commit	a6019d51649973c88dc5953d98a46a964768deb2	[log] [tgz]
author	Sanjay Patel <spatel@rotateright.com>	Mon May 06 20:34:05 2019 +0000
committer	Sanjay Patel <spatel@rotateright.com>	Mon May 06 20:34:05 2019 +0000
tree	65f0732d13f403fa07850245519b622dbd7fc0c7
parent	2d2277f5e7ce8b2836e4a5a393a2c4da26c2e439 [diff]

[InstCombine] sink FP negation of operands through select

We don't always get this:

Cond ? -X : -Y --> -(Cond ? X : Y)

...even with the legacy IR form of fneg in the case with extra uses,
and we miss matching with the newer 'fneg' instruction because we
are expecting binops through the rest of the path.

Differential Revision: https://reviews.llvm.org/D61604

llvm-svn: 360075

llvm/lib/Transforms/InstCombine/InstCombineSelect.cpp[diff]
llvm/test/Transforms/InstCombine/fneg.ll[diff]

2 files changed

tree: 65f0732d13f403fa07850245519b622dbd7fc0c7

clang/
clang-tools-extra/
compiler-rt/
debuginfo-tests/
libclc/
libcxx/
libcxxabi/
libunwind/
lld/
lldb/
llgo/
llvm/
openmp/
parallel-libs/
polly/
pstl/
.arcconfig
.clang-format
.clang-tidy
.gitignore
README.md

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.