commit	4b7239ebaca72f2cd92682019fbe0bef5b46cd4e	[log] [tgz]
author	Oliver Stannard <oliver.stannard@linaro.org>	Fri Aug 02 10:23:17 2019 +0000
committer	Oliver Stannard <oliver.stannard@linaro.org>	Fri Aug 02 10:23:17 2019 +0000
tree	9e69d9d57dd2290f21ab73a63cf156a676e4cf36
parent	f6b00c279a5587a25876752a6ecd8da0bed959dc [diff]

[IPRA][ARM] Disable no-CSR optimisation for ARM

This optimisation isn't generally profitable for ARM, because we can
save/restore many registers in the prologue and epilogue using the PUSH
and POP instructions, but mostly use individual LDR/STR instructions for
other spills.

Differential revision: https://reviews.llvm.org/D64910

llvm-svn: 367670

llvm/include/llvm/CodeGen/TargetFrameLowering.h[diff]
llvm/lib/CodeGen/RegUsageInfoCollector.cpp[diff]
llvm/lib/CodeGen/TargetFrameLoweringImpl.cpp[diff]
llvm/lib/Target/ARM/ARMFrameLowering.h[diff]
llvm/test/CodeGen/ARM/ipra-no-csr.ll[Added - diff]

5 files changed

tree: 9e69d9d57dd2290f21ab73a63cf156a676e4cf36

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.