16188914472

Committed 10 Jul 2025 07:30AM UTC coverage: 64.808% (+0.1%) from 64.705%

Build # 16188914472

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Merge pull request #138 from daisytuner/tenstorrent/trivial

lib_stream -> lib_snippet_factory in code generation

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3 existing lines in 3 files now uncovered.

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64.79

/src/codegen/code_generators/cuda_code_generator.cpp

#include "sdfg/codegen/code_generators/cuda_code_generator.h"

#include "sdfg/codegen/dispatchers/node_dispatcher_registry.h"
#include "sdfg/codegen/instrumentation/instrumentation.h"
#include "sdfg/codegen/instrumentation/outermost_loops_instrumentation.h"

namespace sdfg {
namespace codegen {

CUDACodeGenerator::CUDACodeGenerator(
    StructuredSDFG& sdfg,
    InstrumentationStrategy instrumentation_strategy,
    bool capture_args_results,
    const std::pair<std::filesystem::path, std::filesystem::path>* output_and_header_paths
)
    : CodeGenerator(sdfg, instrumentation_strategy, capture_args_results, output_and_header_paths) {
    if (sdfg.type() != FunctionType_NV_GLOBAL) {
        throw std::runtime_error("CUDACodeGenerator can only be used for GPU SDFGs");
    }
    if (capture_args_results) {
        std::cerr << "CUDACodeGenerator does not support capturing args/results!";
    }
};

bool CUDACodeGenerator::generate() {
    this->dispatch_includes();
    this->dispatch_structures();
    this->dispatch_globals();
    this->dispatch_schedule();
    return true;
};

std::string CUDACodeGenerator::function_definition() {
    /********** Arglist **********/
    std::vector<std::string> args;
    for (auto& container : sdfg_.arguments()) {
        args.push_back(language_extension_.declaration(container, sdfg_.type(container)));
    }
    std::stringstream arglist;
    arglist << sdfg::helpers::join(args, ", ");

    return "extern \"C\" __global__ void " + sdfg_.name() + "(" + arglist.str() + ")";
};

bool CUDACodeGenerator::as_source(const std::filesystem::path& header_path, const std::filesystem::path& source_path) {
    std::ofstream ofs_header(header_path, std::ofstream::out);
    if (!ofs_header.is_open()) {
        return false;
    }

    std::ofstream ofs_source(source_path, std::ofstream::out);
    if (!ofs_source.is_open()) {
        return false;
    }

    ofs_header << "#pragma once" << std::endl;
    ofs_header << this->includes_stream_.str() << std::endl;
    ofs_header << this->classes_stream_.str() << std::endl;
    ofs_header.close();

    ofs_source << "#include \"" << header_path.filename().string() << "\"" << std::endl;

    ofs_source << this->globals_stream_.str() << std::endl;

    append_function_source(ofs_source);

    ofs_source.close();

    return true;
};

void CUDACodeGenerator::append_function_source(std::ofstream& ofs_source) {
    ofs_source << this->function_definition() << std::endl;
    ofs_source << "{" << std::endl;
    ofs_source << this->main_stream_.str() << std::endl;
    ofs_source << "}" << std::endl;
}

void CUDACodeGenerator::dispatch_includes() {
    this->includes_stream_ << "#define "
                           << "__DAISY_NVVM__" << std::endl;
    this->includes_stream_ << "#include "
                           << "\"daisyrtl.h\"" << std::endl;
    if (instrumentation_strategy_ != InstrumentationStrategy::NONE)
        this->includes_stream_ << "#include <daisy_rtl.h>" << std::endl;

    this->includes_stream_ << "#define __daisy_min(a,b) ((a)<(b)?(a):(b))" << std::endl;
    this->includes_stream_ << "#define __daisy_max(a,b) ((a)>(b)?(a):(b))" << std::endl;
    this->includes_stream_ << "#define __daisy_fma(a,b,c) a * b + c" << std::endl;
};

void CUDACodeGenerator::dispatch_structures() {
    // Forward declarations
    for (auto& structure : sdfg_.structures()) {
        this->classes_stream_ << "struct " << structure << ";" << std::endl;
    }

