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When testing whether a given SCEV depends on a temporary symbolic

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name, test whether the SCEV itself is that temporary symbolic name,
in addition to checking whether the symbolic name appears as a
possibly-indirect operand.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96216 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-02-15 10:28:37 +00:00
parent da272d1a70
commit 50922bbe74
1 changed files with 1 additions and 1 deletions
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2
lib/Analysis/ScalarEvolution.cpp
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@ -2566,7 +2566,7 @@ ScalarEvolution::ForgetSymbolicName(Instruction *I, const SCEV *SymName) {
if (It != Scalars.end()) {
// Short-circuit the def-use traversal if the symbolic name
// ceases to appear in expressions.
if (!It->second->hasOperand(SymName))
if (It->second != SymName && !It->second->hasOperand(SymName))
continue;
// SCEVUnknown for a PHI either means that it has an unrecognized