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Add additional checking to ensure that MachineMemOperands are never set to null, which can happen in weird circumstances where target intrinsic hooks are implemented incorrectly.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144303 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2011-11-10 19:25:09 +00:00
parent ee10ff89a2
commit 39fe397421
1 changed files with 2 additions and 0 deletions
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include/llvm/CodeGen/SelectionDAGNodes.h
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@ -1685,6 +1685,8 @@ public:
/// setMemRefs - Assign this MachineSDNodes's memory reference descriptor
/// list. This does not transfer ownership.
void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) {
for (mmo_iterator MMI = NewMemRefs, MME = NewMemRefsEnd; MMI != MME; ++MMI)
assert(*MMI && "Null mem ref detected!");
MemRefs = NewMemRefs;
MemRefsEnd = NewMemRefsEnd;
}