commit	6bf861597c87d708336c6ed36678d91b75d1043c	[log] [tgz]
author	Max Kazantsev <max.kazantsev@azul.com>	Tue Feb 12 07:48:07 2019 +0000
committer	Max Kazantsev <max.kazantsev@azul.com>	Tue Feb 12 07:48:07 2019 +0000
tree	f09289902767e5888de59b39314d56f1ce83c55e
parent	4390c721cba09597037578100948bbc83cc41b16 [diff]

[LoopSimplifyCFG] Pay respect to LCSSA when removing dead blocks

Utility function that we use for blocks deletion always unconditionally removes
one-input Phis. In LoopSimplifyCFG, it can lead to breach of LCSSA form.
This patch alters this function to keep them if needed.

Differential Revision: https://reviews.llvm.org/D57231
Reviewed By: fedor.sergeev

llvm-svn: 353803

llvm/lib/Transforms/Scalar/LoopSimplifyCFG.cpp[diff]
llvm/test/Transforms/LoopSimplifyCFG/lcssa.ll[diff]

2 files changed

tree: f09289902767e5888de59b39314d56f1ce83c55e

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
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.