2 // Copyright (C) 2014-2016 LunarG, Inc.
3 // Copyright (C) 2018-2020 Google, Inc.
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37 // Call into SPIRV-Tools to disassemble, validate, and optimize.
46 #include "spirv-tools/optimizer.hpp"
50 // Translate glslang's view of target versioning to what SPIRV-Tools uses.
51 spv_target_env MapToSpirvToolsEnv(const SpvVersion& spvVersion, spv::SpvBuildLogger* logger)
53 switch (spvVersion.vulkan) {
54 case glslang::EShTargetVulkan_1_0:
55 return spv_target_env::SPV_ENV_VULKAN_1_0;
56 case glslang::EShTargetVulkan_1_1:
57 switch (spvVersion.spv) {
58 case EShTargetSpv_1_0:
59 case EShTargetSpv_1_1:
60 case EShTargetSpv_1_2:
61 case EShTargetSpv_1_3:
62 return spv_target_env::SPV_ENV_VULKAN_1_1;
63 case EShTargetSpv_1_4:
64 return spv_target_env::SPV_ENV_VULKAN_1_1_SPIRV_1_4;
66 logger->missingFunctionality("Target version for SPIRV-Tools validator");
67 return spv_target_env::SPV_ENV_VULKAN_1_1;
69 case glslang::EShTargetVulkan_1_2:
70 return spv_target_env::SPV_ENV_VULKAN_1_2;
75 if (spvVersion.openGl > 0)
76 return spv_target_env::SPV_ENV_OPENGL_4_5;
78 logger->missingFunctionality("Target version for SPIRV-Tools validator");
79 return spv_target_env::SPV_ENV_UNIVERSAL_1_0;
82 // Callback passed to spvtools::Optimizer::SetMessageConsumer
83 void OptimizerMesssageConsumer(spv_message_level_t level, const char *source,
84 const spv_position_t &position, const char *message)
86 auto &out = std::cerr;
90 case SPV_MSG_INTERNAL_ERROR:
106 out << source << ":";
108 out << position.line << ":" << position.column << ":" << position.index << ":";
111 out << " " << message;
116 // Use the SPIRV-Tools disassembler to print SPIR-V using a SPV_ENV_UNIVERSAL_1_3 environment.
117 void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv)
119 SpirvToolsDisassemble(out, spirv, spv_target_env::SPV_ENV_UNIVERSAL_1_3);
122 // Use the SPIRV-Tools disassembler to print SPIR-V with a provided SPIR-V environment.
123 void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv,
124 spv_target_env requested_context)
127 spv_context context = spvContextCreate(requested_context);
129 spv_diagnostic diagnostic = nullptr;
130 spvBinaryToText(context, spirv.data(), spirv.size(),
131 SPV_BINARY_TO_TEXT_OPTION_FRIENDLY_NAMES | SPV_BINARY_TO_TEXT_OPTION_INDENT,
135 if (diagnostic == nullptr)
138 spvDiagnosticPrint(diagnostic);
141 spvDiagnosticDestroy(diagnostic);
142 spvContextDestroy(context);
145 // Apply the SPIRV-Tools validator to generated SPIR-V.
146 void SpirvToolsValidate(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
147 spv::SpvBuildLogger* logger, bool prelegalization)
150 spv_context context = spvContextCreate(MapToSpirvToolsEnv(intermediate.getSpv(), logger));
151 spv_const_binary_t binary = { spirv.data(), spirv.size() };
152 spv_diagnostic diagnostic = nullptr;
153 spv_validator_options options = spvValidatorOptionsCreate();
154 spvValidatorOptionsSetRelaxBlockLayout(options, intermediate.usingHlslOffsets());
155 spvValidatorOptionsSetBeforeHlslLegalization(options, prelegalization);
156 spvValidatorOptionsSetScalarBlockLayout(options, intermediate.usingScalarBlockLayout());
157 spvValidateWithOptions(context, options, &binary, &diagnostic);
160 if (diagnostic != nullptr) {
161 logger->error("SPIRV-Tools Validation Errors");
162 logger->error(diagnostic->error);
166 spvValidatorOptionsDestroy(options);
167 spvDiagnosticDestroy(diagnostic);
168 spvContextDestroy(context);
171 // Apply the SPIRV-Tools optimizer to generated SPIR-V. HLSL SPIR-V is legalized in the process.
