[PATCH] D44367: [InstCombine] peek through FP casts for sign-bit compares (PR36682)

[Sanjay Patel via Phabricator via llvm-commits]

spatel updated this revision to Diff 138088.
spatel added a comment.

Patch updated:
This is only a rebase with the new tests from https://reviews.llvm.org/rL327301 and deleting the redundant ones.

Should we handle x < 1, x > 0, x == 0, and x != 0 in this patch too?


https://reviews.llvm.org/D44367

Files:
  lib/Transforms/InstCombine/InstCombineCompares.cpp
  test/Transforms/InstCombine/cast-int-icmp-eq-0.ll
  test/Transforms/InstCombine/icmp.ll

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