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| author | Kostya Serebryany <kcc@google.com> | 2015-02-04 01:21:45 +0000 |
|---|---|---|
| committer | Kostya Serebryany <kcc@google.com> | 2015-02-04 01:21:45 +0000 |
| commit | cb756b8718b71745100925085245a6a32e45336a (patch) | |
| tree | 9265b99ba39d6d431167450a66636252ad39a3ce /lib/sanitizer_common/sanitizer_coverage_libcdep.cc | |
| parent | 72f54a5f86969b943a437e7229ee6d3942aab895 (diff) | |
[sanitizer] add another workaround for PR 17409: when over a threshold emit coverage instrumentation as calls.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@228102 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/sanitizer_common/sanitizer_coverage_libcdep.cc')
| -rw-r--r-- | lib/sanitizer_common/sanitizer_coverage_libcdep.cc | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_coverage_libcdep.cc b/lib/sanitizer_common/sanitizer_coverage_libcdep.cc index 9414bcb09..e8f42f68a 100644 --- a/lib/sanitizer_common/sanitizer_coverage_libcdep.cc +++ b/lib/sanitizer_common/sanitizer_coverage_libcdep.cc @@ -659,6 +659,11 @@ SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cov(u32 *guard) { coverage_data.Add(StackTrace::GetPreviousInstructionPc(GET_CALLER_PC()), guard); } +SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cov_with_check(u32 *guard) { + atomic_uint32_t *atomic_guard = reinterpret_cast<atomic_uint32_t*>(guard); + if (__sanitizer::atomic_load(atomic_guard, memory_order_relaxed)) + __sanitizer_cov(guard); +} SANITIZER_INTERFACE_ATTRIBUTE void __sanitizer_cov_indir_call16(uptr callee, uptr callee_cache16[]) { coverage_data.IndirCall(StackTrace::GetPreviousInstructionPc(GET_CALLER_PC()), |