[PATCH] D133667: [InstCombine] convert mul by negative-pow2 to negate and shift

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 460117.
spatel added a comment.

Patch updated:
No code changes, but rebased after:
73919a87e9a6f8cfa6 <https://reviews.llvm.org/rG73919a87e9a6f8cfa619e297c0c52e0e68f6c532>
...so the motivating test is reduced to remove the multiply and a wide add. We need some other fold to recognize that the wide sub can be narrowed.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D133667/new/

https://reviews.llvm.org/D133667

Files:
  llvm/lib/Transforms/InstCombine/InstCombineMulDivRem.cpp
  llvm/test/Transforms/InstCombine/add.ll
  llvm/test/Transforms/InstCombine/mul.ll

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