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//
// Copyright (C) 2014-2016 LunarG, Inc.
// Copyright (C) 2018 Google, Inc.
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Call into SPIRV-Tools to disassemble, validate, and optimize.
//
#if ENABLE_OPT
#include <cstdio>
#include <iostream>
#include "SpvTools.h"
#include "spirv-tools/optimizer.hpp"
#include "spirv-tools/libspirv.h"
namespace glslang {
// Translate glslang's view of target versioning to what SPIRV-Tools uses.
spv_target_env MapToSpirvToolsEnv(const SpvVersion& spvVersion, spv::SpvBuildLogger* logger)
{
switch (spvVersion.vulkan) {
case glslang::EShTargetVulkan_1_0: return spv_target_env::SPV_ENV_VULKAN_1_0;
case glslang::EShTargetVulkan_1_1: return spv_target_env::SPV_ENV_VULKAN_1_1;
default:
break;
}
if (spvVersion.openGl > 0)
return spv_target_env::SPV_ENV_OPENGL_4_5;
logger->missingFunctionality("Target version for SPIRV-Tools validator");
return spv_target_env::SPV_ENV_UNIVERSAL_1_0;
}
// Use the SPIRV-Tools disassembler to print SPIR-V.
void SpirvToolsDisassemble(std::ostream& out, const std::vector<unsigned int>& spirv)
{
// disassemble
spv_context context = spvContextCreate(SPV_ENV_UNIVERSAL_1_3);
spv_text text;
spv_diagnostic diagnostic = nullptr;
spvBinaryToText(context, spirv.data(), spirv.size(),
SPV_BINARY_TO_TEXT_OPTION_FRIENDLY_NAMES | SPV_BINARY_TO_TEXT_OPTION_INDENT,
&text, &diagnostic);
// dump
if (diagnostic == nullptr)
out << text->str;
else
spvDiagnosticPrint(diagnostic);
// teardown
spvDiagnosticDestroy(diagnostic);
spvContextDestroy(context);
}
// Apply the SPIRV-Tools validator to generated SPIR-V.
void SpirvToolsValidate(const glslang::TIntermediate& intermediate, std::vector<unsigned int>& spirv,
spv::SpvBuildLogger* logger)
{
// validate
spv_context context = spvContextCreate(MapToSpirvToolsEnv(intermediate.getSpv(), logger));
spv_const_binary_t binary = { spirv.data(), spirv.size() };
spv_diagnostic diagnostic = nullptr;
spv_validator_options options = spvValidatorOptionsCreate();
spvValidatorOptionsSetRelaxBlockLayout(options, intermediate.usingHlslOffsets());
spvValidateWithOptions(context, options, &binary, &diagnostic);
// report
if (diagnostic != nullptr) {
logger->error("SPIRV-Tools Validation Errors");
logger->error(diagnostic->error);
}
// tear down
spvValidatorOptionsDestroy(options);
spvDiagnosticDestroy(diagnostic);
spvContextDestroy(context);
}
// Apply the SPIRV-Tools optimizer to generated SPIR-V, for the purpose of
// legalizing HLSL SPIR-V.
void SpirvToolsLegalize(const glslang::TIntermediate&, std::vector<unsigned int>& spirv,
spv::SpvBuildLogger*, const SpvOptions* options)
{
spv_target_env target_env = SPV_ENV_UNIVERSAL_1_2;
spvtools::Optimizer optimizer(target_env);
optimizer.SetMessageConsumer(
[](spv_message_level_t level, const char *source, const spv_position_t &position, const char *message) {
auto &out = std::cerr;
switch (level)
{
case SPV_MSG_FATAL:
case SPV_MSG_INTERNAL_ERROR:
case SPV_MSG_ERROR:
out << "error: ";
break;
case SPV_MSG_WARNING:
out << "warning: ";
break;
case SPV_MSG_INFO:
case SPV_MSG_DEBUG:
out << "info: ";
break;
default:
break;
}
if (source)
{
out << source << ":";
}
out << position.line << ":" << position.column << ":" << position.index << ":";
if (message)
{
out << " " << message;
}
out << std::endl;
});
// If debug (specifically source line info) is being generated, propagate
// line information into all SPIR-V instructions. This avoids loss of
// information when instructions are deleted or moved. Later, remove
// redundant information to minimize final SPRIR-V size.
if (options->generateDebugInfo) {
optimizer.RegisterPass(spvtools::CreatePropagateLineInfoPass());
}
optimizer.RegisterPass(spvtools::CreateDeadBranchElimPass());
optimizer.RegisterPass(spvtools::CreateMergeReturnPass());
optimizer.RegisterPass(spvtools::CreateInlineExhaustivePass());
optimizer.RegisterPass(spvtools::CreateEliminateDeadFunctionsPass());
optimizer.RegisterPass(spvtools::CreateScalarReplacementPass());
optimizer.RegisterPass(spvtools::CreateLocalAccessChainConvertPass());
optimizer.RegisterPass(spvtools::CreateLocalSingleBlockLoadStoreElimPass());
optimizer.RegisterPass(spvtools::CreateLocalSingleStoreElimPass());
optimizer.RegisterPass(spvtools::CreateSimplificationPass());
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateVectorDCEPass());
optimizer.RegisterPass(spvtools::CreateDeadInsertElimPass());
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateDeadBranchElimPass());
optimizer.RegisterPass(spvtools::CreateBlockMergePass());
optimizer.RegisterPass(spvtools::CreateLocalMultiStoreElimPass());
optimizer.RegisterPass(spvtools::CreateIfConversionPass());
optimizer.RegisterPass(spvtools::CreateSimplificationPass());
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateVectorDCEPass());
optimizer.RegisterPass(spvtools::CreateDeadInsertElimPass());
if (options->optimizeSize) {
optimizer.RegisterPass(spvtools::CreateRedundancyEliminationPass());
// TODO(greg-lunarg): Add this when AMD driver issues are resolved
// optimizer.RegisterPass(CreateCommonUniformElimPass());
}
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateCFGCleanupPass());
if (options->generateDebugInfo) {
optimizer.RegisterPass(spvtools::CreateRedundantLineInfoElimPass());
}
spvtools::OptimizerOptions spvOptOptions;
spvOptOptions.set_run_validator(false); // The validator may run as a seperate step later on
optimizer.Run(spirv.data(), spirv.size(), &spirv, spvOptOptions);
}
}; // end namespace glslang
#endif
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