{
  "name": "reference_loop_108",
  "definition": "loop_108",
  "dataset": "simd-loop",
  "author": "reference",
  "spec": {
    "language": "cpp",
    "target_hardware": [
      "aarch64"
    ],
    "entry_point": "kernel.cpp::inner_loop_108",
    "dependencies": [],
    "isa_features": [],
    "compile_flags": [
      "-O2",
      "-std=c++14",
      "-fno-vectorize",
      "-fno-slp-vectorize"
    ],
    "link_flags": []
  },
  "sources": [
    {
      "path": "loop_108.h",
      "content": "// Auto-generated by scripts/gen_simd_loop_harness.py \u2014 do not hand-edit.\n#pragma once\n#include <stdint.h>\n\nstruct loop_108_data {\n    uint32_t *rgba;\n    uint8_t *y;\n    int64_t n;\n};\n\n#ifdef __cplusplus\nextern \"C\" {\n#endif\nint armbench_entry_loop_108(void *rgba, int64_t n, void *res_out);\n#ifdef __cplusplus\n}\n#endif\n"
    },
    {
      "path": "loop_108.cpp",
      "content": "// Auto-generated by scripts/gen_simd_loop_harness.py \u2014 do not hand-edit.\n#include \"loop_108.h\"\n#include <stdint.h>\n\nextern \"C\" void inner_loop_108(struct loop_108_data *data);\n\nextern \"C\" int armbench_entry_loop_108(void *rgba, int64_t n, void *res_out) {\n    struct loop_108_data data;\n    data.rgba = static_cast<uint32_t *>(rgba);\n    data.y = static_cast<uint8_t *>(res_out);\n    data.n = static_cast<int64_t>(n);\n    inner_loop_108(&data);\n    return 0;\n}\n"
    },
    {
      "path": "kernel.cpp",
      "content": "#include \"loop_108.h\"\n#include <stdint.h>\n\nextern \"C\" void inner_loop_108(struct loop_108_data *data) {\n    uint32_t *rgba = data->rgba;\n    uint8_t *y = data->y;\n    int64_t n = data->n;\n    for (int64_t i = 0; i < n; i++) {\n        y[i] = (rgba[i] >> 24) >> 2;\n        y[i] += ((rgba[i] >> 16) & 0xff) >> 1;\n        y[i] += ((rgba[i] >> 16) & 0xff) >> 3;\n        y[i] += ((rgba[i] >> 8) & 0xff) >> 3;\n    }\n}\n"
    }
  ],
  "description": "Scalar reference (auto-vectorization disabled) for loop_108. Baseline for speedup measurement."
}