[PATCH] D49320: [InstCombine] Fold 'check for [no] signed truncation' pattern

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri updated this revision to Diff 156036.
lebedev.ri added a comment.

Operate on `APInt`'s directly, fixes PR38204.

Once this handled non-splats, this will have to not operate on these `APInt`'s,
but operate on `ConstantInt` vectors directly anyway.


Repository:
  rL LLVM

https://reviews.llvm.org/D49320

Files:
  lib/Transforms/InstCombine/InstCombineCompares.cpp
  test/Transforms/InstCombine/canonicalize-lack-of-signed-truncation-check.ll
  test/Transforms/InstCombine/canonicalize-signed-truncation-check.ll

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