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2009-08-07 01:16:59 +01:00
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return lp_build_intrinsic_binary(bld->builder, intrinsic, lp_build_vec_type(bld->type), a, b);
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2009-08-02 17:54:53 +01:00
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}
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if(LLVMIsConstant(a) && LLVMIsConstant(b))
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res = LLVMConstSub(a, b);
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else
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res = LLVMBuildSub(bld->builder, a, b, "");
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if(bld->type.norm && (bld->type.floating || bld->type.fixed))
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res = lp_build_max_simple(bld, res, bld->zero);
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return res;
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2009-08-01 17:27:05 +01:00
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}
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2009-08-03 00:01:27 +01:00
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/**
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* Build shuffle vectors that match PUNPCKLxx and PUNPCKHxx instructions.
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*/
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static LLVMValueRef
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lp_build_unpack_shuffle(unsigned n, unsigned lo_hi)
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{
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LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
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unsigned i, j;
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assert(n <= LP_MAX_VECTOR_LENGTH);
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assert(lo_hi < 2);
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for(i = 0, j = lo_hi*n/2; i < n; i += 2, ++j) {
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elems[i + 0] = LLVMConstInt(LLVMInt32Type(), 0 + j, 0);
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elems[i + 1] = LLVMConstInt(LLVMInt32Type(), n + j, 0);
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}
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return LLVMConstVector(elems, n);
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}
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static LLVMValueRef
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lp_build_const_vec(LLVMTypeRef type, unsigned n, long long c)
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{
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LLVMValueRef elems[LP_MAX_VECTOR_LENGTH];
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unsigned i;
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assert(n <= LP_MAX_VECTOR_LENGTH);
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for(i = 0; i < n; ++i)
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elems[i] = LLVMConstInt(type, c, 0);
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|
|
return LLVMConstVector(elems, n);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Normalized 8bit multiplication.
|
|
|
|
*
|
|
|
|
* - alpha plus one
|
|
|
|
*
|
|
|
|
* makes the following approximation to the division (Sree)
|
|
|
|
*
|
|
|
|
* a*b/255 ~= (a*(b + 1)) >> 256
|
|
|
|
*
|
|
|
|
* which is the fastest method that satisfies the following OpenGL criteria
|
|
|
|
*
|
|
|
|
* 0*0 = 0 and 255*255 = 255
|
|
|
|
*
|
|
|
|
* - geometric series
|
|
|
|
*
|
|
|
|
* takes the geometric series approximation to the division
|
|
|
|
*
|
|
|
|
* t/255 = (t >> 8) + (t >> 16) + (t >> 24) ..
|
|
|
|
*
|
|
|
|
* in this case just the first two terms to fit in 16bit arithmetic
