-//===-- iMemory.cpp - Implement Memory instructions --------------*- C++ -*--=//
+//===-- iMemory.cpp - Implement Memory instructions -----------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
// This file implements the various memory related classes defined in iMemory.h
//
//===----------------------------------------------------------------------===//
#include "llvm/iMemory.h"
-#include "llvm/ConstPoolVals.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+using namespace llvm;
-//===----------------------------------------------------------------------===//
-// MemAccessInst Implementation
-//===----------------------------------------------------------------------===//
+void AllocationInst::init(const Type *Ty, Value *ArraySize, unsigned iTy)
+{
+ // ArraySize defaults to 1.
+ if (!ArraySize) ArraySize = ConstantUInt::get(Type::UIntTy, 1);
-// 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<Value*> &Idx,
- bool AllowCompositeLeaf = false) {
- if (!Ptr->isPointerType()) return 0; // Type isn't a pointer type!
-
- // Get the type pointed to...
- Ptr = cast<PointerType>(Ptr)->getValueType();
-
- unsigned CurIDX = 0;
- while (const CompositeType *ST = dyn_cast<CompositeType>(Ptr)) {
- if (Idx.size() == CurIDX)
- return AllowCompositeLeaf ? Ptr : 0; // Can't load a whole structure!?!?
-
- Value *Index = Idx[CurIDX++];
- if (!ST->indexValid(Index)) return 0;
- Ptr = ST->getTypeAtIndex(Index);
- }
- return CurIDX == Idx.size() ? Ptr : 0;
+ Operands.reserve(1);
+ assert(ArraySize->getType() == Type::UIntTy &&
+ "Malloc/Allocation array size != UIntTy!");
+
+ Operands.push_back(Use(ArraySize, this));
+}
+
+AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
+ const std::string &Name,
+ Instruction *InsertBefore)
+ : Instruction(PointerType::get(Ty), iTy, Name, InsertBefore) {
+ init(Ty, ArraySize, iTy);
}
-const vector<ConstPoolVal*> MemAccessInst::getIndicesBROKEN() const {
- cerr << "MemAccessInst::getIndices() does not do what you want it to. Talk"
- << " to Chris about this. We can phase it out after the paper.\n";
+AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy,
+ const std::string &Name,
+ BasicBlock *InsertAtEnd)
+ : Instruction(PointerType::get(Ty), iTy, Name, InsertAtEnd) {
+ init(Ty, ArraySize, iTy);
+}
- vector<ConstPoolVal*> RetVal;
+bool AllocationInst::isArrayAllocation() const {
+ return getOperand(0) != ConstantUInt::get(Type::UIntTy, 1);
+}
- // THIS CODE WILL FAIL IF A NON CONSTANT INDEX IS USED AS AN ARRAY INDEX
- // THIS IS WHY YOU SHOULD NOT USE THIS FUNCTION ANY MORE!!!
- for (unsigned i = getFirstIndexOperandNumber(); i < getNumOperands(); ++i)
- RetVal.push_back(cast<ConstPoolVal>(getOperand(i)));
+const Type *AllocationInst::getAllocatedType() const {
+ return getType()->getElementType();
+}
- return RetVal;
+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) {
+}
//===----------------------------------------------------------------------===//
-// LoadInst Implementation
+// FreeInst Implementation
//===----------------------------------------------------------------------===//
-LoadInst::LoadInst(Value *Ptr, const vector<Value*> &Idx,
- const string &Name = "")
- : MemAccessInst(getIndexedType(Ptr->getType(), Idx), Load, Name) {
- assert(getIndexedType(Ptr->getType(), Idx) && "Load operands invalid!");
- Operands.reserve(1+Idx.size());
+void FreeInst::init(Value *Ptr)
+{
+ assert(Ptr && isa<PointerType>(Ptr->getType()) && "Can't free nonpointer!");
+ 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));
-
}
-LoadInst::LoadInst(Value *Ptr, const string &Name = "")
- : MemAccessInst(cast<PointerType>(Ptr->getType())->getValueType(),
- Load, Name) {
- Operands.reserve(1);
- Operands.push_back(Use(Ptr, this));
+FreeInst::FreeInst(Value *Ptr, Instruction *InsertBefore)
+ : Instruction(Type::VoidTy, Free, "", InsertBefore) {
+ init(Ptr);
+}
+
+FreeInst::FreeInst(Value *Ptr, BasicBlock *InsertAtEnd)
+ : Instruction(Type::VoidTy, Free, "", InsertAtEnd) {
+ init(Ptr);
}
+//===----------------------------------------------------------------------===//
+// LoadInst Implementation
+//===----------------------------------------------------------------------===//
