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David Green 0582b22f10 [ARM] Don't use the Machine Scheduler for cortex-m at minsize 
The new cortex-m schedule in rL360768 helps performance, but can increase the
amount of high-registers used. This, on average, ends up increasing the
codesize by a fair amount (because less instructions are converted from T2 to
T1). On cortex-m at -Oz, where we are quite size-paranoid, it is better to use
the existing DAG scheduler with the RegPressure scheduling preference (at least
until the issues around T2 vs T1 instructions can be improved).

I have also made sure that the Sched::RegPressure dag scheduler is always
chosen for MinSize.

The test shows one case where we increase the number of registers used.

Differential Revision: https://reviews.llvm.org/D61882

llvm-svn: 360769
 		2019-05-15 12:58:02 +00:00
clang [ASTImporter] Use llvm::Expected and Error in the importer API 2019-05-15 10:29:48 +00:00
clang-tools-extra [clang-tidy] Fix invalid fixit for readability-static-accessed-through-instance (bug 40544) 2019-05-14 18:23:10 +00:00
compiler-rt [libFuzzer] replace string_view with string to fix the bots. This is NFC, just slower. 2019-05-14 22:16:04 +00:00
debuginfo-tests Set config.lit_tools_dir, which is needed by lit.llvm.initialize. 2018-11-06 21:54:27 +00:00
libclc travis: Add LLVM-8 build 2019-03-27 21:28:31 +00:00
libcxx [libc++] [test] Use std::nextafter() instead of std::nexttoward() 2019-05-14 13:56:20 +00:00
libcxxabi minor cmake formatting style fix 2019-05-07 13:14:14 +00:00
libunwind Add a new LIBUNWIND_WEAK_PTHREAD Cmake option to force 2019-05-13 18:45:03 +00:00
lld [LLD][ELF] Add the -z ifunc-noplt option 2019-05-14 15:25:21 +00:00
lldb [lldb] [test] Mark frequently failing flaky tests skipped on NetBSD 2019-05-15 12:13:20 +00:00
llgo IR: Support parsing numeric block ids, and emit them in textual output. 2019-03-22 18:27:13 +00:00
llvm [ARM] Don't use the Machine Scheduler for cortex-m at minsize 2019-05-15 12:58:02 +00:00
openmp [OpenMP][AArch64] Fix compile with LLVM trunk. 2019-05-14 21:44:54 +00:00
parallel-libs Fix typos throughout the license files that somehow I and my reviewers 2019-01-21 09:52:34 +00:00
polly [polly] Fix non-determinism in IslNodeBuilder. 2019-05-14 23:01:19 +00:00
pstl [pstl] Make the default backend be the serial backend and always provide parallel policies 2019-04-24 20:12:36 +00:00
.arcconfig Update monorepo .arcconfig with new project callsign. 2019-01-31 14:34:59 +00:00
.clang-format Add .clang-tidy and .clang-format files to the toplevel of the 2019-01-29 16:43:16 +00:00
.clang-tidy Disable tidy checks with too many hits 2019-02-01 11:20:13 +00:00
.gitignore Add a reduced copy of the llvm .gitignore 2019-04-09 00:52:49 +00:00
README.md
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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.