[PATCH] D25943: [InstCombine] re-use bitcasted compare operands in selects (PR28001)

[Sanjay Patel via llvm-commits]

spatel created this revision.
spatel added reviewers: majnemer, efriedma, nhaehnle.
spatel added a subscriber: llvm-commits.
Herald added a subscriber: mcrosier.

These mixed bitcast patterns show up with SSE/AVX intrinsics because we bitcast function parameters to <2 x i64>.

The bitcasts obfuscate the expected min/max forms as shown in PR28001:
https://llvm.org/bugs/show_bug.cgi?id=28001#c6


https://reviews.llvm.org/D25943

Files:
  lib/Transforms/InstCombine/InstCombineSelect.cpp
  test/Transforms/InstCombine/minmax-fold.ll

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