File size: 2,290 Bytes
f25167e | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | {
"name": "reference_loop_114",
"definition": "loop_114",
"dataset": "simd-loop",
"author": "reference",
"spec": {
"language": "cpp",
"target_hardware": [
"aarch64"
],
"entry_point": "kernel.cpp::inner_loop_114",
"dependencies": [],
"isa_features": [],
"compile_flags": [
"-O2",
"-std=c++14",
"-fno-vectorize",
"-fno-slp-vectorize"
],
"link_flags": []
},
"sources": [
{
"path": "loop_114.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_114_data {\n int16_t *data;\n int16_t *res;\n int32_t n;\n int32_t lags;\n int16_t scale;\n};\n\n#ifdef __cplusplus\nextern \"C\" {\n#endif\nint armbench_entry_loop_114(void *data, int64_t n, int64_t lags, int64_t scale, void *res_out);\n#ifdef __cplusplus\n}\n#endif\n"
},
{
"path": "loop_114.cpp",
"content": "// Auto-generated by scripts/gen_simd_loop_harness.py \u2014 do not hand-edit.\n#include \"loop_114.h\"\n#include <stdint.h>\n\nextern \"C\" void inner_loop_114(struct loop_114_data *data);\n\nextern \"C\" int armbench_entry_loop_114(void *data, int64_t n, int64_t lags, int64_t scale, void *res_out) {\n struct loop_114_data _kd;\n _kd.data = static_cast<int16_t *>(data);\n _kd.res = static_cast<int16_t *>(res_out);\n _kd.n = static_cast<int32_t>(n);\n _kd.lags = static_cast<int32_t>(lags);\n _kd.scale = static_cast<int16_t>(scale);\n inner_loop_114(&_kd);\n return 0;\n}\n"
},
{
"path": "kernel.cpp",
"content": "#include \"loop_114.h\"\n#include <stdint.h>\n\nextern \"C\" void inner_loop_114(struct loop_114_data *data) {\n int16_t *d = data->data;\n int16_t *res = data->res;\n int32_t n = data->n;\n int32_t lags = data->lags;\n int16_t scale = data->scale;\n for (int lag = 0; lag < lags; lag++) {\n int32_t acc = 0;\n int lmt = n - lag;\n for (int i = 0; i < lmt; i++)\n acc += ((int32_t)d[i] * (int32_t)d[i + lag]) >> scale;\n res[lag] = (int16_t)(acc >> 16);\n }\n}\n"
}
],
"description": "Scalar reference (auto-vectorization disabled) for loop_114. Baseline for speedup measurement."
}
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