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// slang-ir-inst-pass-base.h
#pragma once
#include "slang-ir-dce.h"
#include "slang-ir-insts.h"
#include "slang-ir.h"
namespace Slang
{
struct IRModule;
class InstPassBase
{
protected:
IRModule* module;
InstWorkList workList;
InstHashSet workListSet;
void addToWorkList(IRInst* inst)
{
SLANG_ASSERT(inst);
if (workListSet.contains(inst))
return;
workList.add(inst);
workListSet.add(inst);
}
IRInst* pop(bool removeFromSet = true)
{
if (workList.getCount() == 0)
return nullptr;
IRInst* inst = workList.getLast();
workList.removeLast();
if (removeFromSet)
workListSet.remove(inst);
return inst;
}
public:
InstPassBase(IRModule* inModule)
: module(inModule), workList(inModule), workListSet(inModule)
{
}
template<typename InstType, typename Func>
void processInstsOfType(IROp instOp, const Func& f)
{
workList.clear();
workListSet.clear();
addToWorkList(module->getModuleInst());
while (workList.getCount() != 0)
{
IRInst* inst = pop();
if (inst->getOp() == instOp)
{
f(as<InstType>(inst));
}
for (auto child = inst->getLastChild(); child; child = child->getPrevInst())
{
addToWorkList(child);
}
}
}
template<typename InstType, typename Func>
void processChildInstsOfType(IROp instOp, IRInst* parent, const Func& f)
{
workList.clear();
workListSet.clear();
addToWorkList(parent);
while (workList.getCount() != 0)
{
IRInst* inst = pop();
if (inst->getOp() == instOp)
{
f(as<InstType>(inst));
}
for (auto child = inst->getLastChild(); child; child = child->getPrevInst())
{
addToWorkList(child);
}
}
}
template<typename Func>
void processChildInsts(IRInst* root, const Func& f)
{
workList.clear();
workListSet.clear();
addToWorkList(root);
while (workList.getCount() != 0)
{
IRInst* inst = pop();
f(inst);
for (auto child = inst->getLastChild(); child; child = child->getPrevInst())
{
addToWorkList(child);
}
}
}
template<typename Func>
void processAllInsts(const Func& f)
{
processChildInsts(module->getModuleInst(), f);
}
template<typename Func>
void processAllReachableInsts(const Func& f)
{
workList.clear();
workListSet.clear();
addToWorkList(module->getModuleInst());
while (workList.getCount() != 0)
{
IRInst* inst = pop(false);
f(inst);
for (auto child = inst->getLastChild(); child; child = child->getPrevInst())
{
if (as<IRDecoration>(child))
break;
switch (child->getOp())
{
case kIROp_GenericSpecializationDictionary:
case kIROp_ExistentialFuncSpecializationDictionary:
case kIROp_ExistentialTypeSpecializationDictionary:
case kIROp_DebugInlinedAt:
case kIROp_DebugFunction:
continue;
default:
break;
}
SLANG_ASSERT(child);
if (shouldInstBeLiveIfParentIsLive(child, IRDeadCodeEliminationOptions()))
addToWorkList(child);
}
}
}
};
} // namespace Slang
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