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| author | Kostya Serebryany <kcc@google.com> | 2016-02-17 21:34:43 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2016-02-17 21:34:43 +0000 |
| commit | d4590c7304575702731b00749ae22e1298a98eba (patch) | |
| tree | 7bf5023a60a9e44773fef4c7c704b3c89250b328 /clang/lib/Driver/SanitizerArgs.cpp | |
| parent | 2af1e3e963d5af7a674f101cfebbddd7e74460ae (diff) | |
| download | bcm5719-llvm-d4590c7304575702731b00749ae22e1298a98eba.tar.gz bcm5719-llvm-d4590c7304575702731b00749ae22e1298a98eba.zip | |
[sanitizer-coverage] implement -fsanitize-coverage=trace-pc. This is similar to trace-bb, but has a different API. We already use the equivalent flag in GCC for Linux kernel fuzzing. We may be able to use this flag with AFL too
llvm-svn: 261159
Diffstat (limited to 'clang/lib/Driver/SanitizerArgs.cpp')
| -rw-r--r-- | clang/lib/Driver/SanitizerArgs.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp index cf8d39d6efe..1614ee439c2 100644 --- a/clang/lib/Driver/SanitizerArgs.cpp +++ b/clang/lib/Driver/SanitizerArgs.cpp @@ -49,6 +49,7 @@ enum CoverageFeature { CoverageTraceBB = 1 << 4, CoverageTraceCmp = 1 << 5, Coverage8bitCounters = 1 << 6, + CoverageTracePC = 1 << 7, }; /// Parse a -fsanitize= or -fno-sanitize= argument's values, diagnosing any @@ -498,6 +499,11 @@ SanitizerArgs::SanitizerArgs(const ToolChain &TC, D.Diag(clang::diag::err_drv_argument_only_allowed_with) << "-fsanitize-coverage=8bit-counters" << "-fsanitize-coverage=(func|bb|edge)"; + if ((CoverageFeatures & CoverageTracePC) && + !(CoverageFeatures & CoverageTypes)) + D.Diag(clang::diag::err_drv_argument_only_allowed_with) + << "-fsanitize-coverage=trace-pc" + << "-fsanitize-coverage=(func|bb|edge)"; if (AllAddedKinds & Address) { AsanSharedRuntime = @@ -615,7 +621,8 @@ void SanitizerArgs::addArgs(const ToolChain &TC, const llvm::opt::ArgList &Args, std::make_pair(CoverageIndirCall, "-fsanitize-coverage-indirect-calls"), std::make_pair(CoverageTraceBB, "-fsanitize-coverage-trace-bb"), std::make_pair(CoverageTraceCmp, "-fsanitize-coverage-trace-cmp"), - std::make_pair(Coverage8bitCounters, "-fsanitize-coverage-8bit-counters")}; + std::make_pair(Coverage8bitCounters, "-fsanitize-coverage-8bit-counters"), + std::make_pair(CoverageTracePC, "-fsanitize-coverage-trace-pc")}; for (auto F : CoverageFlags) { if (CoverageFeatures & F.first) CmdArgs.push_back(Args.MakeArgString(F.second)); @@ -696,6 +703,7 @@ int parseCoverageFeatures(const Driver &D, const llvm::opt::Arg *A) { .Case("trace-bb", CoverageTraceBB) .Case("trace-cmp", CoverageTraceCmp) .Case("8bit-counters", Coverage8bitCounters) + .Case("trace-pc", CoverageTracePC) .Default(0); if (F == 0) D.Diag(clang::diag::err_drv_unsupported_option_argument) |
