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Add --no-link option

Browse Source 
Adds the --no-link option which outputs the compiled shader binaries
without linking them. This is a first step towards allowing users to
create SPIR-v binary, non-executable libraries.

When using the --no-link option, all functions are decorated with the
Export linkage attribute.
This commit is contained in:
Nathaniel Cesario 2023-08-17 13:49:18 -06:00 committed by arcady-lunarg
parent a4aceb57de
commit 4c57db1595
24 changed files with 1671 additions and 1454 deletions
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41
SPIRV/GlslangToSpv.cpp
View File

@ -133,7 +133,7 @@ public:
bool visitLoop(glslang::TVisit, glslang::TIntermLoop*);
bool visitBranch(glslang::TVisit visit, glslang::TIntermBranch*);
void finishSpv();
void finishSpv(bool compileOnly);
void dumpSpv(std::vector<unsigned int>& out);
protected:
@ -167,6 +167,7 @@ protected:
bool filterMember(const glslang::TType& member);
spv::Id convertGlslangStructToSpvType(const glslang::TType&, const glslang::TTypeList* glslangStruct,
glslang::TLayoutPacking, const glslang::TQualifier&);
spv::LinkageType convertGlslangLinkageToSpv(glslang::TLinkType glslangLinkType);
void decorateStructType(const glslang::TType&, const glslang::TTypeList* glslangStruct, glslang::TLayoutPacking,
const glslang::TQualifier&, spv::Id, const std::vector<spv::Id>& spvMembers);
spv::Id makeArraySizeId(const glslang::TArraySizes&, int dim, bool allowZero = false);
@ -1588,8 +1589,12 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(unsigned int spvVersion,
builder.addCapability(spv::CapabilityVariablePointers);
}
// If not linking, there is no entry point
if (!options.compileOnly) {
shaderEntry = builder.makeEntryPoint(glslangIntermediate->getEntryPointName().c_str());
entryPoint = builder.addEntryPoint(executionModel, shaderEntry, glslangIntermediate->getEntryPointName().c_str());
entryPoint =
builder.addEntryPoint(executionModel, shaderEntry, glslangIntermediate->getEntryPointName().c_str());
}
// Add the source extensions
const auto& sourceExtensions = glslangIntermediate->getRequestedExtensions();
@ -1939,10 +1944,12 @@ TGlslangToSpvTraverser::TGlslangToSpvTraverser(unsigned int spvVersion,
}
// Finish creating SPV, after the traversal is complete.
void TGlslangToSpvTraverser::finishSpv()
void TGlslangToSpvTraverser::finishSpv(bool compileOnly)
{
// If not linking, an entry point is not expected
if (!compileOnly) {
// Finish the entry point function
if (! entryPointTerminated) {
if (!entryPointTerminated) {
builder.setBuildPoint(shaderEntry->getLastBlock());
builder.leaveFunction();
}
@ -1950,12 +1957,13 @@ void TGlslangToSpvTraverser::finishSpv()
// finish off the entry-point SPV instruction by adding the Input/Output <id>
for (auto it = iOSet.cbegin(); it != iOSet.cend(); ++it)
entryPoint->addIdOperand(*it);
}
// Add capabilities, extensions, remove unneeded decorations, etc.,
// based on the resulting SPIR-V.
// Note: WebGPU code generation must have the opportunity to aggressively
// prune unreachable merge blocks and continue targets.
builder.postProcess();
builder.postProcess(compileOnly);
}
// Write the SPV into 'out'.
@ -2840,9 +2848,12 @@ bool TGlslangToSpvTraverser::visitAggregate(glslang::TVisit visit, glslang::TInt
// In all cases, still let the traverser visit the children for us.
makeFunctions(node->getAsAggregate()->getSequence());
// Global initializers is specific to the shader entry point, which does not exist in compile-only mode
if (!options.compileOnly) {
// Also, we want all globals initializers to go into the beginning of the entry point, before
// anything else gets there, so visit out of order, doing them all now.
makeGlobalInitializers(node->getAsAggregate()->getSequence());
}
//Pre process linker objects for ray tracing stages
if (glslangIntermediate->isRayTracingStage())
@ -4329,6 +4340,16 @@ spv::Id TGlslangToSpvTraverser::convertGlslangToSpvType(const glslang::TType& ty
return convertGlslangToSpvType(type, getExplicitLayout(type), type.getQualifier(), false, forwardReferenceOnly);
}
spv::LinkageType TGlslangToSpvTraverser::convertGlslangLinkageToSpv(glslang::TLinkType linkType)
{
switch (linkType) {
case glslang::ELinkExport:
return spv::LinkageTypeExport;
default:
return spv::LinkageTypeMax;
}
}
// Do full recursive conversion of an arbitrary glslang type to a SPIR-V Id.
// explicitLayout can be kept the same throughout the hierarchical recursive walk.
// Mutually recursive with convertGlslangStructToSpvType().
@ -5396,10 +5417,10 @@ void TGlslangToSpvTraverser::makeFunctions(const glslang::TIntermSequence& glslF
}
spv::Block* functionBlock;
spv::Function *function = builder.makeFunctionEntry(TranslatePrecisionDecoration(glslFunction->getType()),
convertGlslangToSpvType(glslFunction->getType()),
glslFunction->getName().c_str(), paramTypes, paramNames,
paramDecorations, &functionBlock);
spv::Function* function = builder.makeFunctionEntry(
TranslatePrecisionDecoration(glslFunction->getType()), convertGlslangToSpvType(glslFunction->getType()),
glslFunction->getName().c_str(), convertGlslangLinkageToSpv(glslFunction->getLinkType()), paramTypes,
paramNames, paramDecorations, &functionBlock);
if (implicitThis)
function->setImplicitThis();
@ -10102,7 +10123,7 @@ void GlslangToSpv(const TIntermediate& intermediate, std::vector<unsigned int>&
TGlslangToSpvTraverser it(intermediate.getSpv().spv, &intermediate, logger, *options);
root->traverse(&it);
it.finishSpv();
it.finishSpv(options->compileOnly);
it.dumpSpv(spirv);
#if ENABLE_OPT

