[PATCH] D36498: [InstCombine] Teach foldSelectICmpAnd to recognize a (icmp slt trunc X, 0) and (icmp sgt trunc X, -1) as equivalent to an and with the sign bit of the truncated type

[Craig Topper via Phabricator via llvm-commits]

craig.topper updated this revision to Diff 111410.
craig.topper added a comment.

Rebasing this on top of https://reviews.llvm.org/D36781 which fixes the ashr transform for vectors.


https://reviews.llvm.org/D36498

Files:
  lib/Transforms/InstCombine/InstCombineSelect.cpp
  test/Transforms/InstCombine/select-with-bitwise-ops.ll

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