diff options
| -rw-r--r-- | lib/Analysis/ScalarEvolutionAliasAnalysis.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp index 381ea20486..cc79e6c3b1 100644 --- a/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp +++ b/lib/Analysis/ScalarEvolutionAliasAnalysis.cpp @@ -69,9 +69,14 @@ ScalarEvolutionAliasAnalysis::runOnFunction(Function &F) { return false; } +/// GetUnderlyingIdentifiedObject - Given an expression, try to find an +/// "identified object" (see AliasAnalysis::isIdentifiedObject) base +/// value. Return null is none was found. Value * ScalarEvolutionAliasAnalysis::GetUnderlyingIdentifiedObject(const SCEV *S) { if (const SCEVAddRecExpr *AR = dyn_cast<SCEVAddRecExpr>(S)) { + // In an addrec, assume that the base will be in the start, rather + // than the step. return GetUnderlyingIdentifiedObject(AR->getStart()); } else if (const SCEVAddExpr *A = dyn_cast<SCEVAddExpr>(S)) { // If there's a pointer operand, it'll be sorted at the end of the list. |