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Sanjay Patel 8a5018320c [InstCombine] fold bitcasts around an extractelement 
Example:
  bitcast (extractelement (bitcast <2 x float> %X to <2 x i32>), 1) to float
    --->
  extractelement <2 x float> %X, i32 1

This is part of fixing PR25543:
https://llvm.org/bugs/show_bug.cgi?id=25543

The next step will be to generalize this fold:
trunc ( lshr ( bitcast X) ) -> extractelement (X)

Ie, I'm hoping to replace the existing transform of:
bitcast ( trunc ( lshr ( bitcast X)))
added by:
http://reviews.llvm.org/rL112232

with 2 less specific transforms to catch the case in the bug report.

Differential Revision: http://reviews.llvm.org/D14879

llvm-svn: 255124
2015-12-09 16:17:20 +00:00
autoconf [autoconf] Fix MinGW build 2015-11-28 00:54:12 +00:00
bindings Fix llvm-config to adapt to the install environment. 2015-11-09 23:15:38 +00:00
cmake [CMake] Ignore externalizing debuginfo for unit tests 2015-12-08 21:51:48 +00:00
docs Update doc for C++ TLS calling convention. 2015-12-07 21:40:09 +00:00
examples [Orc] Fix Kaleidoscope example for change in r254693. 2015-12-04 02:32:32 +00:00
include Change hasUniqueInitializer() to call isStrongDefinitionForLinker() instead of !isWeakForLinker() 2015-12-09 16:17:07 +00:00
lib [InstCombine] fold bitcasts around an extractelement 2015-12-09 16:17:20 +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 [InstCombine] fold bitcasts around an extractelement 2015-12-09 16:17:20 +00:00
tools Fix the order of destructors in LibLTOCodeGenerator 2015-12-09 03:37:51 +00:00
unittests Return a std::unique_ptr from CloneModule. NFC. 2015-12-08 23:57:17 +00:00
utils Use make_range to reduce mentions of iterator type. NFC 2015-12-06 05:08:07 +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 adding readability-identifier-naming to llvm clang-tidy configuration. 2015-12-08 17:44:51 +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] Add option LLVM_EXTERNALIZE_DEBUGINFO 2015-12-03 18:45:39 +00:00
CODE_OWNERS.TXT Friendly takeover of the Hexagon backend 2015-12-03 17:07:12 +00:00
configure [autoconf] Fix MinGW build 2015-11-28 00:54:12 +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 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 We're actually -Wmissing-field-initializers clean thanks to the cmake 2015-08-07 16:44:47 +00:00
Makefile.rules Create Makefile variables for 'share' and 'libexec' 2015-11-09 16:10:00 +00:00
README.txt Test commit after password reset 2015-11-11 19:24:08 +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 are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.