[PATCH] D84597: [ConstantFolding] Fold freeze if it is never undef or poison

[Nikita Popov via Phabricator via llvm-commits]

nikic accepted this revision.
nikic added a comment.
This revision is now accepted and ready to land.

LGTM



================
Comment at: llvm/lib/Analysis/ConstantFolding.cpp:1073
+  case Instruction::Freeze:
+    return isGuaranteedNotToBeUndefOrPoison(Ops[0]) ? Ops[0] : nullptr;
   case Instruction::ICmp:
----------------
I'd move this below the llvm_unreachable case for compares.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D84597/new/

https://reviews.llvm.org/D84597