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111
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1 /* PR debug/43983 */
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2 /* { dg-do run } */
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3 /* { dg-options "-g" } */
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4
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5 struct A { int i; int j; };
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6 struct B { int : 4; int i : 12; int j : 12; int : 4; };
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7
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8 __attribute__((noinline)) void
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9 bar (int x)
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10 {
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11 asm volatile ("" : : "r" (x) : "memory");
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12 }
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13
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14 __attribute__((noinline)) int
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15 f1 (int k)
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16 {
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17 struct A a = { 4, k + 6 };
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18 asm ("" : "+r" (a.i));
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19 a.j++;
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20 bar (a.i); /* { dg-final { gdb-test 21 "a.i" "4" } } */
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21 bar (a.j); /* { dg-final { gdb-test 21 "a.j" "14" } } */
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22 return a.i + a.j;
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23 }
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24
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25 __attribute__((noinline)) int
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26 f2 (int k)
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27 {
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28 int a[2] = { 4, k + 6 };
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29 asm ("" : "+r" (a[0]));
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30 a[1]++;
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31 bar (a[0]); /* { dg-final { gdb-test 32 "a\[0\]" "4" } } */
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32 bar (a[1]); /* { dg-final { gdb-test 32 "a\[1\]" "14" } } */
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33 return a[0] + a[1];
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34 }
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35
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36 __attribute__((noinline)) int
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37 f3 (int k)
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38 {
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39 struct B a = { 4, k + 6 };
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40 asm ("" : "+r" (a.i));
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41 a.j++;
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42 bar (a.i); /* { dg-final { gdb-test 43 "a.i" "4" } } */
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43 bar (a.j); /* { dg-final { gdb-test 43 "a.j" "14" } } */
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44 return a.i + a.j;
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45 }
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46
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47 int
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48 main (void)
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49 {
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50 int k;
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51 asm ("" : "=r" (k) : "0" (7));
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52 f1 (k);
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53 f2 (k);
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54 f3 (k);
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55 return 0;
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56 }
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