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Change CloneFunctionInto to always clone Argument attributes induvidually,

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rather than checking if the source and destination have the same number of
arguments and copying the attributes over directly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179169 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Joey Gouly
2013-04-10 10:37:38 +00:00
parent 4d0e8a8a3e
commit 0f57a98a65
2 changed files with 47 additions and 23 deletions
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41
lib/Transforms/Utils/CloneFunction.cpp
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@ -87,29 +87,26 @@ void llvm::CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
assert(VMap.count(I) && "No mapping from source argument specified!");
#endif
// Clone any attributes.
if (NewFunc->arg_size() == OldFunc->arg_size())
NewFunc->copyAttributesFrom(OldFunc);
else {
//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])) {
AttributeSet attrs = OldFunc->getAttributes()
.getParamAttributes(I->getArgNo() + 1);
if (attrs.getNumSlots() > 0)
Anew->addAttr(attrs);
}
NewFunc->setAttributes(NewFunc->getAttributes()
.addAttributes(NewFunc->getContext(),
AttributeSet::ReturnIndex,
OldFunc->getAttributes()));
NewFunc->setAttributes(NewFunc->getAttributes()
.addAttributes(NewFunc->getContext(),
AttributeSet::FunctionIndex,
OldFunc->getAttributes()));
AttributeSet OldAttrs = OldFunc->getAttributes();
// Clone any argument attributes that are present in the VMap.
for (Function::const_arg_iterator I = OldFunc->arg_begin(),
E = OldFunc->arg_end();
I != E; ++I)
if (Argument *Anew = dyn_cast<Argument>(VMap[I])) {
AttributeSet attrs =
OldAttrs.getParamAttributes(I->getArgNo() + 1);
if (attrs.getNumSlots() > 0)
Anew->addAttr(attrs);
}
}
NewFunc->setAttributes(NewFunc->getAttributes()
.addAttributes(NewFunc->getContext(),
AttributeSet::ReturnIndex,
OldAttrs.getRetAttributes()));
NewFunc->setAttributes(NewFunc->getAttributes()
.addAttributes(NewFunc->getContext(),
AttributeSet::FunctionIndex,
OldAttrs.getFnAttributes()));
// Loop over all of the basic blocks in the function, cloning them as
// appropriate. Note that we save BE this way in order to handle cloning of