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AMDGPU: Verify that flat offsets aren't used pre-GFX9

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For convenience the operand is always present in the instruction,
but it isn't valid to use except on GFX9.

llvm-svn: 305200
This commit is contained in:
Matt Arsenault 2017-06-12 16:37:55 +00:00
parent 20d2f0ba58
commit a57541fa02
1 changed files with 11 additions and 2 deletions
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13
lib/Target/AMDGPU/SIInstrInfo.cpp
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@ -2331,11 +2331,12 @@ static bool isSubRegOf(const SIRegisterInfo &TRI,
bool SIInstrInfo::verifyInstruction(const MachineInstr &MI,
StringRef &ErrInfo) const {
uint16_t Opcode = MI.getOpcode();
if (SIInstrInfo::isGenericOpcode(MI.getOpcode()))
return true;
const MachineRegisterInfo &MRI = MI.getParent()->getParent()->getRegInfo();
const MachineFunction *MF = MI.getParent()->getParent();
const MachineRegisterInfo &MRI = MF->getRegInfo();
int Src0Idx = AMDGPU::getNamedOperandIdx(Opcode, AMDGPU::OpName::src0);
int Src1Idx = AMDGPU::getNamedOperandIdx(Opcode, AMDGPU::OpName::src1);
int Src2Idx = AMDGPU::getNamedOperandIdx(Opcode, AMDGPU::OpName::src2);
@ -2565,6 +2566,14 @@ bool SIInstrInfo::verifyInstruction(const MachineInstr &MI,
}
}
if (isFLAT(MI) && !MF->getSubtarget<SISubtarget>().hasFlatInstOffsets()) {
const MachineOperand *Offset = getNamedOperand(MI, AMDGPU::OpName::offset);
if (Offset->getImm() != 0) {
ErrInfo = "subtarget does not support offsets in flat instructions";
return false;
}
}
return true;
}