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Nadav Rotem 4bf6326d08 LoopVectorize: Implement partial loop unrolling when vectorization is not profitable. 
This patch enables unrolling of loops when vectorization is legal but not profitable.
We add a new class InnerLoopUnroller, that extends InnerLoopVectorizer and replaces some of the vector-specific logic with scalars.

This patch does not introduce any runtime regressions and improves the following workloads:

SingleSource/Benchmarks/Shootout/matrix -22.64%
SingleSource/Benchmarks/Shootout-C++/matrix -13.06%
External/SPEC/CINT2006/464_h264ref/464_h264ref  -3.99%
SingleSource/Benchmarks/Adobe-C++/simple_types_constant_folding -1.95%



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189281 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-26 22:33:26 +00:00
autoconf Autoconf: The Clang ARC migrator now depends on the static analyzer. 2013-08-22 15:49:53 +00:00
bindings
cmake [cmake] Check for realpath availability in CMake 2013-08-26 18:11:25 +00:00
docs Include a clearer policy about what's ok/nok to speed up code reviews. 2013-08-26 07:29:08 +00:00
examples ExceptionDemo.cpp: Tweak a @param. [-Wdocumentation] 2013-07-29 11:03:50 +00:00
include [cmake] Check for realpath availability in CMake 2013-08-26 18:11:25 +00:00
lib LoopVectorize: Implement partial loop unrolling when vectorization is not profitable. 2013-08-26 22:33:26 +00:00
projects Port the detection of zlib from the main autoconf system to the sample 2013-08-18 01:55:15 +00:00
runtime Use @rpath for libraries rather than @executable_path on OSX. 2013-08-02 01:51:52 +00:00
test LoopVectorize: Implement partial loop unrolling when vectorization is not profitable. 2013-08-26 22:33:26 +00:00
tools llvm-symbolizer: use real path when looking for debug binary location 2013-08-26 18:12:03 +00:00
unittests [Win32] mapped_file_region: Fix a bug in CreateFileMapping() that Size must contain Offset when Offset >= 65536. 2013-08-22 15:14:53 +00:00
utils Add function attribute 'optnone'. 2013-08-23 11:53:55 +00:00
.arcconfig
.gitignore
CMakeLists.txt CMake: move lto.h install to tools/lto/CMakeLists.txt 2013-08-26 16:54:12 +00:00
CODE_OWNERS.TXT
configure configure: Regenerate corresponding to r189026. 2013-08-22 16:31:34 +00:00
CREDITS.TXT Test commit. 2013-08-16 18:09:06 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile Fix regular expression used by 'make update' to only look for 'I' and '?' at the start of svn info results and to check for spaces after 'I' instead of just after '?'. 2013-07-03 14:48:37 +00:00
Makefile.common
Makefile.config.in
Makefile.rules Makefile.rules: Avoid -fomit-frame-pointer also on cygwin due to PR14646. 2013-08-18 03:38:40 +00:00
README.txt

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