[llvm] r180762 - R600: Always use texture cache for compute shaders

[Vincent Lejeune]

Author: vljn
Date: Mon Apr 29 19:14:44 2013
New Revision: 180762

URL: http://llvm.org/viewvc/llvm-project?rev=180762&view=rev
Log:
R600: Always use texture cache for compute shaders

This will improve the performance of memory reads.

Modified:
    llvm/trunk/lib/Target/R600/R600InstrInfo.cpp

Modified: llvm/trunk/lib/Target/R600/R600InstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/R600/R600InstrInfo.cpp?rev=180762&r1=180761&r2=180762&view=diff
==============================================================================
--- llvm/trunk/lib/Target/R600/R600InstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/R600/R600InstrInfo.cpp Mon Apr 29 19:14:44 2013
@@ -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(unsi
 }
 
 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(uns
 }
 
 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