[PATCH] D28237: InstCombine: fdiv -x, -y -> fdiv x, y

[David Majnemer via Phabricator via llvm-commits]

majnemer added inline comments.


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Comment at: test/Transforms/InstCombine/fdiv.ll:62-69
+; CHECK-LABEL @fdiv_fneg_fneg_fast(
+; CHECK: %div = fdiv fast float %x, %y
+define float @fdiv_fneg_fneg_fast(float %x, float %y) {
+  %x.fneg = fsub float -0.0, %x
+  %y.fneg = fsub float -0.0, %y
+  %div = fdiv fast float %x.fneg, %y.fneg
+  ret float %div
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arsenm wrote:
> majnemer wrote:
> > This test does not provide additional coverage.
> This checks that the fast math falls are preserved
Ah, right...


https://reviews.llvm.org/D28237