Chandler Carruth 2fdec16fbe [x86] Teach the x86 DAG combiner to form UNPCKLPS and UNPCKHPS
instructions from the relevant shuffle patterns.

This is the last tweak I'm aware of to generate essentially perfect
v4f32 and v2f64 shuffles with the new vector shuffle lowering up through
SSE4.1. I'm sure I've missed some and it'd be nice to check since v4f32
is amenable to exhaustive exploration, but this is all of the tricks I'm
aware of.

With AVX there is a new trick to use the VPERMILPS instruction, that's
coming up in a subsequent patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217761 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-15 11:26:25 +00:00
2014-08-14 15:15:09 +00:00
2014-09-02 22:28:02 +00:00
2014-09-12 11:08:59 +00:00
2014-04-07 03:57:04 +00:00
2014-03-02 13:08:46 +00:00
2014-06-25 13:13:36 +00:00
2014-08-14 15:15:09 +00:00
2014-03-12 22:40:22 +00:00
2014-07-16 16:50:34 +00:00
2014-09-02 22:28:02 +00:00
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
Virtual Machine, 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
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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
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