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Fork of llvm with experimental commits and workarounds for RPCS3
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Chandler Carruth 2817fc1e53 Fix ValueTracking to conclude that debug intrinsics are safe to 
speculate. Without this, loop rotate (among many other places) would
suddenly stop working in the presence of debug info. I found this
looking at loop rotate, and have augmented its tests with a reduction
out of a very hot loop in yacr2 where failing to do this rotation costs
sometimes more than 10% in runtime performance, perturbing numerous
downstream optimizations.

This should have no impact on performance without debug info, but the
change in performance when debug info is enabled can be extreme. As
a consequence (and this how I got to this yak) any profiling of
performance problems should be treated with deep suspicion -- they may
have been wildly innacurate of debug info was enabled for profiling. =/
Just a heads up.

llvm-svn: 154263
2012-04-07 19:22:18 +00:00
autoconf Fix a problem in the target detection for Debian GNU/HURD 2012-04-05 19:34:15 +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 Target/X86/MCTargetDesc/X86MCAsmInfo.cpp: Enable DwarfCFI (aka DW2) on Cygming. 2012-04-07 02:24:20 +00:00
examples Switch to a more idiomatic way of silencing unused variable warnings in 2012-02-20 00:02:49 +00:00
include Refactor: Use positive field names in VectorizeConfig. 2012-04-07 03:56:23 +00:00
lib Fix ValueTracking to conclude that debug intrinsics are safe to 2012-04-07 19:22:18 +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 Fix ValueTracking to conclude that debug intrinsics are safe to 2012-04-07 19:22:18 +00:00
tools The internalize pass can be dangerous for LTO. 2012-04-05 21:26:44 +00:00
unittests Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
utils Do not include multiple -arch options in CPPFLAGS. 2012-04-05 00:35:55 +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 Fix a problem in the target detection for Debian GNU/HURD 2012-04-05 19:34:15 +00:00
CREDITS.TXT sort by alpha. 2012-03-12 21:12:59 +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
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 Use a posix compliant regexp in export file construction. 2012-03-12 20:58:14 +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.