commit: 57c3d4bed3ee625e548154063e9f6e7ea70d6ed4
[log]
author: Brendon Cahoon <bcahoon@quicinc.com>
Thu Apr 11 21:57:51 2019 +0000
committer: Brendon Cahoon <bcahoon@quicinc.com>
Thu Apr 11 21:57:51 2019 +0000
tree: b78a6c442e37abae82f78d3e3bb61f65a8259434
parent: 20118355aa6c517327bbd116a8b69e53999f8232 [diff]

[Pipeliner] Fix incorrect loop carried dependence calculation

The isLoopCarriedDep function does not correctly compute loop
carried dependences when the array index offset is negative
or the stride is smallar than the access size.

Patch by Denis Antrushin.

Differential Revision: https://reviews.llvm.org/D60135

llvm-svn: 358233

llvm/lib/CodeGen/MachinePipeliner.cpp[diff]
llvm/test/CodeGen/Hexagon/swp-carried-dep1.mir[Added - diff]
llvm/test/CodeGen/Hexagon/swp-carried-dep2.mir[Added - diff]
llvm/test/CodeGen/Hexagon/swp-epilog-phi8.ll[diff]

4 files changed

tree: b78a6c442e37abae82f78d3e3bb61f65a8259434

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.