|
|
|
|
*
|
|
|
|
* t/255 ~= (t + (t >> 8)) >> 8
|
|
|
|
*
|
|
|
|
* note that just by itself it doesn't satisfies the OpenGL criteria, as
|
|
|
|
* 255*255 = 254, so the special case b = 255 must be accounted or roundoff
|
|
|
|
* must be used
|
|
|
|
*
|
|
|
|
* - geometric series plus rounding
|
|
|
|
*
|
|
|
|
* when using a geometric series division instead of truncating the result
|
|
|
|
* use roundoff in the approximation (Jim Blinn)
|
|
|
|
*
|
|
|
|
* t/255 ~= (t + (t >> 8) + 0x80) >> 8
|
|
|
|
*
|
|
|
|
* achieving the exact results
|
|
|
|
*
|
|
|
|
* @sa Alvy Ray Smith, Image Compositing Fundamentals, Tech Memo 4, Aug 15, 1995,
|
|
|
|
* ftp://ftp.alvyray.com/Acrobat/4_Comp.pdf
|
|
|
|
* @sa Michael Herf, The "double blend trick", May 2000,
|
|
|
|
* http://www.stereopsis.com/doubleblend.html
|
|
|
|
*/
|
|
|
|
static LLVMValueRef
|
|
|
|
lp_build_mul_u8n(LLVMBuilderRef builder,
|
|
|
|
LLVMValueRef a, LLVMValueRef b)
|
|
|
|
{
|
|
|
|
static LLVMValueRef c01 = NULL;
|
|
|
|
static LLVMValueRef c08 = NULL;
|
|
|
|
static LLVMValueRef c80 = NULL;
|
|
|
|
LLVMValueRef ab;
|
|
|
|
|
|
|
|
if(!c01) c01 = lp_build_const_vec(LLVMInt16Type(), 8, 0x01);
|
|
|
|
if(!c08) c08 = lp_build_const_vec(LLVMInt16Type(), 8, 0x08);
|
|
|
|
if(!c80) c80 = lp_build_const_vec(LLVMInt16Type(), 8, 0x80);
|
|
|
|
|
|
|
|
#if 0
|
|
|
|
|
|
|
|
/* a*b/255 ~= (a*(b + 1)) >> 256 */
|
|
|
|
b = LLVMBuildAdd(builder, b, c01, "");
|
|
|
|
ab = LLVMBuildMul(builder, a, b, "");
|
|
|
|
|
|
|
|
#else
|
|
|
|
|
|
|
|
/* t/255 ~= (t + (t >> 8) + 0x80) >> 8 */
|
|
|
|
ab = LLVMBuildMul(builder, a, b, "");
|
|
|
|
ab = LLVMBuildAdd(builder, ab, LLVMBuildLShr(builder, ab, c08, ""), "");
|
|
|
|
ab = LLVMBuildAdd(builder, ab, c80, "");
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ab = LLVMBuildLShr(builder, ab, c08, "");
|
|
|
|
|
|
|
|
return ab;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-08-01 17:27:05 +01:00
|
|
|
LLVMValueRef
|
2009-08-02 17:54:53 +01:00
|
|
|
lp_build_mul(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a,
|
|
|
|
LLVMValueRef b)
|
2009-08-01 17:27:05 +01:00
|
|
|
{
|
2009-08-03 00:01:27 +01:00
|
|
|
const union lp_type type = bld->type;
|
|
|
|
|
2009-08-02 17:54:53 +01:00
|
|
|
if(a == bld->zero)
|
|
|
|
return bld->zero;
|
|
|
|
if(a == bld->one)
|
2009-08-01 17:27:05 +01:00
|
|
|
return b;
|
2009-08-02 17:54:53 +01:00
|
|
|
if(b == bld->zero)
|
|
|
|
return bld->zero;
|
|
|
|
if(b == bld->one)
|
2009-08-01 17:27:05 +01:00
|
|
|
return a;
|
2009-08-02 17:54:53 +01:00
|
|
|
if(a == bld->undef || b == bld->undef)
|
|
|
|
return bld->undef;
|
2009-08-01 17:27:05 +01:00
|
|
|
|
2009-08-03 00:01:27 +01:00
|
|
|
if(!type.floating && !type.fixed && type.norm) {
|
|
|
|
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
|
|
|
|
if(type.width == 8 && type.length == 16) {
|
|
|
|
LLVMTypeRef i16x8 = LLVMVectorType(LLVMInt16Type(), 8);
|
|
|
|
LLVMTypeRef i8x16 = LLVMVectorType(LLVMInt8Type(), 16);
|
|
|
|
static LLVMValueRef ml = NULL;
|
|
|
|
static LLVMValueRef mh = NULL;
|
|
|
|
LLVMValueRef al, ah, bl, bh;
|
|
|
|
LLVMValueRef abl, abh;
|
|
|
|
LLVMValueRef ab;
|
|
|
|
|
|
|
|
if(!ml) ml = lp_build_unpack_shuffle(16, 0);
|
|
|
|
if(!mh) mh = lp_build_unpack_shuffle(16, 1);
|
|
|
|
|
|
|
|
/* PUNPCKLBW, PUNPCKHBW */
|
|
|
|
al = LLVMBuildShuffleVector(bld->builder, a, bld->zero, ml, "");
|
|
|
|
bl = LLVMBuildShuffleVector(bld->builder, b, bld->zero, ml, "");
|
|
|
|
ah = LLVMBuildShuffleVector(bld->builder, a, bld->zero, mh, "");
|
|
|
|
bh = LLVMBuildShuffleVector(bld->builder, b, bld->zero, mh, "");
|
|
|
|
|
|
|
|
/* NOP */
|
|
|
|
al = LLVMBuildBitCast(bld->builder, al, i16x8, "");
|
|
|
|
bl = LLVMBuildBitCast(bld->builder, bl, i16x8, "");
|
|
|
|
ah = LLVMBuildBitCast(bld->builder, ah, i16x8, "");
|
|
|
|
bh = LLVMBuildBitCast(bld->builder, bh, i16x8, "");
|
|
|
|
|
|
|
|
/* PMULLW, PSRLW, PADDW */
|
|
|
|
