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111
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1 /* PR tree-optimization/46620 */
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2 /* SRA bitfield grouping used to lose track at padding bitfields in
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3 the middle of a word. */
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4 /* { dg-do run } */
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5 /* { dg-options "-O2" } */
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6
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7 #include <stdlib.h>
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8
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9 struct PCT
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10 {
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11 unsigned char pi1 : 4;
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12 unsigned char pi2 : 3;
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13 unsigned char pif : 5;
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14
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15 unsigned char sl : 2;
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16 unsigned char uc : 1;
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17 unsigned char st : 1;
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18
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19 unsigned char p : 1;
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20 unsigned char cs : 1;
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21 unsigned char ss : 1;
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22
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23 unsigned char pc : 3;
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24 unsigned char dmv : 4;
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25 unsigned char cv : 4;
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26 };
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27
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28 struct rt
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29 {
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30 struct rt* d;
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31 void (*edo)(void * const);
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32 short lId;
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33 char dac;
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34 };
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35
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36 struct pedr
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37 {
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38 struct rt re;
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39 struct PCT pc;
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40 unsigned char mid;
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41 } ;
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42
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43 void __attribute__((__noinline__))
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44 rei(struct rt* const me, unsigned short anId, void *ad )
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45 {
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46 asm volatile ("");
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47 }
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48
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49 void __attribute__((__noinline__))
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50 pedrdo(void * const p)
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51 {
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52 asm volatile ("");
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53 }
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54
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55 void __attribute__((__noinline__))
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56 pedri (struct pedr* const me, struct PCT ppc, unsigned char pmid)
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57 {
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58 rei(&(me->re), 0x7604, 0);
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59 me->pc = ppc;
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60 me->mid = pmid;
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61 (me)->re.edo = pedrdo;
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62 }
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63
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64 int main()
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65 {
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66 struct PCT ps;
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67 struct pedr pm;
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68
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69 pm.pc.dmv = 0;
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70 ps.dmv = 1;
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71 pedri(&pm, ps, 32);
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72
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73 if (pm.pc.dmv != 1)
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74 abort ();
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75 exit (0);
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76 }
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