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AMDGPU: Add new subtarget features for gfx9 flat instructions

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Flat instructions gain an immediate offset, and 2 new
sets of segment specific flat instructions are added.

llvm-svn: 302729
This commit is contained in:
Matt Arsenault 2017-05-10 21:19:05 +00:00
parent 530bc4ac68
commit d3375cc250
3 changed files with 38 additions and 1 deletions
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21
lib/Target/AMDGPU/AMDGPU.td
View File

@ -61,6 +61,24 @@ def FeatureFlatAddressSpace : SubtargetFeature<"flat-address-space",
"Support flat address space"
>;
def FeatureFlatInstOffsets : SubtargetFeature<"flat-inst-offsets",
"FlatInstOffsets",
"true",
"Flat instructions have immediate offset addressing mode"
>;
def FeatureFlatGlobalInsts : SubtargetFeature<"flat-global-insts",
"FlatGlobalInsts",
"true",
"Have global_* flat memory instructions"
>;
def FeatureFlatScratchInsts : SubtargetFeature<"flat-scratch-insts",
"FlatScratchInsts",
"true",
"Have scratch_* flat memory instructions"
>;
def FeatureUnalignedBufferAccess : SubtargetFeature<"unaligned-buffer-access",
"UnalignedBufferAccess",
"true",
@ -407,7 +425,8 @@ def FeatureGFX9 : SubtargetFeatureGeneration<"GFX9",
FeatureGCN3Encoding, FeatureCIInsts, Feature16BitInsts,
FeatureSMemRealTime, FeatureScalarStores, FeatureInv2PiInlineImm,
FeatureApertureRegs, FeatureGFX9Insts, FeatureVOP3P, FeatureVGPRIndexMode,
FeatureFastFMAF32, FeatureDPP
FeatureFastFMAF32, FeatureDPP,
FeatureFlatInstOffsets, FeatureFlatGlobalInsts, FeatureFlatScratchInsts
]
>;

3
lib/Target/AMDGPU/AMDGPUSubtarget.cpp
View File

@ -125,6 +125,9 @@ AMDGPUSubtarget::AMDGPUSubtarget(const Triple &TT, StringRef GPU, StringRef FS,
HasSDWA(false),
HasDPP(false),
FlatAddressSpace(false),
FlatInstOffsets(false),
FlatGlobalInsts(false),
FlatScratchInsts(false),
R600ALUInst(false),
CaymanISA(false),

15
lib/Target/AMDGPU/AMDGPUSubtarget.h
View File

@ -145,6 +145,9 @@ protected:
bool HasSDWA;
bool HasDPP;
bool FlatAddressSpace;
bool FlatInstOffsets;
bool FlatGlobalInsts;
bool FlatScratchInsts;
bool R600ALUInst;
bool CaymanISA;
bool CFALUBug;
@ -380,6 +383,18 @@ public:
return FlatAddressSpace;
}
bool hasFlatInstOffsets() const {
return FlatInstOffsets;
}
bool hasFlatGlobalInsts() const {
return FlatGlobalInsts;
}
bool hasFlatScratchInsts() const {
return FlatScratchInsts;
}
bool isMesaKernel(const MachineFunction &MF) const {
return isMesa3DOS() && !AMDGPU::isShader(MF.getFunction()->getCallingConv());
}