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Simon Pilgrim 2320894e4e [X86][SSE] Enable target shuffle combining to combine multiple shuffle inputs. 
We currently only support combining target shuffles that consist of a single source input (plus elements known to be undef/zero).

This patch generalizes the recursive combining of the target shuffle to collect all the inputs, merging any duplicates along the way, into a full set of src ops and its shuffle mask.

We uncover a number of cases where we have failed to combine a unary shuffle because the input has been duplicated and separated during lowering.

This will allow us to combine to 2-input shuffles in a future patch.

Differential Revision: https://reviews.llvm.org/D22859

llvm-svn: 277631
2016-08-03 19:08:24 +00:00
bindings [OCaml] Add functions for accessing metadata nodes. 2016-06-22 03:30:24 +00:00
cmake Add LLVM_ENABLE_LLD option to use LLD as C/C++ linker. 2016-07-29 00:46:13 +00:00
docs [sanitizer] Implement a __asan_default_options() equivalent for Scudo 2016-08-02 22:25:38 +00:00
examples [ExecutionEngine][MCJIT][Orc] Replace RuntimeDyld::SymbolInfo with JITSymbol. 2016-08-01 20:49:11 +00:00
include Reapply "More fixes to get good error messages for bad archives." 2016-08-03 19:02:50 +00:00
lib [X86][SSE] Enable target shuffle combining to combine multiple shuffle inputs. 2016-08-03 19:08:24 +00:00
projects Remove autoconf support 2016-01-26 21:29:08 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
runtimes [CMake] Add LLVM runtimes directory 2016-06-23 22:07:21 +00:00
test [X86][SSE] Enable target shuffle combining to combine multiple shuffle inputs. 2016-08-03 19:08:24 +00:00
tools Reapply "More fixes to get good error messages for bad archives." 2016-08-03 19:02:50 +00:00
unittests IR: Drop uniquing when an MDNode Value operand is deleted 2016-08-03 18:19:43 +00:00
utils build_llvm_package.bat: try tests three times 2016-07-27 20:38:01 +00:00
.arcconfig Upgrade all the .arcconfigs to https. 2016-07-14 13:15:37 +00:00
.clang-format
.clang-tidy Don't use misc-unused-parameters check on LLVM. 2016-04-13 08:58:52 +00:00
.gitignore [CMake] Add LLVM runtimes directory 2016-06-23 22:07:21 +00:00
CMakeLists.txt Build llvm with ccache if package is present 2016-08-01 21:28:03 +00:00
CODE_OWNERS.TXT test commit 2016-08-02 19:25:17 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT Update my email address. 2016-05-10 16:23:54 +00:00
LICENSE.TXT Update copyright year to 2016. 2016-03-30 22:41:06 +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
README.txt Revert rL277454 2016-08-02 13:26:07 +00:00
RELEASE_TESTERS.TXT Adding RELEASE_TESTERS.TXT 2016-07-21 16:46:44 +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.