commit	acb628b2afb4b43dd0224c393f1ff47abd3b9045	[log] [tgz]
author	David Green <david.green@arm.com>	Fri Feb 22 12:23:31 2019 +0000
committer	David Green <david.green@arm.com>	Fri Feb 22 12:23:31 2019 +0000
tree	223e13b3ebc8f61820963caf6736ea99f6fe8218
parent	0cc32dd4a13472702181e41fc17c8161c4999534 [diff]

[ARM] Add some missing thumb1 opcodes to enable peephole optimisation of CMPs

This adds a number of missing Thumb1 opcodes so that the peephole optimiser can
remove redundant CMP instructions.

Reapplying this after the first attempt broke non-thumb1 code as the t2ADDri
instruction can be used with frame indices. In thumb1 we use tADDframe.

Differential Revision: https://reviews.llvm.org/D57833

llvm-svn: 354667

llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp[diff]
llvm/test/CodeGen/ARM/intrinsics-overflow.ll[diff]
llvm/test/CodeGen/Thumb/peephole-cmp.mir[Added - diff]
llvm/test/CodeGen/Thumb2/peephole-cmp.mir[Added - diff]

4 files changed

tree: 223e13b3ebc8f61820963caf6736ea99f6fe8218

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.