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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2 91177308-0d34-0410-b5e6-96231b3b80d8
141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
//===-- llvm/iMemory.h - Memory Operator node definitions --------*- C++ -*--=//
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//
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// This file contains the declarations of all of the memory related operators.
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// This includes: malloc, free, alloca, load, store, getfield, putfield
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_IMEMORY_H
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#define LLVM_IMEMORY_H
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#include "llvm/Instruction.h"
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#include "llvm/DerivedTypes.h"
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#include "llvm/ConstPoolVals.h"
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class ConstPoolType;
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class AllocationInst : public Instruction {
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protected:
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UseTy<ConstPoolType> TyVal;
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Use ArraySize;
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public:
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AllocationInst(ConstPoolType *tyVal, Value *arrSize, unsigned iTy,
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const string &Name = "")
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: Instruction(tyVal->getValue(), iTy, Name),
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TyVal(tyVal, this), ArraySize(arrSize, this) {
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// Make sure they didn't try to specify a size for an invalid type...
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assert(arrSize == 0 ||
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(getType()->getValueType()->isArrayType() &&
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((const ArrayType*)getType()->getValueType())->isUnsized()) &&
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"Trying to allocate something other than unsized array, with size!");
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// Make sure that if a size is specified, that it is a uint!
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assert(arrSize == 0 || arrSize->getType() == Type::UIntTy &&
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"Malloc SIZE is not a 'uint'!");
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}
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inline ~AllocationInst() {}
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// getType - Overload to return most specific pointer type...
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inline const PointerType *getType() const {
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return (const PointerType*)Instruction::getType();
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}
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virtual Instruction *clone() const = 0;
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inline virtual void dropAllReferences() { TyVal = 0; ArraySize = 0; }
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virtual bool setOperand(unsigned i, Value *Val) {
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if (i == 0) {
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assert(!Val || Val->getValueType() == Value::ConstantVal);
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TyVal = (ConstPoolType*)Val;
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return true;
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} else if (i == 1) {
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// Make sure they didn't try to specify a size for an invalid type...
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assert(Val == 0 ||
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(getType()->getValueType()->isArrayType() &&
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((const ArrayType*)getType()->getValueType())->isUnsized()) &&
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"Trying to allocate something other than unsized array, with size!");
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// Make sure that if a size is specified, that it is a uint!
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assert(Val == 0 || Val->getType() == Type::UIntTy &&
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"Malloc SIZE is not a 'uint'!");
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ArraySize = Val;
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return true;
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}
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return false;
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}
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virtual unsigned getNumOperands() const { return 2; }
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virtual const Value *getOperand(unsigned i) const {
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return i == 0 ? TyVal : (i == 1 ? ArraySize : 0);
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}
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};
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class MallocInst : public AllocationInst {
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public:
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MallocInst(ConstPoolType *tyVal, Value *ArraySize = 0,
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const string &Name = "")
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: AllocationInst(tyVal, ArraySize, Instruction::Malloc, Name) {}
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inline ~MallocInst() {}
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virtual Instruction *clone() const {
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return new MallocInst(TyVal, ArraySize);
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}
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virtual string getOpcode() const { return "malloc"; }
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};
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class AllocaInst : public AllocationInst {
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public:
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AllocaInst(ConstPoolType *tyVal, Value *ArraySize = 0,
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const string &Name = "")
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: AllocationInst(tyVal, ArraySize, Instruction::Alloca, Name) {}
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inline ~AllocaInst() {}
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virtual Instruction *clone() const {
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return new AllocaInst(TyVal, ArraySize);
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}
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virtual string getOpcode() const { return "alloca"; }
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};
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class FreeInst : public Instruction {
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protected:
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Use Pointer;
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public:
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FreeInst(Value *Ptr, const string &Name = "")
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: Instruction(Type::VoidTy, Instruction::Free, Name),
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Pointer(Ptr, this) {
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assert(Ptr->getType()->isPointerType() && "Can't free nonpointer!");
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}
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inline ~FreeInst() {}
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virtual Instruction *clone() const { return new FreeInst(Pointer); }
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inline virtual void dropAllReferences() { Pointer = 0; }
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virtual bool setOperand(unsigned i, Value *Val) {
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if (i == 0) {
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assert(!Val || Val->getType()->isPointerType() &&
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"Can't free nonpointer!");
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Pointer = Val;
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return true;
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}
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return false;
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}
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virtual unsigned getNumOperands() const { return 1; }
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virtual const Value *getOperand(unsigned i) const {
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return i == 0 ? Pointer : 0;
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}
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virtual string getOpcode() const { return "free"; }
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};
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#endif // LLVM_IMEMORY_H
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