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AMDGPU: Fix getMemOpBaseRegImmOfs for flat with offsets

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llvm-svn: 308762
This commit is contained in:
Matt Arsenault
2017-07-21 18:06:36 +00:00
parent 3ad0d01e9e
commit 37a58e03c7
1 changed files with 13 additions and 3 deletions
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16
llvm/lib/Target/AMDGPU/SIInstrInfo.cpp
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@@ -305,9 +305,19 @@ bool SIInstrInfo::getMemOpBaseRegImmOfs(MachineInstr &LdSt, unsigned &BaseReg,
}
if (isFLAT(LdSt)) {
const MachineOperand *AddrReg = getNamedOperand(LdSt, AMDGPU::OpName::vaddr);
BaseReg = AddrReg->getReg();
Offset = 0;
const MachineOperand *VAddr = getNamedOperand(LdSt, AMDGPU::OpName::vaddr);
if (VAddr) {
// Can't analyze 2 offsets.
if (getNamedOperand(LdSt, AMDGPU::OpName::saddr))
return false;
BaseReg = VAddr->getReg();
} else {
// scratch instructions have either vaddr or saddr.
BaseReg = getNamedOperand(LdSt, AMDGPU::OpName::saddr)->getReg();
}
Offset = getNamedOperand(LdSt, AMDGPU::OpName::offset)->getImm();
return true;
}