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Michael Kuperstein 5e343e6fd0 [X86] Improve a dag-combine that handles a vector extract -> zext sequence.
The current DAG combine turns a sequence of extracts from <4 x i32> followed by zexts into a store followed by scalar loads.
According to measurements by Martin Krastev (see PR 21269) for x86-64, a sequence of an extract, movs and shifts gives better performance. However, for 32-bit x86, the previous sequence still seems better.

Differential Revision: http://reviews.llvm.org/D6501

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223360 91177308-0d34-0410-b5e6-96231b3b80d8
2014-12-04 13:49:51 +00:00
autoconf Expose LLVM version string via macro in llvm-config.h, and modify Go bindings 2014-11-19 03:34:17 +00:00
bindings Add bindings for the rest of the MCJIT options that we previously 2014-12-02 21:09:01 +00:00
cmake [OCaml] [cmake] Disable OCaml bindings if ctypes >=0.3 is not found. 2014-12-03 03:39:01 +00:00
docs Minor typo and link fixes for Statepoint documentation 2014-12-04 00:45:23 +00:00
examples ExceptionDemo: Let setMCJITMemoryManager() take unique_ptr, since r223183. 2014-12-03 02:05:51 +00:00
include Masked Load / Store Intrinsics - the CodeGen part. 2014-12-04 09:40:44 +00:00
lib [X86] Improve a dag-combine that handles a vector extract -> zext sequence. 2014-12-04 13:49:51 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test [X86] Improve a dag-combine that handles a vector extract -> zext sequence. 2014-12-04 13:49:51 +00:00
tools Add mach-o LC_RPATH support to llvm-objdump 2014-12-04 07:37:02 +00:00
unittests Silencing several "multiple copy constructors" warnings from MSVC; NFC. 2014-12-03 14:44:16 +00:00
utils test-release.sh: Correct the logged configure command to match the one actually issued. 2014-12-04 11:00:09 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
CMakeLists.txt [OCaml] [cmake] Add CMake buildsystem for OCaml. 2014-12-01 19:50:23 +00:00
CODE_OWNERS.TXT Add Tom Stellard's role as 3.5 release manager. 2014-09-12 08:07:31 +00:00
configure Expose LLVM version string via macro in llvm-config.h, and modify Go bindings 2014-11-19 03:34:17 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
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 Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

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

This directory and its subdirectories contain source code for the Low Level
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