Andrea Di Biagio cae1ea691d [X86] Always prefer to lower a VECTOR_SHUFFLE into a BLENDI instead of SHUFP (or VPERM2X128). ... This patch teaches method 'LowerVECTOR_SHUFFLE' to give higher precedence to the check for 'isBlendMask'; the idea is that, when possible, we should firstly check if a shuffle performs a blend, and in case, try to lower it into a BLENDI instead of selecting a SHUFP or (worse) a VPERM2X128. In general: - AVX VBLENDPS/D always have better latency and throughput than VPERM2F128; - BLENDPS/D instructions tend to always have better 'reciprocal throughput' than the equivalent SHUFPS/D; - Both BLENDPS/D and SHUFPS/D are often decoded into the same number of m-ops; however, a m-op obtained from a BLENDPS/D can be scheduled to more than one execution port. This patch: - Moves the check for 'isBlendMask' immediately before the check for 'isSHUFPMask' within method 'LowerVECTOR_SHUFFLE'; - Updates existing tests for sse/avx shuffle/blend instructions to verify that we select (v)blendps/d when possible (instead of (v)shufps/d or vperm2f128). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211720 91177308-0d34-0410-b5e6-96231b3b80d8		2014-06-25 17:41:58 +00:00
..
Analysis
Assembler	Add some test files for r211710.	2014-06-25 15:41:39 +00:00
Bindings
Bitcode	Add some test files for r211710.	2014-06-25 15:41:39 +00:00
BugPoint
CodeGen	[X86] Always prefer to lower a VECTOR_SHUFFLE into a BLENDI instead of SHUFP (or VPERM2X128).	2014-06-25 17:41:58 +00:00
DebugInfo	Fix another asserting method in the null streamer.	2014-06-25 05:37:58 +00:00
ExecutionEngine	[RuntimeDyld] Support more PPC64 relocations	2014-06-20 17:51:47 +00:00
Feature
FileCheck
Instrumentation	[msan] Fix bad interaction between with-calls mode and chained origin tracking.	2014-06-25 14:41:57 +00:00
Integer
JitListener
Linker
LTO	Change the default input for llvm-nm to be a.out instead of standard input	2014-06-23 20:27:53 +00:00
MC	ldr-pseudo-obj-errors.s: Fix silly copypasto.	2014-06-24 23:18:07 +00:00
Object	nm-trivial-object.test requires shell since Lit internal runner isn't capable of chdir.	2014-06-23 21:07:04 +00:00
Other	Change the default input for llvm-nm to be a.out instead of standard input	2014-06-23 20:27:53 +00:00
TableGen
tools	Do not XFAIL test/tools/llvm-cov tests on powerpc64le	2014-06-18 15:52:18 +00:00
Transforms	Rename loop unrolling and loop vectorizer metadata to have a common prefix.	2014-06-25 15:41:00 +00:00
Unit
Verifier	[ValueTracking] Extend range metadata to call/invoke	2014-06-19 16:50:16 +00:00
YAMLParser
.clang-format
CMakeLists.txt
lit.cfg	Delete utils/FileUpdate.	2014-06-23 17:58:39 +00:00
lit.site.cfg.in
Makefile
Makefile.tests
TestRunner.sh