[PATCH] D152112: [TypePromotion] Don't treat bitcast as a Source

[Dave Green via Phabricator via llvm-commits]

dmgreen updated this revision to Diff 529540.
dmgreen added a comment.

I've limited bitcasts to only when the input and output types are the same, in order to capture constants but leave other bitcasts alone. This prevents v8i1->i8 bitcasts being promoted. (Also half->i16 but I didn't see those causing a problem, and ptrs will be too large to be promoted).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152112/new/

https://reviews.llvm.org/D152112

Files:
  llvm/lib/CodeGen/TypePromotion.cpp
  llvm/test/Transforms/TypePromotion/AArch64/bitcast.ll
  llvm/test/Transforms/TypePromotion/ARM/casts.ll

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