nicolas/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add coverage mapping generation.

Browse Source 
This patch adds the '-fcoverage-mapping' option which
allows clang to generate the coverage mapping information
that can be used to provide code coverage analysis using
the execution counts obtained from the instrumentation 
based profiling (-fprofile-instr-generate).

llvm-svn: 214752
This commit is contained in:
Alex Lorenz
2014-08-04 18:41:51 +00:00
parent 1193b5e272
commit ee02499a8f
16 changed files with 1577 additions and 54 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
clang/lib/CodeGen/ModuleBuilder.cpp
View File

@@ -46,14 +46,18 @@ namespace {
}
};
CoverageSourceInfo *CoverageInfo;
protected:
std::unique_ptr<llvm::Module> M;
std::unique_ptr<CodeGen::CodeGenModule> Builder;
public:
CodeGeneratorImpl(DiagnosticsEngine &diags, const std::string& ModuleName,
const CodeGenOptions &CGO, llvm::LLVMContext& C)
const CodeGenOptions &CGO, llvm::LLVMContext& C,
CoverageSourceInfo *CoverageInfo = nullptr)
: Diags(diags), CodeGenOpts(CGO), HandlingTopLevelDecls(0),
CoverageInfo(CoverageInfo),
M(new llvm::Module(ModuleName, C)) {}
virtual ~CodeGeneratorImpl() {}
@@ -86,7 +90,7 @@ namespace {
M->setDataLayout(Ctx->getTargetInfo().getTargetDescription());
TD.reset(new llvm::DataLayout(Ctx->getTargetInfo().getTargetDescription()));
Builder.reset(new CodeGen::CodeGenModule(Context, CodeGenOpts, *M, *TD,
Diags));
Diags, CoverageInfo));
for (size_t i = 0, e = CodeGenOpts.DependentLibraries.size(); i < e; ++i)
HandleDependentLibrary(CodeGenOpts.DependentLibraries[i]);
@@ -136,6 +140,10 @@ namespace {
// void foo() { bar(); }
// } A;
DeferredInlineMethodDefinitions.push_back(D);
// Always provide some coverage mapping
// even for the methods that aren't emitted.
Builder->AddDeferredUnusedCoverageMapping(D);
}
/// HandleTagDeclDefinition - This callback is invoked each time a TagDecl
@@ -221,6 +229,7 @@ CodeGenerator *clang::CreateLLVMCodeGen(DiagnosticsEngine &Diags,
const std::string& ModuleName,
const CodeGenOptions &CGO,
const TargetOptions &/*TO*/,
llvm::LLVMContext& C) {
return new CodeGeneratorImpl(Diags, ModuleName, CGO, C);
llvm::LLVMContext& C,
CoverageSourceInfo *CoverageInfo) {
return new CodeGeneratorImpl(Diags, ModuleName, CGO, C, CoverageInfo);
}