[PATCH] D107285: [FPEnv][InstSimplify] Enable more folds for constrained fsub

[Kevin P. Neal via Phabricator via llvm-commits]

kpn updated this revision to Diff 375582.
kpn added a comment.

Update for review comments. Instructions that are "maytrap" where a SNaN may be seen must not be eliminated.

I've also added tests for transforms that won't fire due to a lack of IR matcher support. We're going through codepaths we weren't before so we're testing what we weren't before.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107285/new/

https://reviews.llvm.org/D107285

Files:
  llvm/lib/Analysis/InstructionSimplify.cpp
  llvm/test/Transforms/InstSimplify/strictfp-fsub.ll

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