34
SPIRV/SpvBuilder.cpp
View File

@ -1835,6 +1835,10 @@ Instruction* Builder::addEntryPoint(ExecutionModel model, Function* function, co
// Currently relying on the fact that all 'value' of interest are small non-negative values.
void Builder::addExecutionMode(Function* entryPoint, ExecutionMode mode, int value1, int value2, int value3)
{
// entryPoint can be null if we are in compile-only mode
if (!entryPoint)
return;
Instruction* instr = new Instruction(OpExecutionMode);
instr->addIdOperand(entryPoint->getId());
instr->addImmediateOperand(mode);
@ -1850,6 +1854,10 @@ void Builder::addExecutionMode(Function* entryPoint, ExecutionMode mode, int val
void Builder::addExecutionMode(Function* entryPoint, ExecutionMode mode, const std::vector<unsigned>& literals)
{
// entryPoint can be null if we are in compile-only mode
if (!entryPoint)
return;
Instruction* instr = new Instruction(OpExecutionMode);
instr->addIdOperand(entryPoint->getId());
instr->addImmediateOperand(mode);
@ -1861,6 +1869,10 @@ void Builder::addExecutionMode(Function* entryPoint, ExecutionMode mode, const s
void Builder::addExecutionModeId(Function* entryPoint, ExecutionMode mode, const std::vector<Id>& operandIds)
{
// entryPoint can be null if we are in compile-only mode
if (!entryPoint)
return;
Instruction* instr = new Instruction(OpExecutionModeId);
instr->addIdOperand(entryPoint->getId());
instr->addImmediateOperand(mode);
@ -1944,6 +1956,16 @@ void Builder::addDecoration(Id id, Decoration decoration, const std::vector<cons
decorations.push_back(std::unique_ptr<Instruction>(dec));
}
void Builder::addLinkageDecoration(Id id, const char* name, spv::LinkageType linkType) {
Instruction* dec = new Instruction(OpDecorate);
dec->addIdOperand(id);
dec->addImmediateOperand(spv::DecorationLinkageAttributes);
dec->addStringOperand(name);
dec->addImmediateOperand(linkType);
decorations.push_back(std::unique_ptr<Instruction>(dec));
}
void Builder::addDecorationId(Id id, Decoration decoration, Id idDecoration)
{
if (decoration == spv::DecorationMax)
@ -2048,7 +2070,7 @@ Function* Builder::makeEntryPoint(const char* entryPoint)
emitNonSemanticShaderDebugInfo = false;
}
entryPointFunction = makeFunctionEntry(NoPrecision, returnType, entryPoint, paramsTypes, paramNames, decorations, &entry);
entryPointFunction = makeFunctionEntry(NoPrecision, returnType, entryPoint, LinkageTypeMax, paramsTypes, paramNames, decorations, &entry);
emitNonSemanticShaderDebugInfo = restoreNonSemanticShaderDebugInfo;
@ -2056,7 +2078,7 @@ Function* Builder::makeEntryPoint(const char* entryPoint)
}
// Comments in header
Function* Builder::makeFunctionEntry(Decoration precision, Id returnType, const char* name,
Function* Builder::makeFunctionEntry(Decoration precision, Id returnType, const char* name, LinkageType linkType,
const std::vector<Id>& paramTypes, const std::vector<char const*>& paramNames,
const std::vector<std::vector<Decoration>>& decorations, Block **entry)
{
@ -2064,7 +2086,7 @@ Function* Builder::makeFunctionEntry(Decoration precision, Id returnType, const
Id typeId = makeFunctionType(returnType, paramTypes);
Id firstParamId = paramTypes.size() == 0 ? 0 : getUniqueIds((int)paramTypes.size());
Id funcId = getUniqueId();
Function* function = new Function(funcId, returnType, typeId, firstParamId, module);
Function* function = new Function(funcId, returnType, typeId, firstParamId, linkType, name, module);
// Set up the precisions
setPrecision(function->getId(), precision);
@ -2234,6 +2256,12 @@ void Builder::enterFunction(Function const* function)
defInst->addIdOperand(funcId);
buildPoint->addInstruction(std::unique_ptr<Instruction>(defInst));
}
if (auto linkType = function->getLinkType(); linkType != LinkageTypeMax) {
Id funcId = function->getFuncId();
addCapability(CapabilityLinkage);
addLinkageDecoration(funcId, function->getExportName(), linkType);
}
}
// Comments in header

