An instruction's operands aren't necessarily instructions or constants. They
could be arguments, for example.
No testcase because this is a bug-fix broken out of a larger optimization patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141951 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index f09f357..e0ac56c 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -4764,7 +4764,8 @@
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) {
Instruction *Operand = dyn_cast<Instruction>(I->getOperand(i));
if (!Operand) {
- Operands[i] = cast<Constant>(I->getOperand(i));
+ Operands[i] = dyn_cast<Constant>(I->getOperand(i));
+ if (!Operands[i]) return 0;
continue;
}
Constant *C = EvaluateExpression(Operand, L, Vals, TD);
