llvm/test/Analysis
Brendon Cahoon f2a1839566 [DependenceAnalysis] Make sure base objects are the same when comparing GEPs
The dependence analysis was returning incorrect information when using the GEPs
to compute dependences. The analysis uses the GEP indices under certain
conditions, but was doing it incorrectly when the base objects of the GEP are
aliases, but pointing to different locations in the same array.

This patch adds another check for the base objects. If the base pointer SCEVs
are not equal, then the dependence analysis should fall back on the path
that uses the whole SCEV for the dependence check. This fixes PR33567.

Differential Revision: https://reviews.llvm.org/D34702


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307203 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-05 21:35:47 +00:00
..
AliasSet Use WeakVH instead of WeakTrackingVH in AliasSetTracker's UnkownInsts 2017-05-01 17:07:56 +00:00
AssumptionCache Add files I seem to have dropped in my revert (r290086). 2016-12-19 08:32:13 +00:00
BasicAA [BasicAA] Use MayAlias instead of PartialAlias for fallback. 2017-06-21 18:25:37 +00:00
BlockFrequencyInfo [BFI] Add new LazyBFI analysis pass 2016-07-13 05:01:48 +00:00
BranchProbabilityInfo [BPI] Don't assume that strcmp returning >0 is more likely than <0 2017-06-08 09:44:40 +00:00
CallGraph [CG] Add a new pass manager printer pass for the old call graph and 2016-03-10 11:24:11 +00:00
CFLAliasAnalysis [CFLAA] Add missing break; note things are broken. 2017-05-31 02:35:26 +00:00
ConstantFolding [InstSimplify] Constant fold the new GEP in SimplifyGEPInst. 2017-06-06 10:17:14 +00:00
CostModel [X86][CM] update add\sub costs of vectors of 64 in X86\SLM arch 2017-07-02 12:16:15 +00:00
Delinearization [SCEV] Assume parameters coming from function calls contain IVs 2017-05-27 15:17:49 +00:00
DemandedBits [Analysis] Support bitreverse in -demanded-bits pass 2017-04-13 16:44:25 +00:00
DependenceAnalysis [DependenceAnalysis] Make sure base objects are the same when comparing GEPs 2017-07-05 21:35:47 +00:00
DivergenceAnalysis AMDGPU: Change DivergenceAnalysis for function arguments 2017-04-19 17:42:34 +00:00
DominanceFrontier Another fix the testcase introduced by r261903 - Add the missing matches 2016-02-26 03:41:47 +00:00
Dominators [Dominators] Don't compute DFS InOut numbers eagerly. 2017-06-30 01:28:21 +00:00
GlobalsModRef Fix regression from my recent GlobalsAA fix. 2016-10-24 21:47:44 +00:00
IVUsers Re-enable "[SCEV] Do not fold dominated SCEVUnknown into AddRecExpr start" 2017-05-26 06:47:04 +00:00
LazyCallGraph [LCG] Spell the printing pass pipeline name for the lazy call graph 2016-03-10 11:24:06 +00:00
LazyValueAnalysis [JumpThreading][LVI] Invalidate LVI information after blocks are merged 2017-06-19 15:23:33 +00:00
Lint
LoopAccessAnalysis [LV/LoopAccess] Check statically if an unknown dependence distance can be 2017-02-12 09:32:53 +00:00
LoopInfo
MemoryDependenceAnalysis [PM] The assumption cache is fundamentally designed to be self-updating, 2017-01-15 00:26:18 +00:00
MemorySSA Remove readnone from invariant.group.barrier 2017-04-12 20:45:12 +00:00
PostDominators Revert "Fix PR 24415 (at least), by making our post-dominator tree behavior sane." 2017-03-02 21:08:37 +00:00
ProfileSummary Reapply r271728 after adding move cobstructor for ProfileSummaryInfo 2016-06-03 22:54:26 +00:00
RegionInfo Fix minor typo introduce in r297014 2017-03-06 16:03:26 +00:00
ScalarEvolution Revert "[IndVars] Canonicalize comparisons between non-negative values and indvars" 2017-07-05 09:44:41 +00:00
ScopedNoAliasAA [ScopedNoAliasAA] Make test basic.ll less confusing 2016-03-07 17:49:10 +00:00
TypeBasedAliasAnalysis [BasicAA] Use MayAlias instead of PartialAlias for fallback. 2017-06-21 18:25:37 +00:00
ValueTracking [ValueTracking] use nonnull argument attribute to eliminate null checks 2017-02-12 15:35:34 +00:00
alias-analysis-uses.ll Add an "addUsedAAAnalyses" helper function 2016-02-09 01:21:57 +00:00