    // Generate topology-sorted structure definitions
    typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS> structures_graph;
    typedef boost::graph_traits<structures_graph>::vertex_descriptor Vertex;
    std::vector<std::string> names;
    for (auto& structure : sdfg_.structures()) {
        names.push_back(structure);
    }
    structures_graph graph(names.size());

    for (auto& structure : names) {
        auto& definition = sdfg_.structure(structure);
        for (size_t i = 0; i < definition.num_members(); i++) {
            auto member_type = &definition.member_type(symbolic::integer(i));
            while (dynamic_cast<const types::Array*>(member_type)) {
                auto array_type = static_cast<const types::Array*>(member_type);
                member_type = &array_type->element_type();
            }

            if (auto member_structure = dynamic_cast<const sdfg::types::Structure*>(member_type)) {
                boost::add_edge(
                    std::find(names.begin(), names.end(), member_structure->name()) - names.begin(),
                    std::find(names.begin(), names.end(), structure) - names.begin(),
                    graph
                );
            }
        }
    }

    std::list<Vertex> order;
    std::unordered_map<Vertex, boost::default_color_type> vertex_colors;
    boost::topological_sort(
        graph, std::back_inserter(order), boost::color_map(boost::make_assoc_property_map(vertex_colors))
    );
    order.reverse();

    for (auto& structure_index : order) {
        std::string structure = names.at(structure_index);
        auto& definition = sdfg_.structure(structure);
        this->classes_stream_ << "struct ";
        if (definition.is_packed()) {
            this->classes_stream_ << "__attribute__((packed)) ";
        }
        this->classes_stream_ << structure << std::endl;
        this->classes_stream_ << "{\n";

        for (size_t i = 0; i < definition.num_members(); i++) {
            auto& member_type = definition.member_type(symbolic::integer(i));
            if (dynamic_cast<const sdfg::types::Structure*>(&member_type)) {
                this->classes_stream_ << "struct ";
            }
            this->classes_stream_
                << language_extension_.declaration("member_" + std::to_string(i), member_type, false, true);
            this->classes_stream_ << ";" << std::endl;
        }

        this->classes_stream_ << "};" << std::endl;
    }
};

void CUDACodeGenerator::dispatch_globals() {
    for (auto& container : sdfg_.externals()) {
        auto& type = sdfg_.type(container);
        if (type.storage_type() == types::StorageType_NV_Global) {
            this->globals_stream_ << "extern " << language_extension_.declaration(container, type) << ";" << std::endl;
        }
        if (type.storage_type() == types::StorageType_NV_Constant) {
            assert(type.initializer().empty());
            this->globals_stream_ << "__constant__ " << language_extension_.declaration(container, type, true) << ";"
                                  << std::endl;
        }
    }
};

void CUDACodeGenerator::dispatch_schedule() {
    // Declare shared memory
    for (auto& container : sdfg_.externals()) {
        auto& type = sdfg_.type(container);
        if (type.storage_type() == types::StorageType_NV_Shared) {
            this->main_stream_ << language_extension_.declaration(container, sdfg_.type(container)) << ";" << std::endl;
        }
    }

    // Map external variables to internal variables
    for (auto& container : sdfg_.containers()) {
        if (!sdfg_.is_internal(container)) {
            continue;
        }

        std::string external_name = container.substr(0, container.length() - external_suffix.length());
        this->main_stream_ << language_extension_.declaration(container, sdfg_.type(container));
        this->main_stream_ << " = "
                           << "&" << external_name;
        this->main_stream_ << ";" << std::endl;
    }

    // Declare transient containers
    for (auto& container : sdfg_.containers()) {
        if (!sdfg_.is_transient(container)) {
            continue;
        }

        std::string val = this->language_extension_.declaration(container, sdfg_.type(container), false, true);
        if (!val.empty()) {
            this->main_stream_ << val;
            this->main_stream_ << ";" << std::endl;
        }
    }

    // Add instrumentation
    auto instrumentation = create_instrumentation(instrumentation_strategy_, sdfg_);

    auto dispatcher = create_dispatcher(language_extension_, sdfg_, sdfg_.root(), *instrumentation);
    dispatcher->dispatch(this->main_stream_, this->globals_stream_, this->library_snippet_factory_);
};

