[PATCH] D111085: [FPEnv][InstSimplify] Fold constrained X + -0.0 ==> X
Kevin P. Neal via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Oct 4 11:50:15 PDT 2021
kpn created this revision.
kpn added reviewers: sepavloff, spatel, lebedev.ri, nlopes.
kpn requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.
Currently the fadd optimizations in InstSimplify don't know how to do this "X + -0.0 ==> X" fold when using the constrained intrinsics. This adds the support.
This review is derived from D106362 <https://reviews.llvm.org/D106362> with some improvements from D107285 <https://reviews.llvm.org/D107285>. I was asked to make a new, smaller version of D106362 <https://reviews.llvm.org/D106362>.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D111085
Files:
llvm/include/llvm/IR/FPEnv.h
llvm/lib/Analysis/InstructionSimplify.cpp
llvm/test/Transforms/InstSimplify/strictfp-fadd.ll
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