<commit_before>//===-- iMemory.cpp - Implement Memory instructions --------------*- C++ -*--=//
//
// This file implements the various memory related classes defined in iMemory.h
//
//===----------------------------------------------------------------------===//

#include "llvm/iMemory.h"
#include "llvm/ConstantVals.h"

static inline const Type *checkType(const Type *Ty) {
  assert(Ty && "Invalid indices for type!");
  return Ty;
}

AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, 
                               const std::string &Name = "")
  : Instruction(Ty, iTy, Name) {
  assert(Ty->isPointerType() && "Can't allocate a non pointer type!");

  // 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 getNumOperands() == 1 &&
         getOperand(0) != ConstantUInt::get(Type::UIntTy, 1);
}

//===----------------------------------------------------------------------===//
//                        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 = false) {
  if (!Ptr->isPointerType()) 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
//===----------------------------------------------------------------------===//

LoadInst::LoadInst(Value *Ptr, const std::vector<Value*> &Idx,
		   const std::string &Name = "")
  : MemAccessInst(checkType(getIndexedType(Ptr->getType(), Idx)), Load, Name) {
  assert(getIndexedType(Ptr->getType(), Idx) && "Load operands invalid!");
  Operands.reserve(1+Idx.size());
  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 std::string &Name = "")
  : MemAccessInst(cast<PointerType>(Ptr->getType())->getElementType(),
                  Load, Name) {
  Operands.reserve(1);
  Operands.push_back(Use(Ptr, this));
}


//===----------------------------------------------------------------------===//
//                           StoreInst Implementation
//===----------------------------------------------------------------------===//

StoreInst::StoreInst(Value *Val, Value *Ptr, const std::vector<Value*> &Idx,
		     const std::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));

  for (unsigned i = 0, E = Idx.size(); i != E; ++i)
    Operands.push_back(Use(Idx[i], this));
}

StoreInst::StoreInst(Value *Val, Value *Ptr, const std::string &Name = "")
  : MemAccessInst(Type::VoidTy, Store, Name) {
  
  Operands.reserve(2);
  Operands.push_back(Use(Val, this));
  Operands.push_back(Use(Ptr, this));
}


//===----------------------------------------------------------------------===//
//                       GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//

GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
				     const std::string &Name = "")
  : MemAccessInst(PointerType::get(checkType(getIndexedType(Ptr->getType(),
                                                            Idx, true))),
		  GetElementPtr, Name) {
  assert(getIndexedType(Ptr->getType(), Idx, true) && "gep operands invalid!");
  Operands.reserve(1+Idx.size());
  Operands.push_back(Use(Ptr, this));

  for (unsigned i = 0, E = Idx.size(); i != E; ++i)
    Operands.push_back(Use(Idx[i], this));
}

bool GetElementPtrInst::isStructSelector() const {
  return ((PointerType*)Operands[0]->getType())->getElementType()->isStructType();
}<commit_msg>Remove gep::isStructSelector CTor's do not allow names anymore for StoreInst objects<commit_after>//===-- iMemory.cpp - Implement Memory instructions --------------*- C++ -*--=//
//
// This file implements the various memory related classes defined in iMemory.h
//
//===----------------------------------------------------------------------===//

#include "llvm/iMemory.h"
#include "llvm/ConstantVals.h"

static inline const Type *checkType(const Type *Ty) {
  assert(Ty && "Invalid indices for type!");
  return Ty;
}

AllocationInst::AllocationInst(const Type *Ty, Value *ArraySize, unsigned iTy, 
                               const std::string &Name = "")
  : Instruction(Ty, iTy, Name) {
  assert(Ty->isPointerType() && "Can't allocate a non pointer type!");

  // 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 getNumOperands() == 1 &&
         getOperand(0) != ConstantUInt::get(Type::UIntTy, 1);
}

//===----------------------------------------------------------------------===//
//                        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 = false) {
  if (!Ptr->isPointerType()) 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
//===----------------------------------------------------------------------===//

LoadInst::LoadInst(Value *Ptr, const std::vector<Value*> &Idx,
		   const std::string &Name = "")
  : MemAccessInst(checkType(getIndexedType(Ptr->getType(), Idx)), Load, Name) {
  assert(getIndexedType(Ptr->getType(), Idx) && "Load operands invalid!");
  Operands.reserve(1+Idx.size());
  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 std::string &Name = "")
  : MemAccessInst(cast<PointerType>(Ptr->getType())->getElementType(),
                  Load, Name) {
  Operands.reserve(1);
  Operands.push_back(Use(Ptr, this));
}


//===----------------------------------------------------------------------===//
//                           StoreInst Implementation
//===----------------------------------------------------------------------===//

StoreInst::StoreInst(Value *Val, Value *Ptr, const std::vector<Value*> &Idx)
  : MemAccessInst(Type::VoidTy, Store, "") {
  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));

  for (unsigned i = 0, E = Idx.size(); i != E; ++i)
    Operands.push_back(Use(Idx[i], this));
}

StoreInst::StoreInst(Value *Val, Value *Ptr)
  : MemAccessInst(Type::VoidTy, Store, "") {
  
  Operands.reserve(2);
  Operands.push_back(Use(Val, this));
  Operands.push_back(Use(Ptr, this));
}


//===----------------------------------------------------------------------===//
//                       GetElementPtrInst Implementation
//===----------------------------------------------------------------------===//

GetElementPtrInst::GetElementPtrInst(Value *Ptr, const std::vector<Value*> &Idx,
				     const std::string &Name = "")
  : MemAccessInst(PointerType::get(checkType(getIndexedType(Ptr->getType(),
                                                            Idx, true))),
		  GetElementPtr, Name) {
  assert(getIndexedType(Ptr->getType(), Idx, true) && "gep operands invalid!");
  Operands.reserve(1+Idx.size());
  Operands.push_back(Use(Ptr, this));

  for (unsigned i = 0, E = Idx.size(); i != E; ++i)
    Operands.push_back(Use(Idx[i], this));
}
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