//===----------------------------------------------------------------------===//
#include "llvm/iMemory.h"
-#include "llvm/ConstPoolVals.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+
+AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
+ const std::string &Name, Instruction *InsertBef)
+ : Instruction(PointerType::get(Ty), iTy, Name, InsertBef) {
+
+ // ArraySize defaults to 1.
+ if (!ArraySize) ArraySize = ConstantUInt::get(Type::UIntTy, 1);
+
+ Operands.reserve(1);
+ assert(ArraySize->getType() == Type::UIntTy &&
+ "Malloc/Allocation array size != UIntTy!");
+
+ Operands.push_back(Use(ArraySize, this));
+}
+
+bool AllocationInst::isArrayAllocation() const {
+ return getOperand(0) != ConstantUInt::get(Type::UIntTy, 1);
+}
+
+const Type *AllocationInst::getAllocatedType() const {
+ return getType()->getElementType();
+}
+
+AllocaInst::AllocaInst(const AllocaInst &AI)
+ : AllocationInst(AI.getType()->getElementType(), (Value*)AI.getOperand(0),
+ Instruction::Alloca) {
+}
+
+MallocInst::MallocInst(const MallocInst &MI)
+ : AllocationInst(MI.getType()->getElementType(), (Value*)MI.getOperand(0),
+ Instruction::Malloc) {
+}
//===----------------------------------------------------------------------===//
-// MemAccessInst Implementation
+// FreeInst 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 vector<ConstPoolVal*> &Idx,
- bool AllowStructLeaf = false) {
- if (!Ptr->isPointerType()) return 0; // Type isn't a pointer type!
-
- // Get the type pointed to...
- Ptr = ((const PointerType*)Ptr)->getValueType();
-
- if (Ptr->isStructType()) {
- unsigned CurIDX = 0;
- while (Ptr->isStructType()) {
- if (Idx.size() == CurIDX)
- return AllowStructLeaf ? Ptr : 0; // Can't load a whole structure!?!?
- if (Idx[CurIDX]->getType() != Type::UByteTy) return 0; // Illegal idx
- unsigned NextIdx = ((ConstPoolUInt*)Idx[CurIDX++])->getValue();
-
- const StructType *ST = (const StructType *)Ptr;
- Ptr = ST->getElementTypes()[NextIdx];
- }
- return Ptr;
- } else if (Ptr->isArrayType()) {
- assert(0 && "Loading from arrays not implemented yet!");
- } else {
- return (Idx.size() == 0) ? Ptr : 0; // Load directly through ptr
- }
+FreeInst::FreeInst(Value *Ptr, Instruction *InsertBefore)
+ : Instruction(Type::VoidTy, Free, "", InsertBefore) {
+ assert(isa<PointerType>(Ptr->getType()) && "Can't free nonpointer!");
+ Operands.reserve(1);
+ Operands.push_back(Use(Ptr, this));
}
// LoadInst Implementation
//===----------------------------------------------------------------------===//
-LoadInst::LoadInst(Value *Ptr, const vector<ConstPoolVal*> &Idx,
- const string &Name = "")
- : MemAccessInst(getIndexedType(Ptr->getType(), Idx), Load, Name) {
- assert(getIndexedType(Ptr->getType(), Idx) && "Load operands invalid!");
- Operands.reserve(1+Idx.size());
+LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef)
+ : Instruction(cast<PointerType>(Ptr->getType())->getElementType(),
+ Load, Name, InsertBef) {
+ Operands.reserve(1);
Operands.push_back(Use(Ptr, this));
-
- for (unsigned i = 0, E = Idx.size(); i != E; ++i)
- Operands.push_back(Use(Idx[i], this));
}
// StoreInst Implementation
//===----------------------------------------------------------------------===//
-StoreInst::StoreInst(Value *Val, Value *Ptr, const vector<ConstPoolVal*> &Idx,
- const string &Name = "")
- : MemAccessInst(Type::VoidTy, Store, Name) {
- assert(getIndexedType(Ptr->getType(), Idx) && "Store operands invalid!");
+StoreInst::StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore)
+ : Instruction(Type::VoidTy, Store, "", InsertBefore) {
- Operands.reserve(2+Idx.size());
+ Operands.reserve(2);
Operands.push_back(Use(Val, this));
Operands.push_back(Use(Ptr, this));
-
- for (unsigned i = 0, E = Idx.size(); i != E; ++i)
- Operands.push_back(Use(Idx[i], this));
}
// GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//
-GetElementPtrInst::GetElementPtrInst(Value *Ptr,
- const vector<ConstPoolVal*> &Idx,
- const string &Name = "")
- : MemAccessInst(PointerType::getPointerType(getIndexedType(Ptr->getType(),
- Idx, true)),
- GetElementPtr, Name) {
+// checkType - Simple wrapper function to give a better assertion failure
+// message on bad indexes for a gep instruction.
+//
+static inline const Type *checkType(const Type *Ty) {
+ assert(Ty && "Invalid indices for type!");
+ return Ty;
+}
+
+GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
+ const std::string &Name, Instruction *InBe)
+ : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),
+ Idx, true))),
+ GetElementPtr, Name, InBe) {
assert(getIndexedType(Ptr->getType(), Idx, true) && "gep operands invalid!");
Operands.reserve(1+Idx.size());
Operands.push_back(Use(Ptr, this));
Operands.push_back(Use(Idx[i], this));
}
-bool GetElementPtrInst::isStructSelector() const {
- return ((PointerType*)Operands[0]->getType())->getValueType()->isStructType();
+// 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;
}
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