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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.
#pragma once
#include "compiler.h"
#include "phase.h"
class StackLevelSetter : public Phase
{
public:
StackLevelSetter(Compiler* compiler);
virtual void DoPhase() override;
private:
void ProcessBlock(BasicBlock* block);
#if !FEATURE_FIXED_OUT_ARGS
void SetThrowHelperBlocks(GenTree* node, BasicBlock* block);
void SetThrowHelperBlock(SpecialCodeKind kind, BasicBlock* block);
#endif // !FEATURE_FIXED_OUT_ARGS
unsigned PopArgumentsFromCall(GenTreeCall* call);
void AddStackLevel(unsigned value);
void SubStackLevel(unsigned value);
void CheckArgCnt();
void CheckAdditionalArgs();
private:
unsigned currentStackLevel; // current number of stack slots used by arguments.
unsigned maxStackLevel; // max number of stack slots for arguments.
CompAllocator memAllocator;
typedef JitHashTable<GenTreePutArgStk*, JitPtrKeyFuncs<GenTreePutArgStk>, unsigned> PutArgNumSlotsMap;
PutArgNumSlotsMap putArgNumSlots; // The hash table keeps stack slot sizes for active GT_PUTARG_STK nodes.
#if !FEATURE_FIXED_OUT_ARGS
bool framePointerRequired; // Is frame pointer required based on the analysis made by this phase.
bool throwHelperBlocksUsed; // Were any throw helper blocks created for this method.
#endif // !FEATURE_FIXED_OUT_ARGS
};
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