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Andrea Di Biagio a03624d8ab [X86] Add a check for 'isMOVHLPSMask' within method 'isShuffleMaskLegal'. 
Before this change, method 'isShuffleMaskLegal' didn't know that shuffles
implementing a 'movhlps' operation were perfectly legal for SSE targets.

This patch adds the missing check for 'isMOVHLPSMask' inside method
'isShuffleMaskLegal' to fix the problem.

The reason why it is important to do this is because the DAGCombiner
conservatively avoids combining a pair of shuffles if the resulting shuffle
node has an illegal mask. Before this patch, shuffles with a MOVHLPS mask were
wrongly considered not to be legal. This was the root cause of some poor-code
generation bugs.

llvm-svn: 213137
 		2014-07-16 11:29:39 +00:00
..
Analysis Revert r212572 "improve BasicAA CS-CS queries", it causes PR20303. 2014-07-15 00:53:38 +00:00
Assembler IR: Add COMDATs to the IR 2014-06-27 18:19:56 +00:00
Bindings Reduce verbiage of lit.local.cfg files 2014-06-09 22:42:55 +00:00
Bitcode Roundtrip the inalloca bit on allocas through bitcode 2014-07-16 01:34:27 +00:00
BugPoint llvm/test/BugPoint/compile-custom.ll: Use explicit %python to invoke a test script, compile-custom.ll.py, for shebang-incapable hosts. 2014-07-11 14:44:10 +00:00
CodeGen [X86] Add a check for 'isMOVHLPSMask' within method 'isShuffleMaskLegal'. 2014-07-16 11:29:39 +00:00
DebugInfo Try out FileCheck's new (in r212810) -implicit-check-not in a DebugInfo test. 2014-07-15 21:06:37 +00:00
ExecutionEngine [RuntimeDyld] Replace a crufty old ARM RuntimeDyld test with a new one that uses 2014-07-10 23:29:11 +00:00
Feature IR: Allow comdats to be applied to globals with internal linkage 2014-07-13 04:56:11 +00:00
FileCheck Add FileCheck -implicit-check-not option to allow stricter tests without adding too many CHECK-NOTs manually. 2014-07-11 12:39:32 +00:00
Instrumentation [dfsan] Introduce further optimization to reduce the number of union queries. 2014-07-15 22:13:19 +00:00
Integer
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JitListener
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LTO Change the default input for llvm-nm to be a.out instead of standard input 2014-06-23 20:27:53 +00:00
Linker IR: Add COMDATs to the IR 2014-06-27 18:19:56 +00:00
MC [AArch64] Add negative tests for the SIMD & FP LDP instructions. 2014-07-15 16:33:24 +00:00
Object [Mips] Support SHT_MIPS_ABIFLAGS section type flag in the llvm-readobj, 2014-07-13 15:28:54 +00:00
Other IR: Fold away compares between GV GEPs and GVs 2014-07-04 22:05:26 +00:00
TableGen Fix error in tablegen when either operand of !if is an empty list. 2014-06-10 20:10:08 +00:00
Transforms Emit warnings if vectorization is forced and fails. 2014-07-16 00:36:00 +00:00
Unit Let test/Unit/lit.cfg add config.shlibdir to $PATH on DLL platforms like cygming. 2014-07-04 05:11:55 +00:00
Verifier IR: Allow comdats to be applied to globals with internal linkage 2014-07-13 04:56:11 +00:00
YAMLParser
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tools llvm-objdump: Handle BSS sections larger than the object file 2014-07-14 16:20:14 +00:00
.clang-format
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CMakeLists.txt OK, NAKAMURA Takumi beat me to this change. So backing out my addition of 2014-05-19 23:26:51 +00:00
Makefile lld test for configure & make 2014-06-06 09:06:25 +00:00
Makefile.tests
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TestRunner.sh
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lit.cfg llvm/test/lit.cfg: Let %python available. 2014-07-11 14:36:39 +00:00
lit.site.cfg.in
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