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author | Jordan Rupprecht <rupprecht@google.com> | 2019-05-14 21:58:59 +0000 |
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committer | Jordan Rupprecht <rupprecht@google.com> | 2019-05-14 21:58:59 +0000 |
commit | b6bc976d7be8ee56d3be4b6dbd2f3ab0a4021c86 (patch) | |
tree | f5ed5db8cb5d237a073ea00c4d4cd63153a16a6c /lib/tsan/benchmarks/func_entry_exit.cc | |
parent | 05342ccc9cff16425c0a831fddd510879544a0bf (diff) | |
parent | 098ca93185735ec3687106d0967a70fc99a85059 (diff) | |
download | compiler-rt-b6bc976d7be8ee56d3be4b6dbd2f3ab0a4021c86.tar.gz |
Creating branches/google/stable and tags/google/stable/2019-05-14 from r360103google/stable
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/branches/google/stable@360714 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/tsan/benchmarks/func_entry_exit.cc')
-rw-r--r-- | lib/tsan/benchmarks/func_entry_exit.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lib/tsan/benchmarks/func_entry_exit.cc b/lib/tsan/benchmarks/func_entry_exit.cc new file mode 100644 index 000000000..5e0ba1d69 --- /dev/null +++ b/lib/tsan/benchmarks/func_entry_exit.cc @@ -0,0 +1,20 @@ +// Synthetic benchmark for __tsan_func_entry/exit (spends ~75% there). + +void foo(bool x); + +int main() { + volatile int kRepeat1 = 1 << 30; + const int kRepeat = kRepeat1; + for (int i = 0; i < kRepeat; i++) + foo(false); +} + +__attribute__((noinline)) void bar(volatile bool x) { + if (x) + foo(x); +} + +__attribute__((noinline)) void foo(bool x) { + if (__builtin_expect(x, false)) + bar(x); +} |