Fixed a crash when cloning a function into a function with
different size argument list and without attributes in the
arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176632 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/Utils/CloneFunction.cpp b/lib/Transforms/Utils/CloneFunction.cpp
index a309bce..63d7a1d 100644
--- a/lib/Transforms/Utils/CloneFunction.cpp
+++ b/lib/Transforms/Utils/CloneFunction.cpp
@@ -94,9 +94,12 @@
//Some arguments were deleted with the VMap. Copy arguments one by one
for (Function::const_arg_iterator I = OldFunc->arg_begin(),
E = OldFunc->arg_end(); I != E; ++I)
- if (Argument* Anew = dyn_cast<Argument>(VMap[I]))
- Anew->addAttr(OldFunc->getAttributes()
- .getParamAttributes(I->getArgNo() + 1));
+ if (Argument* Anew = dyn_cast<Argument>(VMap[I])) {
+ AttributeSet attrs = OldFunc->getAttributes()
+ .getParamAttributes(I->getArgNo() + 1);
+ if (attrs.getNumSlots() > 0)
+ Anew->addAttr(attrs);
+ }
NewFunc->setAttributes(NewFunc->getAttributes()
.addAttributes(NewFunc->getContext(),
AttributeSet::ReturnIndex,