172 void SpirvToolsTransform(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
173 spv::SpvBuildLogger* logger, const SpvOptions* options)
175 spv_target_env target_env = MapToSpirvToolsEnv(intermediate.getSpv(), logger);
177 spvtools::Optimizer optimizer(target_env);
178 optimizer.SetMessageConsumer(OptimizerMesssageConsumer);
180 // If debug (specifically source line info) is being generated, propagate
181 // line information into all SPIR-V instructions. This avoids loss of
182 // information when instructions are deleted or moved. Later, remove
183 // redundant information to minimize final SPRIR-V size.
184 if (options->stripDebugInfo) {
185 optimizer.RegisterPass(spvtools::CreateStripDebugInfoPass());
187 optimizer.RegisterPass(spvtools::CreateWrapOpKillPass());
188 optimizer.RegisterPass(spvtools::CreateDeadBranchElimPass());
189 optimizer.RegisterPass(spvtools::CreateMergeReturnPass());
190 optimizer.RegisterPass(spvtools::CreateInlineExhaustivePass());
191 optimizer.RegisterPass(spvtools::CreateEliminateDeadFunctionsPass());
192 optimizer.RegisterPass(spvtools::CreateScalarReplacementPass());
193 optimizer.RegisterPass(spvtools::CreateLocalAccessChainConvertPass());
194 optimizer.RegisterPass(spvtools::CreateLocalSingleBlockLoadStoreElimPass());
195 optimizer.RegisterPass(spvtools::CreateLocalSingleStoreElimPass());
196 optimizer.RegisterPass(spvtools::CreateSimplificationPass());
197 optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
198 optimizer.RegisterPass(spvtools::CreateVectorDCEPass());
199 optimizer.RegisterPass(spvtools::CreateDeadInsertElimPass());
200 optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
201 optimizer.RegisterPass(spvtools::CreateDeadBranchElimPass());
202 optimizer.RegisterPass(spvtools::CreateBlockMergePass());
203 optimizer.RegisterPass(spvtools::CreateLocalMultiStoreElimPass());
204 optimizer.RegisterPass(spvtools::CreateIfConversionPass());
205 optimizer.RegisterPass(spvtools::CreateSimplificationPass());
206 optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
207 optimizer.RegisterPass(spvtools::CreateVectorDCEPass());
208 optimizer.RegisterPass(spvtools::CreateDeadInsertElimPass());
209 if (options->optimizeSize) {
210 optimizer.RegisterPass(spvtools::CreateRedundancyEliminationPass());
212 optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
213 optimizer.RegisterPass(spvtools::CreateCFGCleanupPass());
215 spvtools::OptimizerOptions spvOptOptions;
216 optimizer.SetTargetEnv(MapToSpirvToolsEnv(intermediate.getSpv(), logger));
217 spvOptOptions.set_run_validator(false); // The validator may run as a separate step later on
218 optimizer.Run(spirv.data(), spirv.size(), &spirv, spvOptOptions);
221 // Apply the SPIRV-Tools optimizer to strip debug info from SPIR-V. This is implicitly done by
222 // SpirvToolsTransform if spvOptions->stripDebugInfo is set, but can be called separately if
223 // optimization is disabled.
224 void SpirvToolsStripDebugInfo(const glslang::TIntermediate& intermediate,
225 std::vector<unsigned int>& spirv, spv::SpvBuildLogger* logger)
227 spv_target_env target_env = MapToSpirvToolsEnv(intermediate.getSpv(), logger);
229 spvtools::Optimizer optimizer(target_env);
230 optimizer.SetMessageConsumer(OptimizerMesssageConsumer);
232 optimizer.RegisterPass(spvtools::CreateStripDebugInfoPass());
234 spvtools::OptimizerOptions spvOptOptions;
235 optimizer.SetTargetEnv(MapToSpirvToolsEnv(intermediate.getSpv(), logger));
236 spvOptOptions.set_run_validator(false); // The validator may run as a separate step later on
237 optimizer.Run(spirv.data(), spirv.size(), &spirv, spvOptOptions);
240 }; // end namespace glslang