[PATCH] D102574: [InstCombine] Missed optimization for pow(x, y) * pow(x, z) with fast-math

[Sanjay Patel via Phabricator via llvm-commits]

spatel added inline comments.


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Comment at: llvm/test/Transforms/InstCombine/fmul-pow.ll:105
 ; CHECK-LABEL: @pow_ab_reassoc_extra_use(
-; CHECK-NEXT:    [[TMP1:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
-; CHECK-NEXT:    [[MUL:%.*]] = fmul reassoc double [[TMP1]], [[TMP1]]
-; CHECK-NEXT:    call void @use(double [[TMP1]])
+; CHECK-NEXT:    [[POW:%.*]] = call double @llvm.pow.f64(double [[A:%.*]], double [[B:%.*]])
+; CHECK-NEXT:    [[MUL:%.*]] = fmul reassoc double [[POW]], [[POW]]
----------------
Do you know why you are getting this (and similar) test changes? They are cosmetic (value names differ), but I don't see this when testing locally.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D102574/new/

https://reviews.llvm.org/D102574