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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82319 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2009-09-19 19:00:06 +00:00
parent a460beb5cd
commit c2fc1fec6c
1 changed files with 3 additions and 0 deletions
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3
lib/Analysis/SparsePropagation.cpp
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@ -223,6 +223,9 @@ void SparseSolver::visitTerminatorInst(TerminatorInst &TI) {
}
void SparseSolver::visitPHINode(PHINode &PN) {
// The lattice function may store more information on a PHINode than could be
// computed from its incoming values. For example, SSI form stores its sigma
// functions as PHINodes with a single incoming value.
if (LatticeFunc->IsSpecialCasedPHI(&PN)) {
LatticeVal IV = LatticeFunc->ComputeInstructionState(PN, *this);
if (IV != LatticeFunc->getUntrackedVal())