[PATCH] D83985: [SimplifyCFG] Fix crash in the EXPENSIVE_CHECKS build

[Jon Roelofs via Phabricator via llvm-commits]

jroelofs created this revision.
jroelofs added reviewers: lebedev.ri, serge-sans-paille.
Herald added subscribers: llvm-commits, hiraditya.
Herald added a project: LLVM.

SimplifyCFG was incorrectly reporting to the pass manager that it had not made changes after folding away a PHI. This is detected in the `EXPENSIVE_CHECKS` build when the function's hash changes.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D83985

Files:
  llvm/lib/Transforms/Utils/SimplifyCFG.cpp
  llvm/test/Transforms/SimplifyCFG/two-entry-phi-fold-crash.ll

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