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Add passes to legalization to preserve source line info when generated.

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This commit is contained in:
Greg Fischer 2018-11-28 11:10:27 -07:00
parent b23d232ec5
commit 5620a2f95e
4 changed files with 220 additions and 0 deletions
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10
SPIRV/SpvTools.cpp
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@ -152,6 +152,13 @@ void SpirvToolsLegalize(const glslang::TIntermediate&, std::vector<unsigned int>
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());
@ -180,6 +187,9 @@ void SpirvToolsLegalize(const glslang::TIntermediate&, std::vector<unsigned int>
}
optimizer.RegisterPass(spvtools::CreateAggressiveDCEPass());
optimizer.RegisterPass(spvtools::CreateCFGCleanupPass());
if (options->generateDebugInfo) {
optimizer.RegisterPass(spvtools::CreateRedundantLineInfoElimPass());
}
optimizer.Run(spirv.data(), spirv.size(), &spirv);
}