6
SPIRV/SpvBuilder.h
View File

@ -393,6 +393,7 @@ public:
void addDecoration(Id, Decoration, const char*);
void addDecoration(Id, Decoration, const std::vector<unsigned>& literals);
void addDecoration(Id, Decoration, const std::vector<const char*>& strings);
void addLinkageDecoration(Id id, const char* name, spv::LinkageType linkType);
void addDecorationId(Id id, Decoration, Id idDecoration);
void addDecorationId(Id id, Decoration, const std::vector<Id>& operandIds);
void addMemberDecoration(Id, unsigned int member, Decoration, int num = -1);
@ -417,7 +418,8 @@ public:
// Return the function, pass back the entry.
// The returned pointer is only valid for the lifetime of this builder.
Function* makeFunctionEntry(Decoration precision, Id returnType, const char* name,
const std::vector<Id>& paramTypes, const std::vector<char const*>& paramNames,
LinkageType linkType, const std::vector<Id>& paramTypes,
const std::vector<char const*>& paramNames,
const std::vector<std::vector<Decoration>>& precisions, Block **entry = nullptr);
// Create a return. An 'implicit' return is one not appearing in the source
@ -828,7 +830,7 @@ public:
// Add capabilities, extensions, remove unneeded decorations, etc.,
// based on the resulting SPIR-V.
void postProcess();
void postProcess(bool compileOnly);
// Prune unreachable blocks in the CFG and remove unneeded decorations.
void postProcessCFG();

6
SPIRV/SpvPostProcess.cpp
View File

@ -483,8 +483,12 @@ void Builder::postProcessFeatures() {
}
// comment in header
void Builder::postProcess() {
void Builder::postProcess(bool compileOnly)
{
// postProcessCFG needs an entrypoint to determine what is reachable, but if we are not creating an "executable" shader, we don't have an entrypoint
if (!compileOnly)
postProcessCFG();
postProcessFeatures();
}

1
SPIRV/SpvTools.h
View File

@ -61,6 +61,7 @@ struct SpvOptions {
bool validate {false};
bool emitNonSemanticShaderDebugInfo {false};
bool emitNonSemanticShaderDebugSource{ false };
bool compileOnly{false};
};
#if ENABLE_OPT

17
SPIRV/spvIR.h
View File

@ -323,7 +323,7 @@ void inReadableOrder(Block* root, std::function<void(Block*, ReachReason, Block*
class Function {
public:
Function(Id id, Id resultType, Id functionType, Id firstParam, Module& parent);
Function(Id id, Id resultType, Id functionType, Id firstParam, LinkageType linkage, const std::string& name, Module& parent);
virtual ~Function()
{
for (int i = 0; i < (int)parameterInstructions.size(); ++i)
@ -402,6 +402,9 @@ public:
end.dump(out);
}
LinkageType getLinkType() const { return linkType; }
const char* getExportName() const { return exportName.c_str(); }
protected:
Function(const Function&);
Function& operator=(Function&);
@ -414,6 +417,8 @@ protected:
bool implicitThis; // true if this is a member function expecting to be passed a 'this' as the first argument
bool reducedPrecisionReturn;
std::set<int> reducedPrecisionParams; // list of parameter indexes that need a relaxed precision arg
LinkageType linkType;
std::string exportName;
};
//
@ -473,10 +478,11 @@ protected:
// Add both
// - the OpFunction instruction
// - all the OpFunctionParameter instructions
__inline Function::Function(Id id, Id resultType, Id functionType, Id firstParamId, Module& parent)
__inline Function::Function(Id id, Id resultType, Id functionType, Id firstParamId, LinkageType linkage, const std::string& name, Module& parent)
: parent(parent), lineInstruction(nullptr),
functionInstruction(id, resultType, OpFunction), implicitThis(false),
reducedPrecisionReturn(false)
reducedPrecisionReturn(false),
linkType(linkage)
{
// OpFunction
functionInstruction.addImmediateOperand(FunctionControlMaskNone);
@ -492,6 +498,11 @@ __inline Function::Function(Id id, Id resultType, Id functionType, Id firstParam
parent.mapInstruction(param);
parameterInstructions.push_back(param);
}
// If importing/exporting, save the function name (without the mangled parameters) for the linkage decoration
if (linkType != LinkageTypeMax) {
exportName = name.substr(0, name.find_first_of('('));
}
}
__inline void Function::addLocalVariable(std::unique_ptr<Instruction> inst)

