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[NFC] Reorder ifs in BufferedStackTrace::UnwindImpl 

llvm-svn: 355376
This commit is contained in:
Vitaly Buka 2019-03-05 04:36:49 +00:00
parent 81dbc02671
commit 4d9d2251ab
1 changed files with 16 additions and 12 deletions
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28
compiler-rt/lib/asan/asan_stack.cc
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@ -38,20 +38,24 @@ void __sanitizer::BufferedStackTrace::UnwindImpl(
Unwind(max_depth, pc, bp, context, 0, 0, false);
#else
AsanThread *t = GetCurrentThread();
if (t && !t->isUnwinding()) {
uptr stack_top = t->stack_top();
uptr stack_bottom = t->stack_bottom();
ScopedUnwinding unwind_scope(t);
if (SANITIZER_MIPS && !IsValidFrame(bp, stack_top, stack_bottom))
return;
if (StackTrace::WillUseFastUnwind(request_fast))
Unwind(max_depth, pc, bp, nullptr, stack_top, stack_bottom, true);
else
if (!t) {
if (!request_fast) {
/* If GetCurrentThread() has failed, try to do slow unwind anyways. */
Unwind(max_depth, pc, bp, context, 0, 0, false);
} else if (!t && !request_fast) {
/* If GetCurrentThread() has failed, try to do slow unwind anyways. */
Unwind(max_depth, pc, bp, context, 0, 0, false);
}
return;
}
if (t->isUnwinding())
return;
uptr stack_top = t->stack_top();
uptr stack_bottom = t->stack_bottom();
ScopedUnwinding unwind_scope(t);
if (SANITIZER_MIPS && !IsValidFrame(bp, stack_top, stack_bottom))
return;
if (StackTrace::WillUseFastUnwind(request_fast))
Unwind(max_depth, pc, bp, nullptr, stack_top, stack_bottom, true);
else
Unwind(max_depth, pc, bp, context, 0, 0, false);
#endif // SANITIZER_WINDOWS
}