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Mirror of https://github.com/RPCS3/llvm-mirror
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Philip Reames 1bb1df8eb7 Tighten known bits for ctpop based on zero input bits 
This is a cleaned up patch from the one written by John Regehr based on the findings of the Souper superoptimizer.

The basic idea here is that input bits that are known zero reduce the maximum count that the intrinsic could return. We know that the number of bits required to represent a particular count is at most log2(N)+1.

Differential Revision: http://reviews.llvm.org/D13253

llvm-svn: 250338
2015-10-14 22:42:12 +00:00
autoconf Don't use bashism/kshism of test ==. From Kamil Rytarowski. 2015-09-12 16:30:32 +00:00
bindings [bindings] Update Go bindings to DIBuilder 2015-09-06 02:22:15 +00:00
cmake Split -pedantic and -Wno-long-long into two separate flags so libc++ can remove -pedantic 2015-10-13 23:51:58 +00:00
docs Add 'other' in description of extractvalue operands. 2015-10-14 19:10:45 +00:00
examples Make the Kaleidoscope Orc examples -Wdeprecated clean by avoiding copying some AST nodes 2015-10-08 17:22:12 +00:00
include [IDFCalculator] Use DominatorTreeBase instead of DominatorTree 2015-10-14 19:54:24 +00:00
lib Tighten known bits for ctpop based on zero input bits 2015-10-14 22:42:12 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test Tighten known bits for ctpop based on zero input bits 2015-10-14 22:42:12 +00:00
tools [Bugpoint] Use 'CC' instead of 'GCC' for variable naming. 2015-10-14 20:29:54 +00:00
unittests Add - and -= operators to BlockFrequency using saturating arithmetic. 2015-10-12 18:34:00 +00:00
utils [MISched] Python script to check coverage of misched info 2015-10-12 08:50:47 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt [CMake] Make LLVM_VERSION_* variables user definable 2015-10-14 21:50:09 +00:00
CODE_OWNERS.TXT CODE_OWNERS.TXT is supposed to be sorted by surname 2015-09-07 00:41:40 +00:00
configure Don't use bashism/kshism of test ==. From Kamil Rytarowski. 2015-09-12 16:30:32 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in We're actually -Wmissing-field-initializers clean thanks to the cmake 2015-08-07 16:44:47 +00:00
Makefile.rules We're actually -Wmissing-field-initializers clean thanks to the cmake 2015-08-07 16:44:47 +00:00
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
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 documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

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