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Remove #include

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Extend getNullValue to work with struct and array types


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5718 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-03-06 21:02:18 +00:00
parent 42289a3010
commit 27accf7692
1 changed files with 18 additions and 1 deletions
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19
lib/VMCore/Constants.cpp
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@ -9,7 +9,6 @@
#include "llvm/iMemory.h"
#include "llvm/SymbolTable.h"
#include "llvm/Module.h"
#include "llvm/SlotCalculator.h"
#include "Support/StringExtras.h"
#include <algorithm>
@ -80,7 +79,25 @@ Constant *Constant::getNullValue(const Type *Ty) {
case Type::PointerTyID:
return ConstantPointerNull::get(cast<PointerType>(Ty));
case Type::StructTyID: {
const StructType *ST = cast<StructType>(Ty);
const StructType::ElementTypes &ETs = ST->getElementTypes();
std::vector<Constant*> Elements;
Elements.resize(ETs.size());
for (unsigned i = 0, e = ETs.size(); i != e; ++i)
Elements[i] = Constant::getNullValue(ETs[i]);
return ConstantStruct::get(ST, Elements);
}
case Type::ArrayTyID: {
const ArrayType *AT = cast<ArrayType>(Ty);
Constant *El = Constant::getNullValue(AT->getElementType());
unsigned NumElements = AT->getNumElements();
return ConstantArray::get(AT, std::vector<Constant*>(NumElements, El));
}
default:
// Function, Type, Label, or Opaque type?
assert(0 && "Cannot create a null constant of that type!");
return 0;
}
}