abl = lp_build_mul_u8n(bld->builder, al, bl);
|
|
|
|
abh = lp_build_mul_u8n(bld->builder, ah, bh);
|
|
|
|
|
|
|
|
/* PACKUSWB */
|
2009-08-07 01:16:59 +01:00
|
|
|
ab = lp_build_intrinsic_binary(bld->builder, "llvm.x86.sse2.packuswb.128" , i16x8, abl, abh);
|
2009-08-03 00:01:27 +01:00
|
|
|
|
|
|
|
/* NOP */
|
|
|
|
ab = LLVMBuildBitCast(bld->builder, ab, i8x16, "");
|
|
|
|
|
|
|
|
return ab;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
/* FIXME */
|
|
|
|
assert(0);
|
|
|
|
}
|
|
|
|
|
2009-08-02 17:54:53 +01:00
|
|
|
if(LLVMIsConstant(a) && LLVMIsConstant(b))
|
|
|
|
return LLVMConstMul(a, b);
|
|
|
|
|
|
|
|
return LLVMBuildMul(bld->builder, a, b, "");
|
2009-08-01 17:27:05 +01:00
|
|
|
}
|
|
|
|
|
2009-08-02 17:54:53 +01:00
|
|
|
|
2009-08-11 13:09:35 +01:00
|
|
|
LLVMValueRef
|
|
|
|
lp_build_div(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a,
|
|
|
|
LLVMValueRef b)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
|
|
|
|
if(a == bld->zero)
|
|
|
|
return bld->zero;
|
|
|
|
if(a == bld->one)
|
|
|
|
return lp_build_rcp(bld, b);
|
|
|
|
if(b == bld->zero)
|
|
|
|
return bld->undef;
|
|
|
|
if(b == bld->one)
|
|
|
|
return a;
|
|
|
|
if(a == bld->undef || b == bld->undef)
|
|
|
|
return bld->undef;
|
|
|
|
|
|
|
|
if(LLVMIsConstant(a) && LLVMIsConstant(b))
|
|
|
|
return LLVMConstFDiv(a, b);
|
|
|
|
|
|
|
|
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
|
|
|
|
if(type.width == 32 && type.length == 4)
|
|
|
|
return lp_build_mul(bld, a, lp_build_rcp(bld, b));
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return LLVMBuildFDiv(bld->builder, a, b, "");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2009-08-01 17:27:05 +01:00
|
|
|
LLVMValueRef
|
2009-08-02 17:54:53 +01:00
|
|
|
lp_build_min(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a,
|
|
|
|
LLVMValueRef b)
|
2009-08-01 17:27:05 +01:00
|
|
|
{
|
2009-08-02 17:54:53 +01:00
|
|
|
if(a == bld->undef || b == bld->undef)
|
|
|
|
return bld->undef;
|
|
|
|
|
2009-08-03 19:31:56 +01:00
|
|
|
if(a == b)
|
|
|
|
return a;
|
|
|
|
|
2009-08-02 17:54:53 +01:00
|
|
|
if(bld->type.norm) {
|
|
|
|
if(a == bld->zero || b == bld->zero)
|
|
|
|
return bld->zero;
|
|
|
|
if(a == bld->one)
|
|
|
|
return b;
|
|
|
|
if(b == bld->one)
|
|
|
|
return a;
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_min_simple(bld, a, b);
|
2009-08-01 17:27:05 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
2009-08-02 17:54:53 +01:00
|
|
|
lp_build_max(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a,
|
|
|
|
LLVMValueRef b)
|
2009-08-01 17:27:05 +01:00
|
|
|
{
|
2009-08-02 17:54:53 +01:00
|
|
|
if(a == bld->undef || b == bld->undef)
|
|
|
|
return bld->undef;
|
|
|
|
|
2009-08-03 19:31:56 +01:00
|
|
|
if(a == b)
|
|
|
|
return a;
|
|
|
|
|
2009-08-02 17:54:53 +01:00
|
|
|
if(bld->type.norm) {
|
|
|
|
if(a == bld->one || b == bld->one)
|
|
|
|
return bld->one;
|
|
|
|
if(a == bld->zero)
|
|
|
|
return b;
|
|
|
|
if(b == bld->zero)
|
|
|
|
return a;
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_max_simple(bld, a, b);
|
2009-08-01 17:27:05 +01:00
|
|
|
}
|
2009-08-11 13:09:35 +01:00
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_abs(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
|
|
|
|
if(!type.sign)
|
|
|
|
return a;
|
|
|
|
|
|
|
|
/* XXX: is this really necessary? */
|
|
|
|
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
|
|
|
|
if(!type.floating && type.width*type.length == 128) {
|
|
|
|
LLVMTypeRef vec_type = lp_build_vec_type(type);
|
|
|
|
if(type.width == 8)
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.b.128", vec_type, a);
|
|
|
|
if(type.width == 16)
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.w.128", vec_type, a);
|
|
|
|
if(type.width == 32)
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.ssse3.pabs.d.128", vec_type, a);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return lp_build_max(bld, a, LLVMBuildNeg(bld->builder, a, ""));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_sqrt(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
