Fix crasher when N->getElement(n) is NULL

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90572 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Victor Hernandez 2009-12-04 18:29:23 +00:00
parent 79fc6f44b6
commit 954c80e99d

View File

@ -698,7 +698,7 @@ void SlotTracker::processFunction() {
if (MDNode *N = dyn_cast_or_null<MDNode>(I->getOperand(i))) {
// Create a metadata slot only if N contains no instructions.
for (unsigned n = 0, e = N->getNumElements(); n != e; ++n)
if (isa<Instruction>(N->getElement(n)))
if (N->getElement(n) && isa<Instruction>(N->getElement(n)))
continue;
CreateMetadataSlot(N);
}