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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - tread tsan llvm flags to driver"
href="https://llvm.org/bugs/show_bug.cgi?id=30686">30686</a>
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<th>Summary</th>
<td>tread tsan llvm flags to driver
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Driver
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>dvyukov@google.com
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</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
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</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>ThreadSanitizer (tsan) pass has some internal llvm flags:
static cl::opt<bool> ClInstrumentMemoryAccesses(
"tsan-instrument-memory-accesses", cl::init(true),
cl::desc("Instrument memory accesses"), cl::Hidden);
static cl::opt<bool> ClInstrumentFuncEntryExit(
"tsan-instrument-func-entry-exit", cl::init(true),
cl::desc("Instrument function entry and exit"), cl::Hidden);
static cl::opt<bool> ClInstrumentAtomics(
"tsan-instrument-atomics", cl::init(true),
cl::desc("Instrument atomics"), cl::Hidden);
static cl::opt<bool> ClInstrumentMemIntrinsics(
"tsan-instrument-memintrinsics", cl::init(true),
cl::desc("Instrument memintrinsics (memset/memcpy/memmove)"), cl::Hidden);
They are useful for instrumentation of some special source files. E.g. not
instrumenting memory accesses to get rid of massive known race reports; not
instrumenting very performance-critical code; not instrumenting atomics in
home-grown mutex implementation, etc.
Users should not use internal llvm flags, so they should be treaded to driver.</pre>
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