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Mirror of https://github.com/RPCS3/llvm-mirror
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Cong Hou 0b6d5e284f Add a flag vectorizer-maximize-bandwidth in loop vectorizer to enable using larger vectorization factor. 
To be able to maximize the bandwidth during vectorization, this patch provides a new flag vectorizer-maximize-bandwidth. When it is turned on, the vectorizer will determine the vectorization factor (VF) using the smallest instead of widest type in the loop. To avoid increasing register pressure too much, estimates of the register usage for different VFs are calculated so that we only choose a VF when its register usage doesn't exceed the number of available registers.

This is the second attempt to submit this patch. The first attempt got a test failure on ARM. This patch is updated to try to fix the failure (more specifically, by handling the case when VF=1).

Differential revision: http://reviews.llvm.org/D8943

llvm-svn: 251850
2015-11-02 22:53:48 +00:00
autoconf Don't use bashism/kshism of test ==. From Kamil Rytarowski. 2015-09-12 16:30:32 +00:00
bindings [OCaml] Expose Llvm.{set_,}unnamed_addr. 2015-10-21 17:43:02 +00:00
cmake Revert parts accidentally included in r251823 2015-11-02 20:05:54 +00:00
docs docs: document x mangling in LangRef 2015-10-25 20:39:35 +00:00
examples [JIT/Examples] Fix Fibonacci so that it runs again. 2015-10-17 06:36:46 +00:00
include Revert "Support for ThinLTO function importing and symbol linking." 2015-11-02 22:17:32 +00:00
lib Add a flag vectorizer-maximize-bandwidth in loop vectorizer to enable using larger vectorization factor. 2015-11-02 22:53:48 +00:00
projects [CMake] Disable adding the test suite as a projects subdirectory 2015-10-28 18:36:56 +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 Add a flag vectorizer-maximize-bandwidth in loop vectorizer to enable using larger vectorization factor. 2015-11-02 22:53:48 +00:00
tools Revert "Support for ThinLTO function importing and symbol linking." 2015-11-02 22:17:32 +00:00
unittests [Support] Extend sys::path with user_cache_directory function. 2015-11-02 09:49:17 +00:00
utils lit: Add '-a' option to display commands+output of all tests 2015-11-02 16:13:46 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.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] Get rid of LLVM_DYLIB_EXPORT_ALL, and make it the default, add libLLVM-C on darwin to cover the C API needs. 2015-10-27 16:02:04 +00:00
CODE_OWNERS.TXT Add myself as the the code owner for the AVR backend 2015-10-28 00:24:54 +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 [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
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.