131
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1 /* { dg-do run } */
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2 /* { dg-require-effective-target store_merge } */
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3 /* { dg-options "-O2 -fdump-tree-store-merging" } */
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4
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5 extern void abort (void);
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6
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7 struct S1 {
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8 unsigned int flag : 1;
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9 unsigned int size : 31;
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10 };
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11
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12 __attribute__((noipa))
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13 void foo1 (struct S1 *s, unsigned int size)
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14 {
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15 s->flag = 1;
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16 s->size = size & 0x7FFFFFFF;
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17 }
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18
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19 struct S2 {
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20 unsigned int flag : 1;
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21 unsigned int size : 15;
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22 unsigned short count;
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23 };
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24
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25 __attribute__((noipa))
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26 void foo2 (struct S2 *s, unsigned short size)
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27 {
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28 s->flag = 1;
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29 s->size = size;
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30 s->count = 0xABCD;
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31 }
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32
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33 struct S3 {
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34 unsigned int n1 : 4;
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35 unsigned int c : 8;
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36 unsigned int n2 : 4;
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37 };
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38
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39 __attribute__((noipa))
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40 void foo3 (struct S3 *s, unsigned char n1, unsigned char c, unsigned char n2)
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41 {
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42 s->n1 = n1 & 0xF;
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43 s->n2 = n2 & 0xF;
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44 s->c = c;
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45 }
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46
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47 int main (void)
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48 {
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49 struct S1 s1;
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50 struct S2 s2;
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51 struct S3 s3;
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52
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53 foo1 (&s1, 0x12345678);
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54 if (s1.flag != 1 || s1.size != 0x12345678)
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55 abort ();
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56
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57 foo2 (&s2, 0x1234);
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58 if (s2.flag != 1 || s2.size != 0x1234 || s2.count != 0xABCD)
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59 abort ();
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60
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61 foo3 (&s3, 0x12, 0x34, 0x56);
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62 if (s3.n1 != 0x2 || s3.c != 0x34 || s3.n2 != 0x6)
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63 abort ();
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64
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65 return 0;
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66 }
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67
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68 /* { dg-final { scan-tree-dump-times "Merging successful" 3 "store-merging" } } */
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