116
StandAlone/StandAlone.cpp
View File

@ -73,40 +73,41 @@ extern "C" {
}
// Command-line options
enum TOptions {
enum TOptions : uint64_t {
EOptionNone = 0,
EOptionIntermediate = (1 << 0),
EOptionSuppressInfolog = (1 << 1),
EOptionMemoryLeakMode = (1 << 2),
EOptionRelaxedErrors = (1 << 3),
EOptionGiveWarnings = (1 << 4),
EOptionLinkProgram = (1 << 5),
EOptionMultiThreaded = (1 << 6),
EOptionDumpConfig = (1 << 7),
EOptionDumpReflection = (1 << 8),
EOptionSuppressWarnings = (1 << 9),
EOptionDumpVersions = (1 << 10),
EOptionSpv = (1 << 11),
EOptionHumanReadableSpv = (1 << 12),
EOptionVulkanRules = (1 << 13),
EOptionDefaultDesktop = (1 << 14),
EOptionOutputPreprocessed = (1 << 15),
EOptionOutputHexadecimal = (1 << 16),
EOptionReadHlsl = (1 << 17),
EOptionCascadingErrors = (1 << 18),
EOptionAutoMapBindings = (1 << 19),
EOptionFlattenUniformArrays = (1 << 20),
EOptionNoStorageFormat = (1 << 21),
EOptionKeepUncalled = (1 << 22),
EOptionHlslOffsets = (1 << 23),
EOptionHlslIoMapping = (1 << 24),
EOptionAutoMapLocations = (1 << 25),
EOptionDebug = (1 << 26),
EOptionStdin = (1 << 27),
EOptionOptimizeDisable = (1 << 28),
EOptionOptimizeSize = (1 << 29),
EOptionInvertY = (1 << 30),
EOptionDumpBareVersion = (1 << 31),
EOptionIntermediate = (1ull << 0),
EOptionSuppressInfolog = (1ull << 1),
EOptionMemoryLeakMode = (1ull << 2),
EOptionRelaxedErrors = (1ull << 3),
EOptionGiveWarnings = (1ull << 4),
EOptionLinkProgram = (1ull << 5),
EOptionMultiThreaded = (1ull << 6),
EOptionDumpConfig = (1ull << 7),
EOptionDumpReflection = (1ull << 8),
EOptionSuppressWarnings = (1ull << 9),
EOptionDumpVersions = (1ull << 10),
EOptionSpv = (1ull << 11),
EOptionHumanReadableSpv = (1ull << 12),
EOptionVulkanRules = (1ull << 13),
EOptionDefaultDesktop = (1ull << 14),
EOptionOutputPreprocessed = (1ull << 15),
EOptionOutputHexadecimal = (1ull << 16),
EOptionReadHlsl = (1ull << 17),
EOptionCascadingErrors = (1ull << 18),
EOptionAutoMapBindings = (1ull << 19),
EOptionFlattenUniformArrays = (1ull << 20),
EOptionNoStorageFormat = (1ull << 21),
EOptionKeepUncalled = (1ull << 22),
EOptionHlslOffsets = (1ull << 23),
EOptionHlslIoMapping = (1ull << 24),
EOptionAutoMapLocations = (1ull << 25),
EOptionDebug = (1ull << 26),
EOptionStdin = (1ull << 27),
EOptionOptimizeDisable = (1ull << 28),
EOptionOptimizeSize = (1ull << 29),
EOptionInvertY = (1ull << 30),
EOptionDumpBareVersion = (1ull << 31),
EOptionCompileOnly = (1ull << 32),
};
bool targetHlslFunctionality1 = false;
bool SpvToolsDisassembler = false;
@ -166,7 +167,7 @@ void ProcessConfigFile()
}
int ReflectOptions = EShReflectionDefault;
int Options = 0;
std::underlying_type_t<TOptions> Options = EOptionNone;
const char* ExecutableName = nullptr;
const char* binaryFileName = nullptr;
const char* depencyFileName = nullptr;
@ -889,6 +890,8 @@ void ProcessArguments(std::vector<std::unique_ptr<glslang::TWorkItem>>& workItem
bumpArg();
} else if (lowerword == "version") {
Options |= EOptionDumpVersions;
} else if (lowerword == "no-link") {
Options |= EOptionCompileOnly;
} else if (lowerword == "help") {
usage();
break;
@ -1310,6 +1313,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
//
glslang::TProgram& program = *new glslang::TProgram;
const bool compileOnly = (Options & EOptionCompileOnly) != 0;
for (auto it = compUnits.cbegin(); it != compUnits.cend(); ++it) {
const auto &compUnit = *it;
for (int i = 0; i < compUnit.count; i++) {
@ -1326,6 +1330,9 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
shader->setSourceEntryPoint(sourceEntryPointName);
}
if (compileOnly)
shader->setCompileOnly();
shader->setOverrideVersion(GlslVersion);
std::string intrinsicString = getIntrinsic(compUnit.text, compUnit.count);
