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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/*XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XX XX
XX ObjectAllocator XX
XX XX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
*/
/*****************************************************************************/
#ifndef OBJECTALLOC_H
#define OBJECTALLOC_H
/*****************************************************************************/
//===============================================================================
#include "phase.h"
class ObjectAllocator final : public Phase
{
//===============================================================================
// Data members
bool m_IsObjectStackAllocationEnabled;
bool m_AnalysisDone;
//===============================================================================
// Methods
public:
ObjectAllocator(Compiler* comp);
bool IsObjectStackAllocationEnabled() const;
void EnableObjectStackAllocation();
protected:
virtual void DoPhase() override;
private:
bool CanAllocateLclVarOnStack(unsigned int lclNum) const;
void DoAnalysis();
void MorphAllocObjNodes();
GenTreePtr MorphAllocObjNodeIntoHelperCall(GenTreeAllocObj* allocObj);
GenTreePtr MorphAllocObjNodeIntoStackAlloc(GenTreeAllocObj* allocObj, BasicBlock* block, GenTreeStmt* stmt);
#ifdef DEBUG
static Compiler::fgWalkResult AssertWhenAllocObjFoundVisitor(GenTreePtr* pTree, Compiler::fgWalkData* data);
#endif // DEBUG
};
//===============================================================================
inline ObjectAllocator::ObjectAllocator(Compiler* comp)
: Phase(comp, "Allocate Objects", PHASE_ALLOCATE_OBJECTS)
, m_IsObjectStackAllocationEnabled(false)
, m_AnalysisDone(false)
{
}
inline bool ObjectAllocator::IsObjectStackAllocationEnabled() const
{
return m_IsObjectStackAllocationEnabled;
}
inline void ObjectAllocator::EnableObjectStackAllocation()
{
m_IsObjectStackAllocationEnabled = true;
}
//------------------------------------------------------------------------
// CanAllocateLclVarOnStack: Returns true iff local variable can not
// potentially escape from the method and
// can be allocated on the stack.
inline bool ObjectAllocator::CanAllocateLclVarOnStack(unsigned int lclNum) const
{
assert(m_AnalysisDone);
// TODO-ObjectStackAllocation
NYI("CanAllocateLclVarOnStack");
return false;
}
//===============================================================================
#endif // OBJECTALLOC_H
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