} // namespace codegen
} // namespace sdfg

1	#include "sdfg/codegen/code_generators/cuda_code_generator.h"
2
3	#include "sdfg/codegen/dispatchers/node_dispatcher_registry.h"
4	#include "sdfg/codegen/instrumentation/instrumentation.h"
5	#include "sdfg/codegen/instrumentation/outermost_loops_instrumentation.h"
6
7	namespace sdfg {
8	namespace codegen {
9
10	CUDACodeGenerator::CUDACodeGenerator(	10✔
11	StructuredSDFG& sdfg,
12	InstrumentationStrategy instrumentation_strategy,
13	bool capture_args_results,
14	const std::pair<std::filesystem::path, std::filesystem::path>* output_and_header_paths
15	)
16	: CodeGenerator(sdfg, instrumentation_strategy, capture_args_results, output_and_header_paths) {	5✔
17	if (sdfg.type() != FunctionType_NV_GLOBAL) {	5✔
18	throw std::runtime_error("CUDACodeGenerator can only be used for GPU SDFGs");	×
19	}
20	if (capture_args_results) {	5✔
21	std::cerr << "CUDACodeGenerator does not support capturing args/results!";	×
22	}	×
23	};	5✔
24
25	bool CUDACodeGenerator::generate() {	4✔
26	this->dispatch_includes();	4✔
27	this->dispatch_structures();	4✔
28	this->dispatch_globals();	4✔
29	this->dispatch_schedule();	4✔
30	return true;	4✔
31	};
32
33	std::string CUDACodeGenerator::function_definition() {	1✔
34	/******** Arglist ********/
35	std::vector<std::string> args;	1✔
36	for (auto& container : sdfg_.arguments()) {	1✔
37	args.push_back(language_extension_.declaration(container, sdfg_.type(container)));	×
38	}
39	std::stringstream arglist;	1✔
40	arglist << sdfg::helpers::join(args, ", ");	1✔
41
42	return "extern \"C\" __global__ void " + sdfg_.name() + "(" + arglist.str() + ")";	1✔
43	};	1✔
44
NEW 45	bool CUDACodeGenerator::as_source(const std::filesystem::path& header_path, const std::filesystem::path& source_path) {	×
UNCOV 46	std::ofstream ofs_header(header_path, std::ofstream::out);	×
47	if (!ofs_header.is_open()) {	×
48	return false;	×
49	}
50
51	std::ofstream ofs_source(source_path, std::ofstream::out);	×
52	if (!ofs_source.is_open()) {	×
53	return false;	×
54	}
55
56	ofs_header << "#pragma once" << std::endl;	×
57	ofs_header << this->includes_stream_.str() << std::endl;	×
58	ofs_header << this->classes_stream_.str() << std::endl;	×
59	ofs_header.close();	×
60
61	ofs_source << "#include \"" << header_path.filename().string() << "\"" << std::endl;	×
62
63	ofs_source << this->globals_stream_.str() << std::endl;	×
64
NEW 65	append_function_source(ofs_source);	×
66
NEW 67	ofs_source.close();	×
68
69	return true;	×
70	};	×
71
NEW 72	void CUDACodeGenerator::append_function_source(std::ofstream& ofs_source) {	×
NEW 73	ofs_source << this->function_definition() << std::endl;	×
NEW 74	ofs_source << "{" << std::endl;	×
NEW 75	ofs_source << this->main_stream_.str() << std::endl;	×
NEW 76	ofs_source << "}" << std::endl;	×
NEW 77	}	×
78
79	void CUDACodeGenerator::dispatch_includes() {	4✔
80	this->includes_stream_ << "#define "	4✔
81	<< "__DAISY_NVVM__" << std::endl;	4✔
82	this->includes_stream_ << "#include "	4✔
83	<< "\"daisyrtl.h\"" << std::endl;	4✔
84	if (instrumentation_strategy_ != InstrumentationStrategy::NONE)	4✔
85	this->includes_stream_ << "#include <daisy_rtl.h>" << std::endl;	×
86
87	this->includes_stream_ << "#define __daisy_min(a,b) ((a)<(b)?(a):(b))" << std::endl;	4✔
88	this->includes_stream_ << "#define __daisy_max(a,b) ((a)>(b)?(a):(b))" << std::endl;	4✔
89	this->includes_stream_ << "#define __daisy_fma(a,b,c) a * b + c" << std::endl;	4✔
90	};	4✔
91
92	void CUDACodeGenerator::dispatch_structures() {	4✔
93	// Forward declarations
94	for (auto& structure : sdfg_.structures()) {	7✔
95	this->classes_stream_ << "struct " << structure << ";" << std::endl;	3✔
96	}
97
98	// Generate topology-sorted structure definitions
99	typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::bidirectionalS> structures_graph;
100	typedef boost::graph_traits<structures_graph>::vertex_descriptor Vertex;
101	std::vector<std::string> names;	4✔
102	for (auto& structure : sdfg_.structures()) {	7✔
103	names.push_back(structure);	3✔
104	}
105	structures_graph graph(names.size());	4✔
106
107	for (auto& structure : names) {	7✔
108	auto& definition = sdfg_.structure(structure);	3✔
109	for (size_t i = 0; i < definition.num_members(); i++) {	6✔
