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

[Rafael Espíndola]

test?

On 29 April 2013 20:14, Vincent Lejeune <vljn at ovi.com> wrote:
> 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
>
>
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