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Side by Side Diff: crosstest/mem_intrin.cpp

Issue 877003003: Subzero: Use a "known" version of clang-format. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Add a clang-format blacklist. Fix formatting "errors". Created 5 years, 11 months ago
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1 /* 1 /*
2 * Simple sanity test of memcpy, memmove, and memset intrinsics. 2 * Simple sanity test of memcpy, memmove, and memset intrinsics.
3 * (fixed length buffers, variable length buffers, etc.) 3 * (fixed length buffers, variable length buffers, etc.)
4 */ 4 */
5 5
6 #include <stdint.h> /* cstdint requires -std=c++0x or higher */ 6 #include <stdint.h> /* cstdint requires -std=c++0x or higher */
7 #include <cstdlib> 7 #include <cstdlib>
8 #include <cstring> 8 #include <cstring>
9 9
10 #include "mem_intrin.h" 10 #include "mem_intrin.h"
11 11
12 typedef int elem_t; 12 typedef int elem_t;
13 13
14 /* 14 /*
15 * Reset buf to the sequence of bytes: n, n+1, n+2 ... length - 1 15 * Reset buf to the sequence of bytes: n, n+1, n+2 ... length - 1
16 */ 16 */
17 static void __attribute__((noinline)) reset_buf(uint8_t *buf, 17 static void __attribute__((noinline))
18 uint8_t init, 18 reset_buf(uint8_t *buf, uint8_t init, size_t length) {
19 size_t length) {
20 size_t i; 19 size_t i;
21 size_t v = init; 20 size_t v = init;
22 for (i = 0; i < length; ++i) 21 for (i = 0; i < length; ++i)
23 buf[i] = v++; 22 buf[i] = v++;
24 } 23 }
25 24
26 /* Do a fletcher-16 checksum so that the order of the values matter. 25 /* Do a fletcher-16 checksum so that the order of the values matter.
27 * (Not doing a fletcher-32 checksum, since we are working with 26 * (Not doing a fletcher-32 checksum, since we are working with
28 * smaller buffers, whose total won't approach 2**16). 27 * smaller buffers, whose total won't approach 2**16).
29 */ 28 */
30 static int __attribute__((noinline)) fletcher_checksum(uint8_t *buf, 29 static int __attribute__((noinline))
31 size_t length) { 30 fletcher_checksum(uint8_t *buf, size_t length) {
32 size_t i; 31 size_t i;
33 int sum = 0; 32 int sum = 0;
34 int sum_of_sums = 0; 33 int sum_of_sums = 0;
35 const int kModulus = 255; 34 const int kModulus = 255;
36 for (i = 0; i < length; ++i) { 35 for (i = 0; i < length; ++i) {
37 sum = (sum + buf[i]) % kModulus; 36 sum = (sum + buf[i]) % kModulus;
38 sum_of_sums = (sum_of_sums + sum) % kModulus; 37 sum_of_sums = (sum_of_sums + sum) % kModulus;
39 } 38 }
40 return (sum_of_sums << 8) | sum; 39 return (sum_of_sums << 8) | sum;
41 } 40 }
(...skipping 45 matching lines...) Expand 10 before | Expand all | Expand 10 after
87 memmove((void *)buf2, (void *)buf, length); 86 memmove((void *)buf2, (void *)buf, length);
88 sum2 = fletcher_checksum(buf2, length); 87 sum2 = fletcher_checksum(buf2, length);
89 return sum1 + sum2; 88 return sum1 + sum2;
90 } 89 }
91 90
92 int memset_test(uint8_t *buf, uint8_t *buf2, uint8_t init, size_t length) { 91 int memset_test(uint8_t *buf, uint8_t *buf2, uint8_t init, size_t length) {
93 memset((void *)buf, init, length); 92 memset((void *)buf, init, length);
94 memset((void *)buf2, init + 4, length); 93 memset((void *)buf2, init + 4, length);
95 return fletcher_checksum(buf, length) + fletcher_checksum(buf2, length); 94 return fletcher_checksum(buf, length) + fletcher_checksum(buf2, length);
96 } 95 }
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