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Make MDNode use CallbackVH. Also change MDNode to store Value* instead of

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Constant* in preperation of a future change to support holding non-Constants
in an MDNode.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71407 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky
2009-05-10 20:57:05 +00:00
parent af3fdb5dc4
commit cb33799b9f
12 changed files with 270 additions and 105 deletions
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16
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -17,6 +17,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/InlineAsm.h"
#include "llvm/Instructions.h"
#include "llvm/MDNode.h"
#include "llvm/Module.h"
#include "llvm/AutoUpgrade.h"
#include "llvm/ADT/SmallString.h"
@ -287,12 +288,10 @@ void BitcodeReaderValueList::ResolveConstantForwardRefs() {
UserCS->getType()->isPacked());
} else if (isa<ConstantVector>(UserC)) {
NewC = ConstantVector::get(&NewOps[0], NewOps.size());
} else if (isa<ConstantExpr>(UserC)) {
} else {
assert(isa<ConstantExpr>(UserC) && "Must be a ConstantExpr.");
NewC = cast<ConstantExpr>(UserC)->getWithOperands(&NewOps[0],
NewOps.size());
} else {
assert(isa<MDNode>(UserC) && "Must be a metadata node.");
NewC = MDNode::get(&NewOps[0], NewOps.size());
}
UserC->replaceAllUsesWith(NewC);
@ -300,6 +299,8 @@ void BitcodeReaderValueList::ResolveConstantForwardRefs() {
NewOps.clear();
}
// Update all ValueHandles, they should be the only users at this point.
Placeholder->replaceAllUsesWith(RealVal);
delete Placeholder;
}
}
@ -1017,10 +1018,13 @@ bool BitcodeReader::ParseConstants() {
return Error("Invalid CST_MDNODE record");
unsigned Size = Record.size();
SmallVector<Constant*, 8> Elts;
SmallVector<Value*, 8> Elts;
for (unsigned i = 0; i != Size; i += 2) {
const Type *Ty = getTypeByID(Record[i], false);
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], Ty));
if (Ty != Type::VoidTy)
Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], Ty));
else
Elts.push_back(NULL);
}
V = MDNode::get(&Elts[0], Elts.size());
break;