bits_benchmark: Fix typo to benchmark the intended function

PiperOrigin-RevId: 496788919
Change-Id: I8867f8b884b81aa2f7b6d08dabd90c75965d1939

absl/numeric/bits_benchmark.cc

@@ -24,7 +24,7 @@ namespace absl {
 namespace {
 
 template <typename T>
-static void BM_bitwidth(benchmark::State& state) {
+static void BM_bit_width(benchmark::State& state) {
   const auto count = static_cast<size_t>(state.range(0));
 
   absl::BitGen rng;
@@ -36,17 +36,17 @@ static void BM_bitwidth(benchmark::State& state) {
 
   while (state.KeepRunningBatch(static_cast<int64_t>(count))) {
     for (size_t i = 0; i < count; ++i) {
-      benchmark::DoNotOptimize(values[i]);
+      benchmark::DoNotOptimize(absl::bit_width(values[i]));
     }
   }
 }
-BENCHMARK_TEMPLATE(BM_bitwidth, uint8_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth, uint16_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth, uint32_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth, uint64_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width, uint8_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width, uint16_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width, uint32_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width, uint64_t)->Range(1, 1 << 20);
 
 template <typename T>
-static void BM_bitwidth_nonzero(benchmark::State& state) {
+static void BM_bit_width_nonzero(benchmark::State& state) {
   const auto count = static_cast<size_t>(state.range(0));
 
   absl::BitGen rng;
@@ -60,14 +60,14 @@ static void BM_bitwidth_nonzero(benchmark::State& state) {
     for (size_t i = 0; i < count; ++i) {
       const T value = values[i];
       ABSL_ASSUME(value > 0);
-      benchmark::DoNotOptimize(value);
+      benchmark::DoNotOptimize(absl::bit_width(value));
     }
   }
 }
-BENCHMARK_TEMPLATE(BM_bitwidth_nonzero, uint8_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth_nonzero, uint16_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth_nonzero, uint32_t)->Range(1, 1 << 20);
-BENCHMARK_TEMPLATE(BM_bitwidth_nonzero, uint64_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width_nonzero, uint8_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width_nonzero, uint16_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width_nonzero, uint32_t)->Range(1, 1 << 20);
+BENCHMARK_TEMPLATE(BM_bit_width_nonzero, uint64_t)->Range(1, 1 << 20);
 
 }  // namespace
 }  // namespace absl