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a43b643107
llvm-mirror/test/Analysis
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Sanjoy Das a43b643107 [SCEV] Reapply 'Teach isLoopBackedgeGuardedByCond to exploit trip counts' 
Summary:
If the trip count of a specific backedge is `N`, then we know that
backedge is effectively guarded by the condition `{0,+,1} u< N`.  This
change teaches SCEV to use this condition to prove things in
`isLoopBackedgeGuardedByCond`.

Depends on D12948
Depends on D12949

The original checkin, r248608 had to be backed out due to an issue with
a ObjCXX unit test.  That issue is now fixed, so re-landing.

Reviewers: atrick, reames, majnemer, hfinkel

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12950

llvm-svn: 248638
2015-09-25 23:53:50 +00:00
..
AssumptionCache
BasicAA [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +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 [CostModel][AArch64] Remove amortization factor for some of the vector select instructions 2015-09-09 15:35:02 +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
MemoryDependenceAnalysis [MDA] change BlockScanLimit into a command line option. 2015-07-21 21:50:39 +00:00
PostDominators
RegionInfo
ScalarEvolution [SCEV] Reapply 'Teach isLoopBackedgeGuardedByCond to exploit trip counts' 2015-09-25 23:53:50 +00:00
ScopedNoAliasAA [Testsuite] Renumber metadata in ScopedNoAliasAA test to match CHECK lines 2015-05-11 09:10:14 +00:00
TypeBasedAliasAnalysis [PM/AA] Rebuild LLVM's alias analysis infrastructure in a way compatible 2015-09-09 17:55:00 +00:00
ValueTracking [ValueTracking] Teach isKnownNonZero a new trick 2015-09-24 16:06:32 +00:00