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Hans Wennborg 7e576e18cc Switch lowering: handle zero-weight branch probabilities 
After r236617, branch probabilities are no longer guaranteed to be >= 1. This
patch makes the swich lowering code handle that correctly, without bumping the
branch weights by 1 which might cause overflow and skews the probabilities.

Covered by @zero_weight_tree in test/CodeGen/X86/switch.ll.

llvm-svn: 236739
2015-05-07 15:47:15 +00:00
autoconf Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
cmake [CMake] Also search for prefixed versions of ld.gold 2015-05-01 11:58:30 +00:00
docs Masked Gather and Scatter intrinsics - updated documentation. 2015-05-07 12:25:11 +00:00
examples [Orc] Reapply r236465 with fixes for the MSVC bots. 2015-05-05 17:37:18 +00:00
include [obj2yaml/yaml2obj] Add SHT_MIPS_ABIFLAGS section support 2015-05-07 15:40:48 +00:00
lib Switch lowering: handle zero-weight branch probabilities 2015-05-07 15:47:15 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
test [obj2yaml/yaml2obj] Add SHT_MIPS_ABIFLAGS section support 2015-05-07 15:40:48 +00:00
tools [obj2yaml/yaml2obj] Add SHT_MIPS_ABIFLAGS section support 2015-05-07 15:40:48 +00:00
unittests YAML: Fix crash in the skip method of KeyValueNode class. 2015-05-06 23:21:29 +00:00
utils Vim: Fix some bugs in llvm indent plugin. 2015-05-04 21:41:25 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Ignore compile_commands.json only at the root of the tree. 2015-03-26 18:55:42 +00:00
CMakeLists.txt [CMake] Updates to llvm-shlib to support overriding exports list and added an option to export all symbols. 2015-04-13 21:29:46 +00:00
CODE_OWNERS.TXT Added Andrey Churbanov as the owner of the OpenMP runtime library code 2015-05-05 20:17:53 +00:00
configure Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
CREDITS.TXT
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +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.