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Sanjoy Das 79fa7ea8a7 [SCEV] Recognize simple br-phi patterns 
Summary:
Teach SCEV to match patterns like

```
  br %cond, label %left, label %right
 left:
  br label %merge
 right:
  br label %merge
 merge:
  V = phi [ %x, %left ], [ %y, %right ]
```

as "select %cond, %x, %y".  Before this SCEV would match PHI nodes
exclusively to add recurrences.

This addresses PR25005.

Reviewers: joker.eph, joker-eph, atrick

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D13378

llvm-svn: 249211
2015-10-02 23:09:44 +00:00
..
AssumptionCache [PM] Actually add the new pass manager support for the assumption cache. 2015-01-22 21:53:09 +00:00
BasicAA [ARM][NEON] Use address space in vld([1234]|[234]lane) and vst([1234]|[234]lane) instructions 2015-09-30 10:56:37 +00:00
BlockFrequencyInfo Use fixed-point representation for BranchProbability. 2015-09-25 23:09:59 +00:00
BranchProbabilityInfo Use fixed-point representation for BranchProbability. 2015-09-25 23:09:59 +00:00
CallGraph [CallGraph] Given -print-callgraph a stable printing order. 2015-06-19 23:20:31 +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][XOP] Added support for the lowering of 128-bit vector shifts to XOP shift instructions 2015-09-30 08:17:50 +00:00
Delinearization [SCEV] Apply NSW and NUW flags via poison value analysis for sub, mul and shl 2015-08-14 22:45:26 +00:00
DependenceAnalysis [SCEV] Consistently Handle Expressions That Cannot Be Divided 2015-09-10 18:12:47 +00:00
DivergenceAnalysis/NVPTX Divergence analysis for GPU programs 2015-04-10 05:03:50 +00:00
Dominators Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
GlobalsModRef [GlobalsAA] Teach GlobalsAA about nocapture 2015-09-25 15:39:29 +00:00
LazyCallGraph [LazyCallGraph] Port test case from r240039 to LCG. 2015-07-02 02:03:58 +00:00
Lint Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
LoopAccessAnalysis [LAA] Fix typo in test 2015-08-11 23:03:09 +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
RegionInfo
ScalarEvolution [SCEV] Recognize simple br-phi patterns 2015-10-02 23:09:44 +00:00
ScopedNoAliasAA [Testsuite] Renumber metadata in ScopedNoAliasAA test to match CHECK lines 2015-05-11 09:10:14 +00:00
TypeBasedAliasAnalysis [ARM][NEON] Use address space in vld([1234]|[234]lane) and vst([1234]|[234]lane) instructions 2015-09-30 10:56:37 +00:00
ValueTracking [ValueTracking] Teach isKnownNonZero about monotonically increasing PHIs 2015-09-29 14:08:45 +00:00