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| author | Matt Morehouse <mascasa@google.com> | 2018-03-23 23:35:28 +0000 |
|---|---|---|
| committer | Matt Morehouse <mascasa@google.com> | 2018-03-23 23:35:28 +0000 |
| commit | 5317f2e4c907fd1eca64772bdd2c23364adfaa77 (patch) | |
| tree | eb4d5ae1ea89856bca2b5eac1b5d3ff928709814 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 953d843dfb7b4924346031b8a3b586ec06a5ebde (diff) | |
| download | bcm5719-llvm-5317f2e4c907fd1eca64772bdd2c23364adfaa77.tar.gz bcm5719-llvm-5317f2e4c907fd1eca64772bdd2c23364adfaa77.zip | |
[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
llvm-svn: 328384
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index c5de16bc6eb..3d7b9065876 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -862,6 +862,10 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, 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)) { |
