[PATCH] D117508: [SDAG] add demanded bits transform for bswap

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 400637.
spatel marked an inline comment as done.
spatel added a comment.

Patch updated:

1. Removed unnecessary shift amount type-checks.
2. Added shift operation legality check (MSP430 tests fail without that).


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D117508/new/

https://reviews.llvm.org/D117508

Files:
  llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
  llvm/test/CodeGen/AArch64/bswap-known-bits.ll
  llvm/test/CodeGen/X86/combine-bswap.ll

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