[PATCH] D117844: [AMDGPU] Prevent aliasing of SrcC and Dst in MAI

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


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Comment at: llvm/lib/Target/AMDGPU/SIInstrInfo.cpp:8279-8283
+  Register Reg = SrcC->getReg();
+  const SIRegisterInfo *TRI = ST.getRegisterInfo();
+  const MachineRegisterInfo &MRI = MI.getMF()->getRegInfo();
+  const TargetRegisterClass *RC = TRI->getRegClassForReg(MRI, Reg);
+  return RC->MC->getSizeInBits() > 128;
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This is all static information, so can't you just set earlyclobber on the operand definition?


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D117844/new/

https://reviews.llvm.org/D117844