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Differential D121446

Add -no-unused-coverage option
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Authored by Hiralo on Mar 10 2022, 11:39 PM.

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vsk
Summary

commit 87f30be546daca55664ded147acceb9f206399e0
Author: Hiral Oza <hiral.oza@netapp.com>
Date: Fri Mar 11 09:41:38 2022 +0530

Add -no-unused-coverage option

Reduce the size of instrumented objects by eliminating counters for code that will not be emitted.

Author: Thom.Harp@netapp.com

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Hiralo created this revision.Mar 10 2022, 11:39 PM
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Hiralo requested review of this revision.Mar 10 2022, 11:39 PM
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Hiralo edited the summary of this revision. (Show Details)Mar 10 2022, 11:39 PM
Harbormaster completed remote builds in B153727: Diff 414595.Mar 11 2022, 12:44 AM

Revision Contents

PathSize
clang/
include/
clang/
Basic/
2 lines
Driver/
3 lines
lib/
CodeGen/
4 lines

Diff 414595

clang/include/clang/Basic/CodeGenOptions.def

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///< enable code coverage analysis. ///< enable code coverage analysis.
CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping
///< regions. ///< regions.
CODEGENOPT(NoUnusedCoverage , 1, 0) ///< Turn off coverage mapping for code that
///< is not emitted.
/// If -fpcc-struct-return or -freg-struct-return is specified. /// If -fpcc-struct-return or -freg-struct-return is specified.
ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default) ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
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clang/include/clang/Driver/Options.td

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def dump_coverage_mapping : Flag<["-"], "dump-coverage-mapping">, def dump_coverage_mapping : Flag<["-"], "dump-coverage-mapping">,
HelpText<"Dump the coverage mapping records, for testing">, HelpText<"Dump the coverage mapping records, for testing">,
MarshallingInfoFlag<CodeGenOpts<"DumpCoverageMapping">>; MarshallingInfoFlag<CodeGenOpts<"DumpCoverageMapping">>;
def no_unused_coverage : Flag<["-"], "no-unused-coverage">,
HelpText<"Turn off coverage mapping for code that is not emitted">,
MarshallingInfoFlag<CodeGenOpts<"NoUnusedCoverage">>;
def fuse_register_sized_bitfield_access: Flag<["-"], "fuse-register-sized-bitfield-access">, def fuse_register_sized_bitfield_access: Flag<["-"], "fuse-register-sized-bitfield-access">,
HelpText<"Use register sized accesses to bit-fields, when possible.">, HelpText<"Use register sized accesses to bit-fields, when possible.">,
MarshallingInfoFlag<CodeGenOpts<"UseRegisterSizedBitfieldAccess">>; MarshallingInfoFlag<CodeGenOpts<"UseRegisterSizedBitfieldAccess">>;
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clang/lib/CodeGen/CodeGenModule.cpp

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EmitCtorList(GlobalDtors, "llvm.global_dtors"); EmitCtorList(GlobalDtors, "llvm.global_dtors");
EmitGlobalAnnotations(); EmitGlobalAnnotations();
EmitStaticExternCAliases(); EmitStaticExternCAliases();
EmitDeferredUnusedCoverageMappings(); if (!CodeGenOpts.NoUnusedCoverage) {
EmitDeferredUnusedCoverageMappings();
}
CodeGenPGO(*this).setValueProfilingFlag(getModule()); CodeGenPGO(*this).setValueProfilingFlag(getModule());
if (CoverageMapping) if (CoverageMapping)
CoverageMapping->emit(); CoverageMapping->emit();
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