[PATCH] D91933: [X86] Do not allow FixupSetCC to relax constraints

[Harald van Dijk via Phabricator via llvm-commits]

hvdijk marked an inline comment as done.
hvdijk added inline comments.


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Comment at: llvm/lib/Target/X86/X86FixupSetCC.cpp:104
                                           : &X86::GR32_ABCDRegClass;
-      Register ZeroReg = MRI->createVirtualRegister(RC);
-      Register InsertReg = MRI->createVirtualRegister(RC);
+      if (!MRI->constrainRegClass(ZExt->getOperand(0).getReg(), RC))
+        continue;
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RKSimon wrote:
> Add a comment for this early-out
Sure, done.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D91933/new/

https://reviews.llvm.org/D91933