[PATCH] D44147: [InstCombine] Fold add/sub over phi node

[Hiroshi Inoue via Phabricator via llvm-commits]

inouehrs added a comment.

So far, I disabled this optimization for Hexagon since this patch affects Hexagon loop idiom recognition (test/CodeGen/Hexagon/loop-idiom/pmpy-mod.ll).
Should I add a flag in backend to control this optimization rather than explicitly checking the triple in this method?


https://reviews.llvm.org/D44147