[PATCH] CodeGen: Emit sqrt intrinsic from __builtin_sqrt

[hfinkel at anl.gov]

To play devil's advocate: I don't understand what you're trying to fix here. So the intrinsic has undefined behavior if x < -0.0; that's the definition of our intrinsic.

Regardless, you don't need to insert the extra code if we're in NoNaNs mode.


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  rL LLVM

http://reviews.llvm.org/D8468

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