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Benjamin Kramer fff2517edc Reimplement CTPOP legalization with the "best" algorithm from 
http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetParallel

In a silly microbenchmark on a 65 nm core2 this is 1.5x faster than the old
code in 32 bit mode and about 2x faster in 64 bit mode. It's also a lot shorter,
especially when counting 64 bit population on a 32 bit target.

I hope this is fast enough to replace Kernighan-style counting loops even when
the input is rather sparse.

llvm-svn: 123547
 		2011-01-15 20:30:30 +00:00
..
autoconf autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
bindings Fix OCaml bindings crash, PR8847. 2010-12-23 15:49:26 +00:00
cmake Make config.h.cmake similar to config.h.in 2011-01-15 13:35:37 +00:00
docs Add a clarification about merging constants with and without unnamed_addr. 2011-01-15 08:20:57 +00:00
examples Do not re-test for the existence of pthread.h. 2010-12-23 21:27:22 +00:00
include Support/PathV2: Implement get_magic. 2011-01-15 18:52:33 +00:00
lib Reimplement CTPOP legalization with the "best" algorithm from 2011-01-15 20:30:30 +00:00
projects Regen configure 2010-12-12 21:42:01 +00:00
runtime Rename 'libprofile/exported_symbols.lst' to 'libprofile/libprofile.exports'. 2010-09-03 15:42:45 +00:00
test Make constmerge a two-pass algorithm so that it won't miss merging 2011-01-15 18:14:21 +00:00
tools Fix memory leak found by clang static analyzer. 2011-01-14 22:34:17 +00:00
unittests Unittests/Support/Path: Tweak test. 2011-01-15 18:52:49 +00:00
utils Fix some tablegen issues to allow using zero_reg for InstAlias definitions. 2011-01-14 22:58:09 +00:00
website
…
.gitignore Cleanup and document .gitignore. 2010-12-17 17:22:50 +00:00
CMakeLists.txt Add to the CMake build some options and platform tests supported by 2011-01-11 12:31:54 +00:00
CREDITS.TXT Another git svn dcommit test. This time let's hope it doesn't kill my repo. 2010-12-10 14:45:10 +00:00
LICENSE.TXT
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Makefile Merge System into Support. 2010-11-29 18:16:10 +00:00
Makefile.common
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Makefile.config.in autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
Makefile.rules build: Shared libraries shouldn't used RPATH on Darwin, only main executables 2010-12-08 02:29:26 +00:00
ModuleInfo.txt Remove trailing space. This is just an excuse to poke the 2010-10-05 20:32:15 +00:00
README.txt Undoing test commit blank space. 2010-09-29 17:39:29 +00:00
build-for-llvm-top.sh
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configure autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
llvm.spec.in
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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.