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R600/SI: Use external symbols for scratch buffer

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We were passing the scratch buffer address to the shaders via user sgprs,
but now we use external symbols and have the driver patch the shader
using reloc information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226586 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard
2015-01-20 17:49:47 +00:00
parent ad7a884efe
commit 6dc4d8f0ed
9 changed files with 92 additions and 82 deletions
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4
lib/Target/R600/SIInstrInfo.cpp
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@@ -482,7 +482,7 @@ void SIInstrInfo::storeRegToStackSlot(MachineBasicBlock &MBB,
.addFrameIndex(FrameIndex)
// Place-holder registers, these will be filled in by
// SIPrepareScratchRegs.
.addReg(AMDGPU::SGPR0_SGPR1, RegState::Undef)
.addReg(AMDGPU::SGPR0_SGPR1_SGPR2_SGPR3, RegState::Undef)
.addReg(AMDGPU::SGPR0, RegState::Undef);
} else {
LLVMContext &Ctx = MF->getFunction()->getContext();
@@ -528,7 +528,7 @@ void SIInstrInfo::loadRegFromStackSlot(MachineBasicBlock &MBB,
.addFrameIndex(FrameIndex)
// Place-holder registers, these will be filled in by
// SIPrepareScratchRegs.
.addReg(AMDGPU::SGPR0_SGPR1, RegState::Undef)
.addReg(AMDGPU::SGPR0_SGPR1_SGPR2_SGPR3, RegState::Undef)
.addReg(AMDGPU::SGPR0, RegState::Undef);
} else {