[PATCH] D67199: [InstCombine] Expand the simplification of log()
Dávid Bolvanský via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sun Sep 15 10:11:05 PDT 2019
xbolva00 added a comment.
Please also clang format the parts you modified, otherwise this looks ok.
================
Comment at: llvm/lib/Transforms/Utils/SimplifyLibCalls.cpp:1807
+ Value *MulY = B.CreateFMul(Arg->getArgOperand(1), LogX, "mul");
+ // Since pow() may have side effects, e.g. errno,
+ // dead code elimination may not be trusted to remove it.
----------------
evandro wrote:
> xbolva00 wrote:
> > Can you extract this code and comment to helper function?
> >
> > Can be used also a few lines below.
> Can do, using the existing `LibCallSimplifier::replaceAllUsesWith()` for this purpose.
Thanks
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https://reviews.llvm.org/D67199/new/
https://reviews.llvm.org/D67199
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