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-rw-r--r--lib/Analysis/ScalarEvolution.cpp7
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index 3ae65286fa..ed8ea32767 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -685,8 +685,11 @@ SCEVHandle SCEVAddExpr::get(std::vector<SCEVHandle> &Ops) {
return SCEVAddExpr::get(Ops);
}
- // Okay, now we know the first non-constant operand. If there are add
- // operands they would be next.
+ // Now we know the first non-constant operand. Skip past any cast SCEVs.
+ while (Idx < Ops.size() && Ops[Idx]->getSCEVType() < scAddExpr)
+ ++Idx;
+
+ // If there are add operands they would be next.
if (Idx < Ops.size()) {
bool DeletedAdd = false;
while (SCEVAddExpr *Add = dyn_cast<SCEVAddExpr>(Ops[Idx])) {