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111
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1 #include "tree-vect.h"
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2
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3 extern void abort (void);
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4
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5 static void
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6 foo (int *out, const int *lp, unsigned samples)
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7 {
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8 int x, target;
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9 for (x = 0, target = 0; x < (int)samples; x += 2, target++)
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10 {
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11 out[x] = lp[target];
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12 out[x - 1] = out[x - 2] + out[x];
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13 }
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14 }
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15
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16 static void
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17 foo_novec (int *out, const int *lp, unsigned samples)
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18 {
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19 int x, target;
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20 for (x = 0, target = 0; x < (int)samples; x += 2, target++)
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21 {
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22 out[x] = lp[target];
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23 out[x - 1] = out[x - 2] + out[x];
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24 __asm__ volatile ("" : : : "memory");
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25 }
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26 }
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27
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28 int main(void)
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29 {
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30 const int lp[25] = {
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31 0, 2, 4, 6, 8,
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32 10, 12, 14, 16,
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33 18, 20, 22, 24,
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34 26, 28, 30, 32,
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35 34, 36, 38, 40,
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36 42, 44, 46, 48,
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37 };
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38 int out[49] = {0};
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39 int out2[49] = {0};
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40 int s;
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41
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42 check_vect ();
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43
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44 foo (out + 2, lp + 1, 48);
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45 foo_novec (out2 + 2, lp + 1, 48);
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46
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47 for (s = 0; s < 49; s++)
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48 if (out[s] != out2[s])
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49 abort ();
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50
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51 return 0;
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52 }
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53
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