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annotate gcc/testsuite/gcc.dg/vect/vect-avg-15.c @ 131:84e7813d76e9

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gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
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131
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1 /* { dg-additional-options "-O3" } */
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2 /* { dg-require-effective-target vect_int } */
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3
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4 #include "tree-vect.h"
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5
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6 #define N 80
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7
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8 void __attribute__ ((noipa))
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9 f (signed char *restrict a, signed char *restrict b,
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10 signed char *restrict c, int n, int step)
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11 {
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12 for (int j = 0; j < n; ++j)
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13 {
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14 for (int i = 0; i < 16; ++i)
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15 a[i] = (b[i] + c[i]) >> 1;
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16 a += step;
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17 b += step;
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18 c += step;
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19 }
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20 }
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21
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22 #define BASE1 -126
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23 #define BASE2 -42
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24
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25 signed char a[N], b[N], c[N];
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26
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27 int
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28 main (void)
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29 {
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30 check_vect ();
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31
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32 for (int i = 0; i < N; ++i)
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33 {
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34 a[i] = i;
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35 b[i] = BASE1 + i * 3;
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36 c[i] = BASE2 + i * 2;
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37 asm volatile ("" ::: "memory");
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38 }
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39 f (a, b, c, N / 20, 20);
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40 for (int i = 0; i < N; ++i)
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41 {
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42 int d = (BASE1 + BASE2 + i * 5) >> 1;
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43 if (a[i] != (i % 20 < 16 ? d : i))
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44 __builtin_abort ();
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45 }
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46 return 0;
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47 }
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48
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49 /* { dg-final { scan-tree-dump "vect_recog_average_pattern: detected" "vect" } } */
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50 /* { dg-final { scan-tree-dump {\.AVG_FLOOR} "vect" { target vect_avg_qi } } } */
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51 /* { dg-final { scan-tree-dump "Loop contains only SLP stmts" "vect" { target vect_avg_qi } } } */
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52 /* { dg-final { scan-tree-dump-times "vectorized 1 loop" 1 "vect" { target vect_avg_qi } } } */