@ -1445,6 +1452,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
if (! shader->parse(GetResources(), defaultVersion, false, messages, includer))
CompileFailed = true;
if (!compileOnly)
program.addShader(shader);
if (! (Options & EOptionSuppressInfolog) &&
@ -1460,8 +1468,9 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
// Program-level processing...
//
if (!compileOnly) {
// Link
if (! (Options & EOptionOutputPreprocessed) && ! program.link(messages))
if (!(Options & EOptionOutputPreprocessed) && !program.link(messages))
LinkFailed = true;
// Map IO
@ -1471,8 +1480,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
}
// Report
if (! (Options & EOptionSuppressInfolog) &&
! (Options & EOptionMemoryLeakMode)) {
if (!(Options & EOptionSuppressInfolog) && !(Options & EOptionMemoryLeakMode)) {
PutsIfNonEmpty(program.getInfoLog());
PutsIfNonEmpty(program.getInfoDebugLog());
}
@ -1482,6 +1490,7 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
program.buildReflection(ReflectOptions);
program.dumpReflection();
}
}
std::vector<std::string> outputFiles;
@ -1490,8 +1499,21 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
if (CompileFailed || LinkFailed)
printf("SPIR-V is not generated for failed compile or link\n");
else {
std::vector<glslang::TIntermediate*> intermediates;
if (!compileOnly) {
for (int stage = 0; stage < EShLangCount; ++stage) {
if (program.getIntermediate((EShLanguage)stage)) {
if (auto* i = program.getIntermediate((EShLanguage)stage)) {
intermediates.emplace_back(i);
}
}
} else {
for (const auto* shader : shaders) {
if (auto* i = shader->getIntermediate()) {
intermediates.emplace_back(i);
}
}
}
for (auto* intermediate : intermediates) {
std::vector<unsigned int> spirv;
spv::SpvBuildLogger logger;
glslang::SpvOptions spvOptions;
@ -1509,28 +1531,29 @@ void CompileAndLinkShaderUnits(std::vector<ShaderCompUnit> compUnits)
spvOptions.optimizeSize = (Options & EOptionOptimizeSize) != 0;
spvOptions.disassemble = SpvToolsDisassembler;
spvOptions.validate = SpvToolsValidate;
glslang::GlslangToSpv(*program.getIntermediate((EShLanguage)stage), spirv, &logger, &spvOptions);
spvOptions.compileOnly = compileOnly;
glslang::GlslangToSpv(*intermediate, spirv, &logger, &spvOptions);
// Dump the spv to a file or stdout, etc., but only if not doing
// memory/perf testing, as it's not internal to programmatic use.
if (! (Options & EOptionMemoryLeakMode)) {
if (!(Options & EOptionMemoryLeakMode)) {
printf("%s", logger.getAllMessages().c_str());
const auto filename = GetBinaryName(intermediate->getStage());
if (Options & EOptionOutputHexadecimal) {
if (!glslang::OutputSpvHex(spirv, GetBinaryName((EShLanguage)stage), variableName))
if (!glslang::OutputSpvHex(spirv, filename, variableName))
exit(EFailUsage);
} else {
if (!glslang::OutputSpvBin(spirv, GetBinaryName((EShLanguage)stage)))
if (!glslang::OutputSpvBin(spirv, filename))
exit(EFailUsage);
}
outputFiles.push_back(GetBinaryName((EShLanguage)stage));
outputFiles.push_back(filename);
if (!SpvToolsDisassembler && (Options & EOptionHumanReadableSpv))
spv::Disassemble(std::cout, spirv);
}
}
}
}
}
if (depencyFileName && !(CompileFailed || LinkFailed)) {
std::set<std::string> includedFiles = includer.getIncludedFiles();
@ -2075,7 +2098,10 @@ void usage()
" --variable-name <name>\n"
" --vn <name> creates a C header file that contains a\n"
" uint32_t array named <name>\n"
" initialized with the shader binary code\n");
" initialized with the shader binary code\n"
" --no-link Only compile shader; do not link (GLSL-only)\n"
" NOTE: this option will set the export linkage\n"
" attribute on all functions\n");
exit(EFailUsage);
}

