Author: morehouse Date: Fri Mar 23 16:35:28 2018 New Revision: 328384 URL: http://llvm.org/viewvc/llvm-project?rev=328384&view=rev Log: [libFuzzer] Use OptForFuzzing attribute with -fsanitize=fuzzer.
Summary: Disables certain CMP optimizations to improve fuzzing signal under -O1 and -O2. Switches all fuzzer tests to -O2 except for a few leak tests where the leak is optimized out under -O2. Reviewers: kcc, vitalybuka Reviewed By: vitalybuka Subscribers: cfe-commits, llvm-commits Differential Revision: https://reviews.llvm.org/D44798 Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.cpp Modified: cfe/trunk/lib/CodeGen/CodeGenFunction.cpp URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CodeGenFunction.cpp?rev=328384&r1=328383&r2=328384&view=diff ============================================================================== --- cfe/trunk/lib/CodeGen/CodeGenFunction.cpp (original) +++ cfe/trunk/lib/CodeGen/CodeGenFunction.cpp Fri Mar 23 16:35:28 2018 @@ -862,6 +862,10 @@ void CodeGenFunction::StartFunction(Glob if (SanOpts.has(SanitizerKind::SafeStack)) Fn->addFnAttr(llvm::Attribute::SafeStack); + // Apply fuzzing attribute to the function. + if (SanOpts.hasOneOf(SanitizerKind::Fuzzer | SanitizerKind::FuzzerNoLink)) + Fn->addFnAttr(llvm::Attribute::OptForFuzzing); + // Ignore TSan memory acesses from within ObjC/ObjC++ dealloc, initialize, // .cxx_destruct, __destroy_helper_block_ and all of their calees at run time. if (SanOpts.has(SanitizerKind::Thread)) { _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
