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Max Kazantsev 8d0322e612 [SCEV] Use depth limit instead of local cache for SExt and ZExt 
In rL300494 there was an attempt to deal with excessive compile time on
invocations of getSign/ZeroExtExpr using local caching. This approach only
helps if we request the same SCEV multiple times throughout recursion. But
in the bug PR33431 we see a case where we request different values all the time,
so caching does not help and the size of the cache grows enormously.

In this patch we remove the local cache for this methods and add the recursion
depth limit instead, as we do for arithmetics. This gives us a guarantee that the
invocation sequence is limited and reasonably short.

Differential Revision: https://reviews.llvm.org/D34273

llvm-svn: 306785
 		2017-06-30 05:04:09 +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
CFLAliasAnalysis [CFLAA] Add missing break; note things are broken. 2017-05-31 02:35:26 +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
ConstantFolding [InstSimplify] Constant fold the new GEP in SimplifyGEPInst. 2017-06-06 10:17:14 +00:00
CostModel [AVX2] [TTI CostModel] Add cost of interleaved loads/stores for AVX2 2017-06-25 08:26:25 +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] Check if result of getConstantPart is null 2016-04-04 18:13:18 +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
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LoopAccessAnalysis [LV/LoopAccess] Check statically if an unknown dependence distance can be 2017-02-12 09:32:53 +00:00
LoopInfo
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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 [SCEV] Use depth limit instead of local cache for SExt and ZExt 2017-06-30 05:04:09 +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
…