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e32bfe25a3
llvm/test/Analysis
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Wei Mi e32bfe25a3 [SCEV] Try to reuse existing value during SCEV expansion 
Current SCEV expansion will expand SCEV as a sequence of operations
and doesn't utilize the value already existed. This will introduce
redundent computation which may not be cleaned up throughly by
following optimizations.

This patch introduces an ExprValueMap which is a map from SCEV to the
set of equal values with the same SCEV. When a SCEV is expanded, the
set of values is checked and reused whenever possible before generating
a sequence of operations.

Differential Revision: http://reviews.llvm.org/D12090



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259662 91177308-0d34-0410-b5e6-96231b3b80d8
2016-02-03 17:05:12 +00:00
..
AssumptionCache [PM] Actually add the new pass manager support for the assumption cache. 2015-01-22 21:53:09 +00:00
BasicAA [BasicAA] Fix for missing must alias (D16343) 2016-01-30 05:52:53 +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 [BPI] Replace weights by probabilities in BPI. 2015-12-22 18:56:14 +00:00
CallGraph [gc.statepoint] Change gc.statepoint intrinsic's return type to token type instead of i32 type 2015-12-26 07:54:32 +00:00
CFLAliasAnalysis [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
CostModel Implemented cost model for masked gather and scatter operations 2015-12-28 20:10:59 +00:00
Delinearization [SCEV] Mark AddExprs as nsw or nuw if legal 2015-10-22 19:57:19 +00:00
DemandedBits [DemandedBits] Revert r249687 due to PR26071 2016-02-03 15:05:06 +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] Relax condition in checking globals as args to functions 2016-01-14 08:46:45 +00:00
LazyCallGraph [LCG] Build an edge abstraction for the LazyCallGraph and use it to 2016-02-02 03:57:13 +00:00
Lint [WinEH] Delete the old landingpad implementation of Windows EH 2015-10-09 23:34:53 +00:00
LoopAccessAnalysis [Vectorization] Actually return from error case in isStridedPtr 2016-01-08 01:55:13 +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 [SCEV] Try to reuse existing value during SCEV expansion 2016-02-03 17:05:12 +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 Revert "[ValueTracking] Understand more select patterns in ComputeKnownBits" 2016-01-14 15:49:32 +00:00