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#include "slang-emit-base.h"
namespace Slang
{
IRInst* SourceEmitterBase::getSpecializedValue(IRSpecialize* specInst)
{
auto base = specInst->getBase();
// It is possible to have a `specialize(...)` where the first
// operand is also a `specialize(...)`, so that we need to
// look at what declaration is being specialized at the inner
// step to find the one being specialized at the outer step.
//
while (auto baseSpecialize = as<IRSpecialize>(base))
{
base = getSpecializedValue(baseSpecialize);
}
auto baseGeneric = as<IRGeneric>(base);
if (!baseGeneric)
return base;
auto lastBlock = baseGeneric->getLastBlock();
if (!lastBlock)
return base;
auto returnInst = as<IRReturn>(lastBlock->getTerminator());
if (!returnInst)
return base;
return returnInst->getVal();
}
void SourceEmitterBase::handleRequiredCapabilities(IRInst* inst)
{
auto decoratedValue = inst;
while (auto specInst = as<IRSpecialize>(decoratedValue))
{
decoratedValue = getSpecializedValue(specInst);
}
handleRequiredCapabilitiesImpl(decoratedValue);
}
IRVarLayout* SourceEmitterBase::getVarLayout(IRInst* var)
{
auto decoration = var->findDecoration<IRLayoutDecoration>();
if (!decoration)
return nullptr;
return as<IRVarLayout>(decoration->getLayout());
}
BaseType SourceEmitterBase::extractBaseType(IRType* inType)
{
auto type = inType;
for (;;)
{
if (auto irBaseType = as<IRBasicType>(type))
{
return irBaseType->getBaseType();
}
else if (auto vecType = as<IRVectorType>(type))
{
type = vecType->getElementType();
continue;
}
else
{
return BaseType::Void;
}
}
}
}
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