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Chandler Carruth 728acc9bd9 Flip the new block-placement pass to be on by default. 
This is mostly to test the waters. I'd like to get results from FNT
build bots and other bots running on non-x86 platforms.

This feature has been pretty heavily tested over the last few months by
me, and it fixes several of the execution time regressions caused by the
inlining work by preventing inlining decisions from radically impacting
block layout.

I've seen very large improvements in yacr2 and ackermann benchmarks,
along with the expected noise across all of the benchmark suite whenever
code layout changes. I've analyzed all of the regressions and fixed
them, or found them to be impossible to fix. See my email to llvmdev for
more details.

I'd like for this to be in 3.1 as it complements the inliner changes,
but if any failures are showing up or anyone has concerns, it is just
a flag flip and so can be easily turned off.

I'm switching it on tonight to try and get at least one run through
various folks' performance suites in case SPEC or something else has
serious issues with it. I'll watch bots and revert if anything shows up.

llvm-svn: 154816
2012-04-16 13:49:17 +00:00
autoconf add configure flag --with-default-sysroot 2012-04-16 04:11:45 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake Add InitializeNativeTargetDisassembler function. 2012-03-26 21:56:56 +00:00
docs Documentation fixes to LLVMBuild.html [PR 11563] 2012-04-16 08:42:55 +00:00
examples Switch to a more idiomatic way of silencing unused variable warnings in 2012-02-20 00:02:49 +00:00
include Remove the methods for attaching metadata to instructions/retrieving metadata 2012-04-16 13:44:35 +00:00
lib Flip the new block-placement pass to be on by default. 2012-04-16 13:49:17 +00:00
projects Fix a problem in the target detection for Debian GNU/HURD 2012-04-05 19:34:15 +00:00
runtime Use the correct filename for the error message. 2012-03-28 02:39:06 +00:00
test Flip the new block-placement pass to be on by default. 2012-04-16 13:49:17 +00:00
tools Add -disassemble support for -show-inst and -show-encode capability llvm-mc. Also refactor so all MC paraphernalia are created once for all uses as much as possible. 2012-04-16 11:32:10 +00:00
unittests Add the MDBuilder helper class for conveniently creating metadata. 2012-04-15 18:03:49 +00:00
utils Remove old code to strip out unwanted PPC slices for Apple llvmCore. 2012-04-13 22:58:53 +00:00
.gitignore git: Add tools/lldb to the ignore list. 2011-11-10 22:55:50 +00:00
CMakeLists.txt Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
configure add configure flag --with-default-sysroot 2012-04-16 04:11:45 +00:00
CREDITS.TXT Add credit and release notes for r150307. By Kai Nacke. 2012-04-16 05:24:52 +00:00
LICENSE.TXT Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile Makefile: add missing files to FilesToConfig 2012-01-17 02:56:49 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add profiling support for Intel Parallel Amplifier XE (VTune) for JITted code in LLVM. 2012-03-13 08:33:15 +00:00
Makefile.rules Fix the build under Debian GNU/Hurd. 2012-04-11 15:35:36 +00:00
README.txt test commit 2012-03-20 13:12:38 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.