[PATCH] D110170: [InstCombine] fold cast between shift and mask

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 373972.
spatel added a comment.

Patch updated:
Generalized to be a demanded-bits fold. I added tests ending in 'or' rather than just 'and'. ( https://alive2.llvm.org/ce/z/TfaHnb )
I think we already fold other cases (for example, ending with a left-shift).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D110170/new/

https://reviews.llvm.org/D110170

Files:
  llvm/lib/Transforms/InstCombine/InstCombineSimplifyDemanded.cpp
  llvm/test/Transforms/InstCombine/trunc-demand.ll

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