36
Test/baseResults/spv.exportFunctions.comp.out Normal file
View File

@ -0,0 +1,36 @@
spv.exportFunctions.comp
// Module Version 10000
// Generated by (magic number): 8000b
// Id's are bound by 22
Capability Shader
Capability Linkage
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
Source GLSL 450
Name 7 "add(f1;f1;"
Name 5 "a"
Name 6 "b"
Name 11 "foo("
Decorate 7(add(f1;f1;) Linkage Attributes 6579297 0
Decorate 11(foo() Linkage Attributes 7303014 0
2: TypeFloat 32
3: TypePointer Function 2(float)
4: TypeFunction 2(float) 3(ptr) 3(ptr)
9: TypeInt 32 1
10: TypeFunction 9(int)
17: TypeVoid
19: 9(int) Constant 0
7(add(f1;f1;): 2(float) Function None 4
5(a): 3(ptr) FunctionParameter
6(b): 3(ptr) FunctionParameter
8: Label
13: 2(float) Load 5(a)
14: 2(float) Load 6(b)
15: 2(float) FAdd 13 14
ReturnValue 15
FunctionEnd
11(foo(): 9(int) Function None 10
12: Label
ReturnValue 19
FunctionEnd

9
Test/spv.exportFunctions.comp Normal file
View File

@ -0,0 +1,9 @@
#version 450
float add(float a, float b) {
return a + b;
}
int foo() {
return 0;
}

2
glslang/HLSL/hlslAttributes.cpp
View File

@ -101,6 +101,8 @@ namespace glslang {
if (name == "nonwritable") return EatNonWritable;
if (name == "nonreadable") return EatNonReadable;
if (name == "export") return EatExport;
} else if (nameSpace.size() > 0)
return EatNone;

1
glslang/Include/glslang_c_interface.h
View File

@ -226,6 +226,7 @@ typedef struct glslang_spv_options_s {
bool validate;
bool emit_nonsemantic_shader_debug_info;
bool emit_nonsemantic_shader_debug_source;
bool compile_only;
} glslang_spv_options_t;
#ifdef __cplusplus

11
glslang/Include/intermediate.h
View File

@ -1108,6 +1108,11 @@ enum TOperator {
EOpImageBlockMatchSSDQCOM,
};
enum TLinkType {
ELinkNone,
ELinkExport,
};
class TIntermTraverser;
class TIntermOperator;
class TIntermAggregate;
@ -1325,9 +1330,11 @@ public:
virtual const TString& getMethodName() const { return method; }
virtual TIntermTyped* getObject() const { return object; }
virtual void traverse(TIntermTraverser*);
void setExport() { linkType = ELinkExport; }
protected:
TIntermTyped* object;
TString method;
TLinkType linkType;
};
//
@ -1700,6 +1707,9 @@ public:
const TPragmaTable& getPragmaTable() const { return *pragmaTable; }
void setSpirvInstruction(const TSpirvInstruction& inst) { spirvInst = inst; }
const TSpirvInstruction& getSpirvInstruction() const { return spirvInst; }
void setLinkType(TLinkType l) { linkType = l; }
TLinkType getLinkType() const { return linkType; }
protected:
TIntermAggregate(const TIntermAggregate&); // disallow copy constructor
TIntermAggregate& operator=(const TIntermAggregate&); // disallow assignment operator
@ -1711,6 +1721,7 @@ protected:
bool debug;
TPragmaTable* pragmaTable;
TSpirvInstruction spirvInst;
TLinkType linkType = ELinkNone;
};
//

3
glslang/MachineIndependent/ParseHelper.cpp
View File

@ -1243,6 +1243,8 @@ TIntermAggregate* TParseContext::handleFunctionDefinition(const TSourceLoc& loc,
error(loc, "function cannot take any parameter(s)", function.getName().c_str(), "");
if (function.getType().getBasicType() != EbtVoid)
error(loc, "", function.getType().getBasicTypeString().c_str(), "entry point cannot return a value");
if (function.getLinkType() != ELinkNone)
error(loc, "main function cannot be exported", "", "");
}
//
@ -1279,6 +1281,7 @@ TIntermAggregate* TParseContext::handleFunctionDefinition(const TSourceLoc& loc,
} else
paramNodes = intermediate.growAggregate(paramNodes, intermediate.addSymbol(*param.type, loc), loc);
}
paramNodes->setLinkType(function.getLinkType());
intermediate.setAggregateOperator(paramNodes, EOpParameters, TType(EbtVoid), loc);
loopNestingLevel = 0;
statementNestingLevel = 0;

1
glslang/MachineIndependent/ParseHelper.h
View File

@ -196,6 +196,7 @@ public:
struct TPragma contextPragma;
int beginInvocationInterlockCount;
int endInvocationInterlockCount;
bool compileOnly = false;
protected:
TParseContextBase(TParseContextBase&);

11
glslang/MachineIndependent/ShaderLang.cpp
View File

@ -796,7 +796,8 @@ bool ProcessDeferred(
bool requireNonempty,
TShader::Includer& includer,
const std::string sourceEntryPointName = "",
const TEnvironment* environment = nullptr) // optional way of fully setting all versions, overriding the above
const TEnvironment* environment = nullptr, // optional way of fully setting all versions, overriding the above
bool compileOnly = false)
{
// This must be undone (.pop()) by the caller, after it finishes consuming the created tree.
GetThreadPoolAllocator().push();
@ -942,6 +943,7 @@ bool ProcessDeferred(
std::unique_ptr<TParseContextBase> parseContext(CreateParseContext(*symbolTable, intermediate, version, profile, source,
stage, compiler->infoSink,
spvVersion, forwardCompatible, messages, false, sourceEntryPointName));
parseContext->compileOnly = compileOnly;
TPpContext ppContext(*parseContext, names[numPre] ? names[numPre] : "", includer);
// only GLSL (bison triggered, really) needs an externally set scan context
@ -1279,14 +1281,15 @@ bool CompileDeferred(
TIntermediate& intermediate,// returned tree, etc.
TShader::Includer& includer,
const std::string sourceEntryPointName = "",
TEnvironment* environment = nullptr)
TEnvironment* environment = nullptr,
bool compileOnly = false)
{
DoFullParse parser;
return ProcessDeferred(compiler, shaderStrings, numStrings, inputLengths, stringNames,
preamble, optLevel, resources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, intermediate, parser,
true, includer, sourceEntryPointName, environment);
true, includer, sourceEntryPointName, environment, compileOnly);
}
} // end anonymous namespace for local functions
@ -1867,7 +1870,7 @@ bool TShader::parse(const TBuiltInResource* builtInResources, int defaultVersion
preamble, EShOptNone, builtInResources, defaultVersion,
defaultProfile, forceDefaultVersionAndProfile, overrideVersion,
forwardCompatible, messages, *intermediate, includer, sourceEntryPointName,
&environment);
&environment, compileOnly);
}
// Fill in a string with the result of preprocessing ShaderStrings

