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Mirror of https://github.com/RPCS3/llvm-mirror
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Michael Kuperstein 81a40a5cbe [DagCombine] Improve DAGCombiner BUILD_VECTOR when it has two sources of elements 
This partially fixes PR21943.

For AVX, we go from:

vmovq   (%rsi), %xmm0
vmovq   (%rdi), %xmm1
vpermilps       $-27, %xmm1, %xmm2 ## xmm2 = xmm1[1,1,2,3]
vinsertps       $16, %xmm2, %xmm1, %xmm1 ## xmm1 = xmm1[0],xmm2[0],xmm1[2,3]
vinsertps       $32, %xmm0, %xmm1, %xmm1 ## xmm1 = xmm1[0,1],xmm0[0],xmm1[3]
vpermilps       $-27, %xmm0, %xmm0 ## xmm0 = xmm0[1,1,2,3]
vinsertps       $48, %xmm0, %xmm1, %xmm0 ## xmm0 = xmm1[0,1,2],xmm0[0]

To the expected:

vmovq   (%rdi), %xmm0
vmovhpd (%rsi), %xmm0, %xmm0
retq

Fixing this for AVX2 is still open.

Differential Revision: http://reviews.llvm.org/D6749

llvm-svn: 224759
2014-12-23 08:59:45 +00:00
autoconf Require python 2.7. 2014-12-12 15:29:31 +00:00
bindings Go bindings: introduce Value.ConstantAsMetadata. 2014-12-13 02:25:57 +00:00
cmake [cmake] Unbreak LLVM-Config.cmake / llvm_expand_dependencies. 2014-12-18 23:56:52 +00:00
docs IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
examples Once more on the cmake build. nativecodegen->native on the dependencies. 2014-12-08 18:24:06 +00:00
include Fix UBSan bootstrap: don't bind reference to nullptr. 2014-12-23 04:15:47 +00:00
lib [DagCombine] Improve DAGCombiner BUILD_VECTOR when it has two sources of elements 2014-12-23 08:59:45 +00:00
projects
test [DagCombine] Improve DAGCombiner BUILD_VECTOR when it has two sources of elements 2014-12-23 08:59:45 +00:00
tools strnlen isn't available on some platforms, use StringRef instead 2014-12-20 08:24:43 +00:00
unittests [C API] Expose LLVMGetGlobalValueAddress and LLVMGetFunctionAddress. 2014-12-22 18:53:11 +00:00
utils Use iterators rather than indices to make this forwards-compatible with a change to the underlying container (to std::list) 2014-12-22 21:26:38 +00:00
.arcconfig
.clang-format
.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 Adding a new option to CMake to disable C++ atexit on llvm-shlib. 2014-12-09 18:49:55 +00:00
CODE_OWNERS.TXT Add myself as SystemZ code owner 2014-12-18 19:27:50 +00:00
configure Require python 2.7. 2014-12-12 15:29:31 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
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 [TEST-COMMIT] As per Developer Policy, Added a blank line. 2014-12-06 00:38:39 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
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LLVM is open source software. You may freely distribute it under the terms of
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Please see the documentation provided in docs/ for further
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If you're writing a package for LLVM, see docs/Packaging.rst for our
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