[PATCH] D79321: [SLC] Allow llvm.pow(2**n,x) -> llvm.exp2(n*x) even if no exp2 lib func

[Jay Foad via Phabricator via llvm-commits]

foad marked an inline comment as done.
foad added inline comments.


================
Comment at: llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp:1551-1553
       if (Pow->doesNotAccessMemory())
         return B.CreateCall(Intrinsic::getDeclaration(Mod, Intrinsic::exp2, Ty),
                             FMul, "exp2");
----------------
lebedev.ri wrote:
> Was this previously reachable?
Yes whenever we try to optimize a call to the llvm.pow intrinsic on a target that also has the pow libfunc available.


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  https://reviews.llvm.org/D79321/new/

https://reviews.llvm.org/D79321