File size: 2,242 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_034",
"definition": "loop_034",
"dataset": "simd-loop",
"author": "reference",
"spec": {
"language": "cpp",
"target_hardware": [
"aarch64"
],
"entry_point": "kernel.cpp::inner_loop_034",
"dependencies": [],
"isa_features": [],
"compile_flags": [
"-O2",
"-std=c++14",
"-fno-vectorize",
"-fno-slp-vectorize"
],
"link_flags": []
},
"sources": [
{
"path": "loop_034.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_034_data {\n uint8_t *a;\n uint8_t *b;\n uint8_t *lmt;\n uint32_t checksum;\n};\n\n#ifdef __cplusplus\nextern \"C\" {\n#endif\nint armbench_entry_loop_034(void *a, void *b, int64_t n, void *res_out);\n#ifdef __cplusplus\n}\n#endif\n"
},
{
"path": "loop_034.cpp",
"content": "// Auto-generated by scripts/gen_simd_loop_harness.py \u2014 do not hand-edit.\n#include \"loop_034.h\"\n#include <stdint.h>\n\nextern \"C\" void inner_loop_034(struct loop_034_data *data);\n\nextern \"C\" int armbench_entry_loop_034(void *a, void *b, int64_t n, void *res_out) {\n struct loop_034_data _kd;\n _kd.a = static_cast<uint8_t *>(a);\n _kd.b = static_cast<uint8_t *>(b);\n _kd.lmt = static_cast<uint8_t *>(a) + n;\n _kd.checksum = 0;\n inner_loop_034(&_kd);\n *static_cast<uint32_t *>(res_out) = _kd.checksum;\n return 0;\n}\n"
},
{
"path": "kernel.cpp",
"content": "#include \"loop_034.h\"\n#include <cstring>\n#include <stdint.h>\n\nextern \"C\" void inner_loop_034(struct loop_034_data *data) {\n uint8_t *p1 = data->a; uint8_t *p2 = data->b; uint8_t *lmt = data->lmt;\n uint32_t res = 0, cnt = 0; int length = 13;\n while (p1 < lmt) {\n int64_t r = strcmp((const char *)p1, (const char *)p2);\n uint32_t cmp = 1; if (r > 0) cmp = 2; if (r < 0) cmp = 3;\n res += cnt * cmp; p1 += length; p2 += length; cnt++;\n length = 3 + (length + 11) % 43;\n }\n data->checksum = res;\n}\n"
}
],
"description": "Scalar reference (auto-vectorization disabled) for loop_034. Baseline for speedup measurement."
}
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