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111
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1 /* { dg-require-effective-target vect_int } */
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2 /* { dg-require-effective-target arm_v8_2a_dotprod_neon_hw { target { aarch64*-*-* || arm*-*-* } } } */
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3 /* { dg-additional-options "-march=armv8.2-a+dotprod" { target { aarch64*-*-* } } } */
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4 /* { dg-add-options arm_v8_2a_dotprod_neon } */
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5
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6 #include <stdarg.h>
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7 #include "tree-vect.h"
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8
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9 #define N 64
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10
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11 #define DOT1 43680
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12
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13 signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
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14 signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
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15
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16 /* char->short->int dot product.
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17 The dot-product pattern should be detected.
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18 Vectorizable on vect_sdot_qi targets (targets that support dot-product of
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19 signed chars).
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20
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21 In the future could also be vectorized as widening-mult + widening-summation,
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22 or with type-conversion support.
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23 */
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24 __attribute__ ((noinline)) int
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25 foo1(int len) {
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26 int i;
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27 int result = 0;
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28 short prod;
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29
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30 for (i=0; i<len; i++) {
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31 prod = X[i] * Y[i];
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32 result += prod;
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33 }
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34 return result;
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35 }
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36
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37 int main (void)
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38 {
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39 int i, dot1;
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40
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41 check_vect ();
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42
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43 for (i=0; i<N; i++) {
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44 X[i] = i;
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45 Y[i] = 64-i;
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46 __asm__ volatile ("");
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47 }
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48
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49 dot1 = foo1 (N);
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50 if (dot1 != DOT1)
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51 abort ();
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52
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53 return 0;
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54 }
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55
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56 /* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1 "vect" } } */
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57 /* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" } } */
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58 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_sdot_qi } } } */
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59 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target { vect_widen_mult_qi_to_hi && vect_widen_sum_hi_to_si } } } } */
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60
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