From: Vincent Lejeune <vljn@ovi.com>
Date: Tue, 30 Apr 2013 00:14:44 +0000 (+0000)
Subject: R600: Always use texture cache for compute shaders
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=4fb224e3bd7655e25bc1f43d05a0922098aae4e0;p=oota-llvm.git

R600: Always use texture cache for compute shaders

This will improve the performance of memory reads.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180762 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/R600/R600InstrInfo.cpp b/lib/Target/R600/R600InstrInfo.cpp
index 371ffc12f1e..8fd838599f9 100644
--- a/lib/Target/R600/R600InstrInfo.cpp
+++ b/lib/Target/R600/R600InstrInfo.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "R600InstrInfo.h"
+#include "AMDGPU.h"
 #include "AMDGPUSubtarget.h"
 #include "AMDGPUTargetMachine.h"
 #include "R600Defines.h"
@@ -153,7 +154,8 @@ bool R600InstrInfo::usesVertexCache(unsigned Opcode) const {
 }
 
 bool R600InstrInfo::usesVertexCache(const MachineInstr *MI) const {
-  return usesVertexCache(MI->getOpcode());
+  const R600MachineFunctionInfo *MFI = MI->getParent()->getParent()->getInfo<R600MachineFunctionInfo>();
+  return MFI->ShaderType != ShaderType::COMPUTE && usesVertexCache(MI->getOpcode());
 }
 
 bool R600InstrInfo::usesTextureCache(unsigned Opcode) const {
@@ -162,7 +164,9 @@ bool R600InstrInfo::usesTextureCache(unsigned Opcode) const {
 }
 
 bool R600InstrInfo::usesTextureCache(const MachineInstr *MI) const {
-  return usesTextureCache(MI->getOpcode());
+  const R600MachineFunctionInfo *MFI = MI->getParent()->getParent()->getInfo<R600MachineFunctionInfo>();
+  return (MFI->ShaderType == ShaderType::COMPUTE && usesVertexCache(MI->getOpcode())) ||
+         usesTextureCache(MI->getOpcode());
 }
 
 bool