+
+LoadInst::LoadInst(Value *Ptr, const std::string &Name, Instruction *InsertBef)
+ : Instruction(cast<PointerType>(Ptr->getType())->getElementType(),
+ Load, Name, InsertBef), Volatile(false) {
+ init(Ptr);
+}
+
+LoadInst::LoadInst(Value *Ptr, const std::string &Name, BasicBlock *InsertAE)
+ : Instruction(cast<PointerType>(Ptr->getType())->getElementType(),
+ Load, Name, InsertAE), Volatile(false) {
+ init(Ptr);
+}
+
+LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
+ Instruction *InsertBef)
+ : Instruction(cast<PointerType>(Ptr->getType())->getElementType(),
+ Load, Name, InsertBef), Volatile(isVolatile) {
+ init(Ptr);
+}
+
+LoadInst::LoadInst(Value *Ptr, const std::string &Name, bool isVolatile,
+ BasicBlock *InsertAE)
+ : Instruction(cast<PointerType>(Ptr->getType())->getElementType(),
+ Load, Name, InsertAE), Volatile(isVolatile) {
+ init(Ptr);
+}
+
//===----------------------------------------------------------------------===//
// StoreInst Implementation
//===----------------------------------------------------------------------===//
-StoreInst::StoreInst(Value *Val, Value *Ptr, const vector<Value*> &Idx,
- const string &Name = "")
- : MemAccessInst(Type::VoidTy, Store, Name) {
- assert(getIndexedType(Ptr->getType(), Idx) && "Store operands invalid!");
-
- Operands.reserve(2+Idx.size());
- Operands.push_back(Use(Val, this));
- Operands.push_back(Use(Ptr, this));
+StoreInst::StoreInst(Value *Val, Value *Ptr, Instruction *InsertBefore)
+ : Instruction(Type::VoidTy, Store, "", InsertBefore), Volatile(false) {
+ init(Val, Ptr);
+}
- for (unsigned i = 0, E = Idx.size(); i != E; ++i)
- Operands.push_back(Use(Idx[i], this));
+StoreInst::StoreInst(Value *Val, Value *Ptr, BasicBlock *InsertAtEnd)
+ : Instruction(Type::VoidTy, Store, "", InsertAtEnd), Volatile(false) {
+ init(Val, Ptr);
}
-StoreInst::StoreInst(Value *Val, Value *Ptr, const string &Name = "")
- : MemAccessInst(Type::VoidTy, Store, Name) {
-
- Operands.reserve(2);
- Operands.push_back(Use(Val, this));
- Operands.push_back(Use(Ptr, this));
+StoreInst::StoreInst(Value *Val, Value *Ptr, bool isVolatile,
+ Instruction *InsertBefore)
+ : Instruction(Type::VoidTy, Store, "", InsertBefore), Volatile(isVolatile) {
+ init(Val, Ptr);
+}
+
+StoreInst::StoreInst(Value *Val, Value *Ptr, bool isVolatile,
+ BasicBlock *InsertAtEnd)
+ : Instruction(Type::VoidTy, Store, "", InsertAtEnd), Volatile(isVolatile) {
+ init(Val, Ptr);
}
// GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//
-GetElementPtrInst::GetElementPtrInst(Value *Ptr, const vector<Value*> &Idx,
- const string &Name = "")
- : MemAccessInst(PointerType::get(getIndexedType(Ptr->getType(), Idx, true)),
- GetElementPtr, Name) {
- assert(getIndexedType(Ptr->getType(), Idx, true) && "gep operands invalid!");
+// 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;
+}
+
+void GetElementPtrInst::init(Value *Ptr, const std::vector<Value*> &Idx)
+{
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();
+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) {
+ init(Ptr, Idx);
+}
+
+GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
+ const std::string &Name, BasicBlock *IAE)
+ : Instruction(PointerType::get(checkType(getIndexedType(Ptr->getType(),
+ Idx, true))),
+ GetElementPtr, Name, IAE) {
+ init(Ptr, Idx);
+}
+
+// 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())
+ if (AllowCompositeLeaf ||
+ cast<PointerType>(Ptr)->getElementType()->isFirstClassType())
+ return cast<PointerType>(Ptr)->getElementType();
+ else
+ return 0;
+
+ 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 (isa<PointerType>(CT) && CurIdx != 1)
+ return 0; // Can only index into pointer types at the first index!
+ if (!CT->indexValid(Index)) return 0;
+ Ptr = CT->getTypeAtIndex(Index);
+
+ // If the new type forwards to another type, then it is in the middle
+ // of being refined to another type (and hence, may have dropped all
+ // references to what it was using before). So, use the new forwarded
+ // type.
+ if (const Type * Ty = Ptr->getForwardedType()) {
+ Ptr = Ty;
+ }
+ }
+ return CurIdx == Idx.size() ? Ptr : 0;
}
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