diff options
Diffstat (limited to 'benchmarks/string_benchmark.cpp')
| -rw-r--r-- | benchmarks/string_benchmark.cpp | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/benchmarks/string_benchmark.cpp b/benchmarks/string_benchmark.cpp index d1766758c..9be54c7b5 100644 --- a/benchmarks/string_benchmark.cpp +++ b/benchmarks/string_benchmark.cpp @@ -31,9 +31,8 @@ static void BM_string_memcmp(benchmark::State& state) { char* src_aligned = GetAlignedPtrFilled(&src, src_alignment, nbytes, 'x'); char* dst_aligned = GetAlignedPtrFilled(&dst, dst_alignment, nbytes, 'x'); - volatile int c __attribute__((unused)) = 0; while (state.KeepRunning()) { - c += memcmp(dst_aligned, src_aligned, nbytes); + benchmark::DoNotOptimize(memcmp(dst_aligned, src_aligned, nbytes)); } state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes)); @@ -129,9 +128,8 @@ static void BM_string_strlen(benchmark::State& state) { char* buf_aligned = GetAlignedPtrFilled(&buf, alignment, nbytes + 1, 'x'); buf_aligned[nbytes - 1] = '\0'; - volatile int c __attribute__((unused)) = 0; while (state.KeepRunning()) { - c += strlen(buf_aligned); + benchmark::DoNotOptimize(strlen(buf_aligned)); } state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes)); @@ -239,9 +237,8 @@ static void BM_string_strcmp(benchmark::State& state) { s1_aligned[nbytes - 1] = '\0'; s2_aligned[nbytes - 1] = '\0'; - volatile int c __attribute__((unused)); while (state.KeepRunning()) { - c = strcmp(s1_aligned, s2_aligned); + benchmark::DoNotOptimize(strcmp(s1_aligned, s2_aligned)); } state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes)); @@ -258,9 +255,8 @@ static void BM_string_strncmp(benchmark::State& state) { char* s1_aligned = GetAlignedPtrFilled(&s1, s1_alignment, nbytes, 'x'); char* s2_aligned = GetAlignedPtrFilled(&s2, s2_alignment, nbytes, 'x'); - volatile int c __attribute__((unused)); for (auto _ : state) { - c = strncmp(s1_aligned, s2_aligned, nbytes); + benchmark::DoNotOptimize(strncmp(s1_aligned, s2_aligned, nbytes)); } state.SetBytesProcessed(uint64_t(state.iterations()) * uint64_t(nbytes)); |