Cong Hou 0d04e87535 [X86][SSE] Transform truncations between vectors of integers into X86ISD::PACKUS/PACKSS operations during DAG combine. ... This patch transforms truncation between vectors of integers into X86ISD::PACKUS/PACKSS operations during DAG combine. We don't do it in lowering phase because after type legalization, the original truncation will be turned into a BUILD_VECTOR with each element that is extracted from a vector and then truncated, and from them it is difficult to do this optimization. This greatly improves the performance of truncations on some specific types. Cost table is updated accordingly. Differential revision: http://reviews.llvm.org/D14588 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256194 91177308-0d34-0410-b5e6-96231b3b80d8		2015-12-21 20:42:43 +00:00
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AssumptionCache	[PM] Actually add the new pass manager support for the assumption cache.	2015-01-22 21:53:09 +00:00
BasicAA	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
BlockFrequencyInfo	Use getEdgeProbability() instead of getEdgeWeight() in BFI and remove getEdgeWeight() interfaces from MBPI.	2015-12-18 21:53:24 +00:00
BranchProbabilityInfo	Revert "Enhance BranchProbabilityInfo::calcUnreachableHeuristics for InvokeInst"	2015-12-18 21:23:32 +00:00
CallGraph	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
CFLAliasAnalysis	[PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible	2015-09-09 17:55:00 +00:00
CostModel	[X86][SSE] Transform truncations between vectors of integers into X86ISD::PACKUS/PACKSS operations during DAG combine.	2015-12-21 20:42:43 +00:00
Delinearization	[SCEV] Mark AddExprs as nsw or nuw if legal	2015-10-22 19:57:19 +00:00
DemandedBits	Compute demanded bits for icmp instructions	2015-10-08 12:40:06 +00:00
DependenceAnalysis	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
DivergenceAnalysis	AMDGPU/SI: Fix implemenation of isSourceOfDivergence() for graphics shaders	2015-12-19 02:54:15 +00:00
Dominators	Move the personality function from LandingPadInst to Function	2015-06-17 20:52:32 +00:00
GlobalsModRef	GlobalsAA: Take advantage of ArgMemOnly, InaccessibleMemOnly and InaccessibleMemOrArgMemOnly attributes	2015-12-18 11:02:52 +00:00
LazyCallGraph	[LazyCallGraph] Port test case from r240039 to LCG.	2015-07-02 02:03:58 +00:00
Lint	[WinEH] Delete the old landingpad implementation of Windows EH	2015-10-09 23:34:53 +00:00
LoopAccessAnalysis	Fix LoopAccessAnalysis when potentially nullptr check are involved	2015-11-05 05:49:43 +00:00
LoopInfo	[PM] Port LoopInfo to the new pass manager, adding both a LoopAnalysis	2015-01-20 10:58:50 +00:00
MemoryDependenceAnalysis	[MDA] change BlockScanLimit into a command line option.	2015-07-21 21:50:39 +00:00
PostDominators	FileCheck-ize tests.	2013-08-22 00:51:19 +00:00
RegionInfo	[tests] Cleanup initialization of test suffixes.	2013-08-16 00:37:11 +00:00
ScalarEvolution	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
ScopedNoAliasAA	[Testsuite] Renumber metadata in ScopedNoAliasAA test to match CHECK lines	2015-05-11 09:10:14 +00:00
TypeBasedAliasAnalysis	Revert "Change memcpy/memset/memmove to have dest and source alignments."	2015-11-19 05:56:52 +00:00
ValueTracking	[ValueTracking] Properly handle non-sized types in isAligned function.	2015-12-21 20:38:18 +00:00