Function benchmark_baseline

tests/profile/five_bit_hd_gamma.cpp:37–62

}

__attribute__((noinline)) void benchmark_baseline(int iterations) {
    CRGB color_scale(255, 200, 180); // Typical color temperature correction
    u8 brightness = 128;            // Mid brightness

    fl::span<const CRGB> input(g_input, NUM_LEDS);
    fl::span<CRGBA5> output(g_output, NUM_LEDS);

    u8 local_sink = 0;

    for (int iter = 0; iter < iterations; iter++) {
        // Vary brightness slightly to prevent over-optimization
        u8 b = static_cast<u8>(brightness + (iter & 3));

        asm volatile("" : : : "memory");

        five_bit_hd_gamma_bitshift(input, color_scale, b, output);

        // Sink one value to prevent dead code elimination
        local_sink ^= output[iter & (NUM_LEDS - 1)].brightness_5bit;
        local_sink ^= output[iter & (NUM_LEDS - 1)].color.r;

        asm volatile("" : "+r"(local_sink) : : "memory");
    }

    g_sink = local_sink;
}

int main(int argc, char *argv[]) {
    bool json_output = (argc > 1 && fl::strcmp(argv[1], "baseline") == 0);