7
glslang/MachineIndependent/SymbolTable.h
View File

@ -246,7 +246,8 @@ public:
TSymbol(name),
mangledName(*name + '('),
op(tOp),
defined(false), prototyped(false), implicitThis(false), illegalImplicitThis(false), defaultParamCount(0)
defined(false), prototyped(false), implicitThis(false), illegalImplicitThis(false), defaultParamCount(0),
linkType(ELinkNone)
{
returnType.shallowCopy(retType);
declaredBuiltIn = retType.getQualifier().builtIn;
@ -326,6 +327,9 @@ public:
virtual void dump(TInfoSink& infoSink, bool complete = false) const override;
void setExport() { linkType = ELinkExport; }
TLinkType getLinkType() const { return linkType; }
protected:
explicit TFunction(const TFunction&);
TFunction& operator=(const TFunction&);
@ -347,6 +351,7 @@ protected:
int defaultParamCount;
TSpirvInstruction spirvInst; // SPIR-V instruction qualifiers
TLinkType linkType;
};
//

3
glslang/MachineIndependent/attribute.cpp
View File

@ -123,6 +123,8 @@ TAttributeType TParseContext::attributeFromName(const TString& name) const
return EatPartialCount;
else if (name == "subgroup_uniform_control_flow")
return EatSubgroupUniformControlFlow;
else if (name == "export")
return EatExport;
else
return EatNone;
}
@ -355,6 +357,7 @@ void TParseContext::handleFunctionAttributes(const TSourceLoc& loc, const TAttri
switch (it->name) {
case EatSubgroupUniformControlFlow:
requireExtensions(loc, 1, &E_GL_EXT_subgroup_uniform_control_flow, "attribute");
intermediate.setSubgroupUniformControlFlow();
break;
default:

1
glslang/MachineIndependent/attribute.h
View File

@ -120,6 +120,7 @@ namespace glslang {
EatNonWritable,
EatNonReadable,
EatSubgroupUniformControlFlow,
EatExport,
};
class TIntermAggregate;

8
glslang/MachineIndependent/glslang.y
View File

@ -941,24 +941,25 @@ identifier_list
function_prototype
: function_declarator RIGHT_PAREN {
$$.function = $1;
if (parseContext.compileOnly) $$.function->setExport();
$$.loc = $2.loc;
}
| function_declarator RIGHT_PAREN attribute {
$$.function = $1;
if (parseContext.compileOnly) $$.function->setExport();
$$.loc = $2.loc;
parseContext.requireExtensions($2.loc, 1, &E_GL_EXT_subgroup_uniform_control_flow, "attribute");
parseContext.handleFunctionAttributes($2.loc, *$3);
}
| attribute function_declarator RIGHT_PAREN {
$$.function = $2;
if (parseContext.compileOnly) $$.function->setExport();
$$.loc = $3.loc;
parseContext.requireExtensions($3.loc, 1, &E_GL_EXT_subgroup_uniform_control_flow, "attribute");
parseContext.handleFunctionAttributes($3.loc, *$1);
}
| attribute function_declarator RIGHT_PAREN attribute {
$$.function = $2;
if (parseContext.compileOnly) $$.function->setExport();
$$.loc = $3.loc;
parseContext.requireExtensions($3.loc, 1, &E_GL_EXT_subgroup_uniform_control_flow, "attribute");
parseContext.handleFunctionAttributes($3.loc, *$1);
parseContext.handleFunctionAttributes($3.loc, *$4);
}
@ -4088,6 +4089,7 @@ function_definition
parseContext.error($1.loc, "function does not return a value:", "", $1.function->getName().c_str());
parseContext.symbolTable.pop(&parseContext.defaultPrecision[0]);
$$ = parseContext.intermediate.growAggregate($1.intermNode, $3);
$$->getAsAggregate()->setLinkType($1.function->getLinkType());
parseContext.intermediate.setAggregateOperator($$, EOpFunction, $1.function->getType(), $1.loc);
$$->getAsAggregate()->setName($1.function->getMangledName().c_str());

2604
glslang/MachineIndependent/glslang_tab.cpp
View File

File diff suppressed because it is too large Load Diff

2
glslang/MachineIndependent/glslang_tab.cpp.h
View File

@ -524,7 +524,7 @@ extern int yydebug;
#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED
union YYSTYPE
{
#line 97 "MachineIndependent/glslang.y"
#line 72 "MachineIndependent/glslang.y"
struct {
glslang::TSourceLoc loc;

