[PATCH] D28479: [SimplifyLibCalls] pow(x, -0.5) -> 1.0 / sqrt(x)

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


================
Comment at: lib/Transforms/Utils/SimplifyLibCalls.cpp:1089
+
+      return B.CreateFDiv(ConstantFP::get(CI->getType(), 1.0), Sqrt, "sqrtrecip");
+    }
----------------
Missing fast-math flags on sqrt() call and fdiv instruction.


https://reviews.llvm.org/D28479