func (r BenchmarkResult) MemString() string {
	return fmt.Sprintf("%8d B/op\t%8d allocs/op",
		r.AllocedBytesPerOp(), r.AllocsPerOp())
}

// benchmarkName returns full name of benchmark including procs suffix.
func benchmarkName(name string, n int) string {
	if n != 1 {
		return fmt.Sprintf("%s-%d", name, n)
	}
	return name
}

type benchContext struct {
	match *matcher

        )

    if gen_benchmark:
        benchmark_name = name + "_benchmark"
        benchmark_file = benchmark_name + ".cc"
        benchmark_main = ("//tensorflow/compiler/aot:" +
                          "benchmark_main.template")

        # Rule to rewrite benchmark.cc to produce the benchmark_file.
        native.genrule(
            name = ("gen_" + benchmark_name),
            srcs = [
                benchmark_main,