Method AllocFromType

IDEHelper/Compiler/BfModule.cpp:9849–10558

}

BfIRValue BfModule::AllocFromType(BfType* type, const BfAllocTarget& allocTarget, BfIRValue appendSizeValue, BfIRValue arraySize, int arrayDim, BfAllocFlags allocFlags, int alignOverride)
{
	BP_ZONE("AllocFromType");

	BfScopeData* scopeData = allocTarget.mScopeData;

	BF_ASSERT(!type->IsVar());

	auto typeInstance = type->ToTypeInstance();
	if ((typeInstance == NULL) && (type->IsGenericParam()))
		typeInstance = mContext->mBfObjectType;

	bool isHeapAlloc = scopeData == NULL;
	bool isScopeAlloc = scopeData != NULL;
	bool isLoopedAlloc = (scopeData != NULL) && (mCurMethodState->mCurScope->IsLooped(scopeData));
	bool isDynAlloc = (scopeData != NULL) && (mCurMethodState->mCurScope->IsDyn(scopeData));

	bool isRawArrayAlloc = (allocFlags & BfAllocFlags_RawArray) != 0;
	bool zeroMemory = (allocFlags & BfAllocFlags_ZeroMemory) != 0;
	bool noDtorCall = (allocFlags & BfAllocFlags_NoDtorCall) != 0;

	if ((type->IsValuelessType()) && ((!arraySize) || (isRawArrayAlloc)))
	{
		BfPointerType* ptrType = CreatePointerType(type);
		auto val = mBfIRBuilder->CreateIntToPtr(mBfIRBuilder->CreateConst(BfTypeCode_IntPtr, 1), mBfIRBuilder->MapType(ptrType));
		return val;
	}

	if (typeInstance != NULL)
		mBfIRBuilder->PopulateType(typeInstance);

	bool hasCustomAllocator = (allocTarget.mCustomAllocator) || (allocTarget.mScopedInvocationTarget != NULL);

	if ((!hasCustomAllocator) && (mBfIRBuilder->mIgnoreWrites))
	{
		return mBfIRBuilder->GetFakeVal();
	}

	AddDependency(type, mCurTypeInstance, BfDependencyMap::DependencyFlag_Allocates);

	BfIRValue sizeValue;
	BfIRType allocType = mBfIRBuilder->MapType(type);
	int allocSize = type->mSize;
	int allocAlign = type->mAlign;
	if (typeInstance != NULL)
	{
		if ((!mBfIRBuilder->mIgnoreWrites) && (!mIsComptimeModule))
			typeInstance->mHasBeenInstantiated = true;
		allocSize = typeInstance->mInstSize;
		allocAlign = typeInstance->mInstAlign;

		//if (typeInstance->IsEnum())
			//allocType = typeInstance->mIRType;
		allocType = mBfIRBuilder->MapTypeInst(typeInstance);
	}

	if (alignOverride != -1)
		allocAlign = alignOverride;