6
glslang/Public/ShaderLang.h
View File

@ -573,6 +573,9 @@ public:
void setEnvInputVulkanRulesRelaxed() { environment.input.vulkanRulesRelaxed = true; }
bool getEnvInputVulkanRulesRelaxed() const { return environment.input.vulkanRulesRelaxed; }
void setCompileOnly() { compileOnly = true; }
bool getCompileOnly() const { return compileOnly; }
// Interface to #include handlers.
//
// To support #include, a client of Glslang does the following:
@ -722,6 +725,9 @@ protected:
TEnvironment environment;
// Indicates this shader is meant to be used without linking
bool compileOnly = false;
friend class TProgram;
private:

19
gtests/Spv.FromFile.cpp
View File

@ -65,6 +65,7 @@ std::string FileNameAsCustomTestSuffixIoMap(
}
using CompileVulkanToSpirvTest = GlslangTest<::testing::TestWithParam<std::string>>;
using CompileVulkanToSpirvTestNoLink = GlslangTest<::testing::TestWithParam<std::string>>;
using CompileVulkanToSpirvDeadCodeElimTest = GlslangTest<::testing::TestWithParam<std::string>>;
using CompileVulkanToDebugSpirvTest = GlslangTest<::testing::TestWithParam<std::string>>;
using CompileVulkan1_1ToSpirvTest = GlslangTest<::testing::TestWithParam<std::string>>;
@ -92,6 +93,16 @@ TEST_P(CompileVulkanToSpirvTest, FromFile)
Target::Spv);
}
// Compiling GLSL to SPIR-V under Vulkan semantics without linking. Expected to successfully generate SPIR-V.
TEST_P(CompileVulkanToSpirvTestNoLink, FromFile)
{
options().compileOnly = true;
// NOTE: Vulkan 1.3 is currently required to use the linkage capability
// TODO(ncesario) make sure this is actually necessary
loadFileCompileAndCheck(GlobalTestSettings.testRoot, GetParam(), Source::GLSL, Semantics::Vulkan,
glslang::EShTargetVulkan_1_3, glslang::EShTargetSpv_1_0, Target::Spv);
}
TEST_P(CompileVulkanToSpirvDeadCodeElimTest, FromFile)
{
loadFileCompileAndCheck(GlobalTestSettings.testRoot, GetParam(),
@ -534,6 +545,14 @@ INSTANTIATE_TEST_SUITE_P(
FileNameAsCustomTestSuffix
);
INSTANTIATE_TEST_SUITE_P(
Glsl, CompileVulkanToSpirvTestNoLink,
::testing::ValuesIn(std::vector<std::string>({
"spv.exportFunctions.comp",
})),
FileNameAsCustomTestSuffix
);
// Cases with deliberately unreachable code.
// By default the compiler will aggressively eliminate
// unreachable merges and continues.

44
gtests/TestFixture.h
View File

@ -248,36 +248,58 @@ public:
}
}
if (options().compileOnly)
shader.setCompileOnly();
bool success = compile(
&shader, code, entryPointName, controls, nullptr, &shaderName);
glslang::TProgram program;
spv::SpvBuildLogger logger;
std::vector<uint32_t> spirv_binary;
if (!options().compileOnly) {
program.addShader(&shader);
success &= program.link(controls);
if (success)
program.mapIO();
if (success && (controls & EShMsgSpvRules)) {
spv::SpvBuildLogger logger;
std::vector<uint32_t> spirv_binary;
options().disableOptimizer = !enableOptimizer;
options().generateDebugInfo = enableDebug;
options().emitNonSemanticShaderDebugInfo = enableNonSemanticShaderDebugInfo;
options().emitNonSemanticShaderDebugSource = enableNonSemanticShaderDebugInfo;
glslang::GlslangToSpv(*program.getIntermediate(stage),
spirv_binary, &logger, &options());
glslang::GlslangToSpv(*program.getIntermediate(stage), spirv_binary, &logger, &options());
} else {
return {{
{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},
},
program.getInfoLog(),
program.getInfoDebugLog(),
true,
"",
""};
}
} else {
options().disableOptimizer = !enableOptimizer;
options().generateDebugInfo = enableDebug;
options().emitNonSemanticShaderDebugInfo = enableNonSemanticShaderDebugInfo;
options().emitNonSemanticShaderDebugSource = enableNonSemanticShaderDebugInfo;
glslang::GlslangToSpv(*shader.getIntermediate(), spirv_binary, &logger, &options());
}
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
bool validation_result = !options().validate || logger.getAllMessages().empty();
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(),
validation_result, logger.getAllMessages(), disassembly_stream.str()};
} else {
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(), true, "", ""};
}
return {{
{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},
},
program.getInfoLog(),
program.getInfoDebugLog(),
validation_result,
logger.getAllMessages(),
disassembly_stream.str()};
}
// Compiles and links the given source |code| of the given shader