mirror of https://github.com/google/benchmark.git
37 lines
742 B
C++
37 lines
742 B
C++
#include "benchmark/benchmark.h"
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#include <cstdint>
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namespace {
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#if defined(__GNUC__)
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std::uint64_t double_up(const std::uint64_t x) __attribute__ ((const));
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#endif
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std::uint64_t double_up(const std::uint64_t x) {
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return x * 2;
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}
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}
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int main(int, char*[]) {
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// this test verifies compilation of DoNotOptimize() for some types
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char buffer8[8];
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benchmark::DoNotOptimize(buffer8);
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char buffer20[20];
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benchmark::DoNotOptimize(buffer20);
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char buffer1024[1024];
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benchmark::DoNotOptimize(buffer1024);
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benchmark::DoNotOptimize(&buffer1024[0]);
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int x = 123;
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benchmark::DoNotOptimize(x);
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benchmark::DoNotOptimize(&x);
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benchmark::DoNotOptimize(x += 42);
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benchmark::DoNotOptimize(double_up(x));
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return 0;
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}
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