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Eliminated the MemAccessInst class, folding contents into GEP class.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3487 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-08-22 23:37:20 +00:00
parent d145c2172f
commit cc63f1c674
13 changed files with 114 additions and 184 deletions
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63
lib/VMCore/iMemory.cpp
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@ -38,39 +38,6 @@ const Type *AllocationInst::getAllocatedType() const {
}
//===----------------------------------------------------------------------===//
// MemAccessInst Implementation
//===----------------------------------------------------------------------===//
// getIndexedType - Returns the type of the element that would be loaded with
// a load instruction with the specified parameters.
//
// A null type is returned if the indices are invalid for the specified
// pointer type.
//
const Type* MemAccessInst::getIndexedType(const Type *Ptr,
const std::vector<Value*> &Idx,
bool AllowCompositeLeaf) {
if (!isa<PointerType>(Ptr)) return 0; // Type isn't a pointer type!
// Handle the special case of the empty set index set...
if (Idx.empty()) return cast<PointerType>(Ptr)->getElementType();
unsigned CurIDX = 0;
while (const CompositeType *CT = dyn_cast<CompositeType>(Ptr)) {
if (Idx.size() == CurIDX) {
if (AllowCompositeLeaf || CT->isFirstClassType()) return Ptr;
return 0; // Can't load a whole structure or array!?!?
}
Value *Index = Idx[CurIDX++];
if (!CT->indexValid(Index)) return 0;
Ptr = CT->getTypeAtIndex(Index);
}
return CurIDX == Idx.size() ? Ptr : 0;
}
//===----------------------------------------------------------------------===//
// LoadInst Implementation
//===----------------------------------------------------------------------===//
@ -102,7 +69,7 @@ StoreInst::StoreInst(Value *Val, Value *Ptr)
GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
const std::string &Name)
: MemAccessInst(PointerType::get(checkType(getIndexedType(Ptr->getType(),
: Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),
Idx, true))),
GetElementPtr, Name) {
assert(getIndexedType(Ptr->getType(), Idx, true) && "gep operands invalid!");
@ -113,6 +80,34 @@ GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
Operands.push_back(Use(Idx[i], this));
}
// getIndexedType - Returns the type of the element that would be loaded with
// a load instruction with the specified parameters.
//
// A null type is returned if the indices are invalid for the specified
// pointer type.
//
const Type* GetElementPtrInst::getIndexedType(const Type *Ptr,
const std::vector<Value*> &Idx,
bool AllowCompositeLeaf) {
if (!isa<PointerType>(Ptr)) return 0; // Type isn't a pointer type!
// Handle the special case of the empty set index set...
if (Idx.empty()) return cast<PointerType>(Ptr)->getElementType();
unsigned CurIDX = 0;
while (const CompositeType *CT = dyn_cast<CompositeType>(Ptr)) {
if (Idx.size() == CurIDX) {
if (AllowCompositeLeaf || CT->isFirstClassType()) return Ptr;
return 0; // Can't load a whole structure or array!?!?
}
Value *Index = Idx[CurIDX++];
if (!CT->indexValid(Index)) return 0;
Ptr = CT->getTypeAtIndex(Index);
}
return CurIDX == Idx.size() ? Ptr : 0;
}
//===----------------------------------------------------------------------===//
// FreeInst Implementation