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0fed823734
Summary: Users of SCEV reasonably assume that multiplication of two constant SCEVs will in turn be constant. However, that is not always the case: First, we can get here with reached depth limit, and will create MultExpr SCEV `C1 * C2` and cache it. Then, we can get here with the same operands, but with small depth level. But this time we will find existing MultExpr SCEV and return it, instead of expected constant SCEV. This patch changes getMultExpr to not apply depth limit to all constant operands expression, allowing them to be folded. Reviewers: reames, mkazantsev Subscribers: hiraditya, javed.absar, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D79893 |
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| .. | ||
| AliasSet | ||
| AssumptionCache | ||
| BasicAA | ||
| BlockFrequencyInfo | ||
| BranchProbabilityInfo | ||
| CallGraph | ||
| CFLAliasAnalysis | ||
| ConstantFolding | ||
| CostModel | ||
| DDG | ||
| Delinearization | ||
| DemandedBits | ||
| DependenceAnalysis | ||
| DivergenceAnalysis | ||
| DominanceFrontier | ||
| Dominators | ||
| GlobalsModRef | ||
| IVUsers | ||
| LazyCallGraph | ||
| LazyValueAnalysis | ||
| LegacyDivergenceAnalysis | ||
| Lint | ||
| LoopAccessAnalysis | ||
| LoopCacheAnalysis/PowerPC | ||
| LoopInfo | ||
| LoopNestAnalysis | ||
| MemoryDependenceAnalysis | ||
| MemorySSA | ||
| MustExecute | ||
| PhiValues | ||
| PostDominators | ||
| ProfileSummary | ||
| RegionInfo | ||
| ScalarEvolution | ||
| ScopedNoAliasAA | ||
| StackSafetyAnalysis | ||
| TypeBasedAliasAnalysis | ||
| ValueTracking | ||
| alias-analysis-uses.ll | ||