/*
* Replace the op_par_loop with respective kernel function
*/
void OPSource::fixParLoops(SgNode *n)
{
SgName kernel_name;
SgFunctionCallExp *fn = isSgFunctionCallExp(n);
if(fn != NULL)
{
string fn_name = fn->getAssociatedFunctionDeclaration()->get_name().getString();
if(fn_name.compare("op_par_loop_2")==0
|| fn_name.compare("op_par_loop_3")==0
|| fn_name.compare("op_par_loop_4")==0
|| fn_name.compare("op_par_loop_5")==0
|| fn_name.compare("op_par_loop_6")==0
|| fn_name.compare("op_par_loop_7")==0
|| fn_name.compare("op_par_loop_8")==0
|| fn_name.compare("op_par_loop_9")==0)
{
SgExprListExp* exprList = fn->get_args();
SgExpressionPtrList &exprs = exprList->get_expressions();
SgFunctionRefExp* varExp = isSgFunctionRefExp(exprs[0]);
if(varExp != NULL)
{
kernel_name = varExp->get_symbol()->get_name();
}
exprs.erase(exprs.begin());
SgExpressionPtrList::iterator it = exprs.begin() + op_par_loop_args::num_params - 1;
for(; it != exprs.end(); it += op_argument::num_params)
{
*it = buildCastExp( *it, buildPointerType(SgClassType::createType( buildStructDeclaration("op_dat<void>"))) );
}
// Inject Name
exprs.insert(exprs.begin(), buildStringVal(kernel_name));
// Fetch the declaration
SgName name = SgName("op_par_loop_") + kernel_name;
SgFunctionDeclaration *funcDecl = cudaFunctionDeclarations[kernel_name];
if(funcDecl)
{
SgFunctionRefExp* ref = isSgFunctionRefExp(fn->get_function());
SgFunctionSymbol *symbol = ref->get_symbol();
symbol->set_declaration(funcDecl);
ref->set_symbol(symbol);
fn->set_function(ref);
}
}
}
}
/*!
* \brief Creates a new outlined-function parameter for a given
* variable. The requirement is to preserve data read/write semantics.
*
* For C/C++: we use pointer dereferencing to implement pass-by-reference
* In a recent implementation, side effect analysis is used to find out
* variables which are not modified so pointer types are not used.
*
*
* Given a variable (i.e., its type and name) whose references are to
* be outlined, create a suitable outlined-function parameter.
* For C/C++, the parameter is created as a pointer, to support parameter passing of
* aggregate types in C programs.
* Moreover, the type is made 'void' if the base type is not a primitive type.
*
* An original type may need adjustments before we can make a pointer type from it.
* For example:
* a)Array types from a function parameter: its first dimension is auto converted to a pointer type
*
* b) Pointer to a C++ reference type is illegal, we create a pointer to its
* base type in this case. It also match the semantics for addressof(refType)
*
*
* The implementation follows two steps:
* step 1: adjust a variable's base type
* step 2: decide on its function parameter type
* Liao, 8/14/2009
*/
static OutlinedFuncParam_t createParam (const SgInitializedName* i_name, bool readOnly=false)
{
ROSE_ASSERT (i_name);
SgType* init_type = i_name->get_type();
ROSE_ASSERT (init_type);
// Stores the real parameter type to be used in new_param_type
string init_name = i_name->get_name ().str ();
SgType* param_base_type;
//has to be not scalar
if(isSgArrayType (init_type) ){
SgType* base_type = init_type->findBaseType();
param_base_type = buildPointerType(base_type);
}
else if (isSgPointerType (init_type))
{
//Didem, this used to be 2 but I changed into 0. Didn't make any sense
init_name = init_name.substr(0);
//Didem: I have changed the types into 1D pointer type
SgType* base_type = init_type->findBaseType();
param_base_type = buildPointerType(base_type);
//param_base_type = init_type;
}
else{
param_base_type = init_type;
}
// The parameter name reflects the type: the same name means the same type,
// p__ means a pointer type
string new_param_name = init_name;
SgType* new_param_type = NULL;
// For classic behavior, read only variables are passed by values for C/C++
// They share the same name and type
if (Outliner::enable_classic)
{
// read only parameter: pass-by-value, the same type and name
// shared parameters : already pointer type
//if (readOnly)
{
new_param_type = param_base_type;
}
/*
else
{
new_param_name= "d__" + new_param_name;
new_param_type = SgPointerType::createType (param_base_type);
}*/
}
else // very conservative one, assume the worst side effects (all are written)
{
new_param_name= new_param_name;
}
// So use base type directly
// C/C++ parameters will use their new param type to implement pass-by-reference
return OutlinedFuncParam_t (new_param_name, new_param_type);
}
