[PATCH] D28484: SimplifyLibCalls: Replace more unary libcalls with intrinsics

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

For anyone else following along with a copy of IEEE 754, this is the roundToIntegral* family of functions.

Aren't llvm.rint() and llvm.nearbyint() precisely equivalent?  We should probably get rid of llvm.rint()... (we can add it back once we actually start modeling FP exceptions).



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Comment at: test/Transforms/InstCombine/win-math.ll:273
     %3 = fptrunc double %2 to float
     ret float %3
 }
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Windows doesn't have round()?  Weird.


https://reviews.llvm.org/D28484