LLVMTypeRef vec_type = lp_build_vec_type(type);
|
|
|
|
const char *intrinsic;
|
|
|
|
|
|
|
|
/* TODO: optimize the constant case */
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
switch(type.width) {
|
|
|
|
case 32:
|
|
|
|
intrinsic = "llvm.sqrt.f32";
|
|
|
|
break;
|
|
|
|
case 64:
|
|
|
|
intrinsic = "llvm.sqrt.f64";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
assert(0);
|
|
|
|
return LLVMGetUndef(vec_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, intrinsic, vec_type, a);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_rcp(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
|
|
|
|
if(a == bld->zero)
|
|
|
|
return bld->undef;
|
|
|
|
if(a == bld->one)
|
|
|
|
return bld->one;
|
|
|
|
if(a == bld->undef)
|
|
|
|
return bld->undef;
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
if(LLVMIsConstant(a))
|
|
|
|
return LLVMConstFDiv(bld->one, a);
|
|
|
|
|
|
|
|
/* XXX: is this really necessary? */
|
|
|
|
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
|
|
|
|
if(type.width == 32 && type.length == 4)
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.sse.rcp.ps", lp_build_vec_type(type), a);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return LLVMBuildFDiv(bld->builder, bld->one, a, "");
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_rsqrt(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
/* XXX: is this really necessary? */
|
|
|
|
#if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
|
|
|
|
if(type.width == 32 && type.length == 4)
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, "llvm.x86.sse.rsqrt.ps", lp_build_vec_type(type), a);
|
|
|
|
#endif
|
|
|
|
|
|
|
|
return lp_build_rcp(bld, lp_build_sqrt(bld, a));
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_cos(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
LLVMTypeRef vec_type = lp_build_vec_type(type);
|
|
|
|
const char *intrinsic;
|
|
|
|
|
|
|
|
/* TODO: optimize the constant case */
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
switch(type.width) {
|
|
|
|
case 32:
|
|
|
|
intrinsic = "llvm.cos.f32";
|
|
|
|
break;
|
|
|
|
case 64:
|
|
|
|
intrinsic = "llvm.cos.f64";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
assert(0);
|
|
|
|
return LLVMGetUndef(vec_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, intrinsic, vec_type, a);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_sin(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
LLVMTypeRef vec_type = lp_build_vec_type(type);
|
|
|
|
const char *intrinsic;
|
|
|
|
|
|
|
|
/* TODO: optimize the constant case */
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
switch(type.width) {
|
|
|
|
case 32:
|
|
|
|
intrinsic = "llvm.sin.f32";
|
|
|
|
break;
|
|
|
|
case 64:
|
|
|
|
intrinsic = "llvm.sin.f64";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
assert(0);
|
|
|
|
return LLVMGetUndef(vec_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_intrinsic_unary(bld->builder, intrinsic, vec_type, a);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
LLVMValueRef
|
|
|
|
lp_build_pow(struct lp_build_context *bld,
|
|
|
|
LLVMValueRef a,
|
|
|
|
LLVMValueRef b)
|
|
|
|
{
|
|
|
|
const union lp_type type = bld->type;
|
|
|
|
LLVMTypeRef vec_type = lp_build_vec_type(type);
|
|
|
|
const char *intrinsic;
|
|
|
|
|
|
|
|
/* TODO: optimize the constant case */
|
|
|
|
|
|
|
|
assert(type.floating);
|
|
|
|
|
|
|
|
switch(type.width) {
|
|
|
|
case 32:
|
|
|
|
intrinsic = "llvm.pow.f32";
|
|
|
|
break;
|
|
|
|
case 64:
|
|
|
|
intrinsic = "llvm.pow.f64";
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
assert(0);
|
|
|
|
return LLVMGetUndef(vec_type);
|
|
|
|
}
|
|
|
|
|
|
|
|
return lp_build_intrinsic_binary(bld->builder, intrinsic, vec_type, a, b);
|
|
|
|
}
|
|
|
|
|