110	auto member_type = &definition.member_type(symbolic::integer(i));	3✔
111	while (dynamic_cast<const types::Array*>(member_type)) {	3✔
112	auto array_type = static_cast<const types::Array*>(member_type);	×
113	member_type = &array_type->element_type();	×
114	}
115
116	if (auto member_structure = dynamic_cast<const sdfg::types::Structure*>(member_type)) {	3✔
117	boost::add_edge(	1✔
118	std::find(names.begin(), names.end(), member_structure->name()) - names.begin(),	1✔
119	std::find(names.begin(), names.end(), structure) - names.begin(),	1✔
120	graph
121	);
122	}	1✔
123	}	3✔
124	}
125
126	std::list<Vertex> order;	4✔
127	std::unordered_map<Vertex, boost::default_color_type> vertex_colors;	4✔
128	boost::topological_sort(	4✔
129	graph, std::back_inserter(order), boost::color_map(boost::make_assoc_property_map(vertex_colors))	4✔
130	);
131	order.reverse();	4✔
132
133	for (auto& structure_index : order) {	7✔
134	std::string structure = names.at(structure_index);	3✔
135	auto& definition = sdfg_.structure(structure);	3✔
136	this->classes_stream_ << "struct ";	3✔
137	if (definition.is_packed()) {	3✔
138	this->classes_stream_ << "__attribute__((packed)) ";	×
139	}	×
140	this->classes_stream_ << structure << std::endl;	3✔
141	this->classes_stream_ << "{\n";	3✔
142
143	for (size_t i = 0; i < definition.num_members(); i++) {	6✔
144	auto& member_type = definition.member_type(symbolic::integer(i));	3✔
145	if (dynamic_cast<const sdfg::types::Structure*>(&member_type)) {	3✔
146	this->classes_stream_ << "struct ";	1✔
147	}	1✔
148	this->classes_stream_	6✔
149	<< language_extension_.declaration("member_" + std::to_string(i), member_type, false, true);	3✔
150	this->classes_stream_ << ";" << std::endl;	3✔
151	}	3✔
152
153	this->classes_stream_ << "};" << std::endl;	3✔
154	}	3✔
155	};	4✔
156
157	void CUDACodeGenerator::dispatch_globals() {	4✔
158	for (auto& container : sdfg_.externals()) {	5✔
159	auto& type = sdfg_.type(container);	1✔
160	if (type.storage_type() == types::StorageType_NV_Global) {	1✔
161	this->globals_stream_ << "extern " << language_extension_.declaration(container, type) << ";" << std::endl;	1✔
162	}	1✔
163	if (type.storage_type() == types::StorageType_NV_Constant) {	1✔
164	assert(type.initializer().empty());	×
NEW 165	this->globals_stream_ << "__constant__ " << language_extension_.declaration(container, type, true) << ";"	×
166	<< std::endl;	×
167	}	×
168	}
169	};	4✔
170
171	void CUDACodeGenerator::dispatch_schedule() {	4✔
172	// Declare shared memory
173	for (auto& container : sdfg_.externals()) {	5✔
174	auto& type = sdfg_.type(container);	1✔
175	if (type.storage_type() == types::StorageType_NV_Shared) {	1✔
NEW 176	this->main_stream_ << language_extension_.declaration(container, sdfg_.type(container)) << ";" << std::endl;	×
177	}	×
178	}
179
180	// Map external variables to internal variables
181	for (auto& container : sdfg_.containers()) {	5✔
182	if (!sdfg_.is_internal(container)) {	1✔
183	continue;	1✔
184	}
185
NEW 186	std::string external_name = container.substr(0, container.length() - external_suffix.length());	×
187	this->main_stream_ << language_extension_.declaration(container, sdfg_.type(container));	×
188	this->main_stream_ << " = "	×
189	<< "&" << external_name;	×
190	this->main_stream_ << ";" << std::endl;	×
191	}	×
192
193	// Declare transient containers
194	for (auto& container : sdfg_.containers()) {	5✔
195	if (!sdfg_.is_transient(container)) {	1✔
196	continue;	1✔
197	}
198
NEW 199	std::string val = this->language_extension_.declaration(container, sdfg_.type(container), false, true);	×
200	if (!val.empty()) {	×
201	this->main_stream_ << val;	×
202	this->main_stream_ << ";" << std::endl;	×
203	}	×
204	}	×
205
206	// Add instrumentation
207	auto instrumentation = create_instrumentation(instrumentation_strategy_, sdfg_);	4✔
208
209	auto dispatcher = create_dispatcher(language_extension_, sdfg_, sdfg_.root(), *instrumentation);	4✔
210	dispatcher->dispatch(this->main_stream_, this->globals_stream_, this->library_snippet_factory_);	4✔
211	};	4✔
212
213	} // namespace codegen
214	} // namespace sdfg

daisytuner / sdfglib / 16188914472

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