[PATCH] D50332: AMDGPU: Turn class x, p_zero|n_zero into fcmp oeq x, 0

[Matt Arsenault via Phabricator via llvm-commits]

arsenm added inline comments.


================
Comment at: lib/Transforms/InstCombine/InstCombineCalls.cpp:3266
+      Value *FCmp = Builder.CreateFCmpOEQ(
+        Src0, ConstantFP::get(Src0->getType(), 0.0));
+
----------------
rampitec wrote:
> Is it really true for -0?
Yes, -0.0 and 0.0 compare equal


https://reviews.llvm.org/D50332