[PATCH] D49222: [InstCombine]add testcases for folding more SPFofSPF pattern

[ChenZheng via Phabricator via llvm-commits]

shchenz created this revision.
shchenz added reviewers: spatel, echristo, nemanjai.

This is from https://reviews.llvm.org/D48754.

Since we can recognize more negative operand pairs in function isKnownNegation() in https://reviews.llvm.org/D49216, we can recognize more abs pattern.

These are test cases for later patch which recognizes more ABS pattern and so we can have more SPFofSPF optimization opportunities.


https://reviews.llvm.org/D49222

Files:
  llvm/test/Transforms/InstCombine/abs_abs.ll

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