[asan] add flag coverage_pcs. When false, the coverage is not dumped as PCs. Useful e.g. if the user only needs coverage is bitset
llvm-svn: 225002
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_coverage_libcdep.cc b/compiler-rt/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
index e28a6ae..eb69172 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_coverage_libcdep.cc
@@ -509,6 +509,7 @@
if (atomic_fetch_add(&dump_once_guard, 1, memory_order_relaxed))
return;
CovDumpAsBitSet();
+ if (!common_flags()->coverage_pcs) return;
uptr size = coverage_data.size();
InternalMmapVector<u32> offsets(size);
uptr *vb = coverage_data.data();
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc b/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
index 7cc5cfe..3b1ec70 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_flags.cc
@@ -63,6 +63,7 @@
legacy_pthread_cond = false;
intercept_tls_get_addr = false;
coverage = false;
+ coverage_pcs = true; // On by default, but works only if coverage==true.
coverage_bitset = false;
coverage_direct = SANITIZER_ANDROID;
coverage_dir = ".";
@@ -151,6 +152,9 @@
ParseFlag(str, &coverage, "coverage",
"If set, coverage information will be dumped at program shutdown (if the "
"coverage instrumentation was enabled at compile time).");
+ ParseFlag(str, &coverage_pcs, "coverage_pcs",
+ "If set (and if 'coverage' is set too), the coverage information "
+ "will be dumped as a set of PC offsets for every module.");
ParseFlag(str, &coverage_bitset, "coverage_bitset",
"If set (and if 'coverage' is set too), the coverage information "
"will also be dumped as a bitset to a separate file.");
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_flags.h b/compiler-rt/lib/sanitizer_common/sanitizer_flags.h
index 6d251b4..8718089 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_flags.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_flags.h
@@ -56,6 +56,7 @@
uptr mmap_limit_mb;
uptr hard_rss_limit_mb;
bool coverage;
+ bool coverage_pcs;
bool coverage_bitset;
bool coverage_direct;
const char *coverage_dir;