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111
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1 /* PR middle-end/18548 */
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2 /* Test case reduced by Andrew Pinski <pinskia@physics.uc.edu> */
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3 /* { dg-do run } */
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4 /* { dg-options "-O1 " } */
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5 /* Option -fno-tree-lrs removed By Andrew MacLeod since it is no longer
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6 supported in the compiler beginning with GCC 4.3. */
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7 /* m32c has varying sized pointers */
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8 /* { dg-skip-if "" { "m32c-*-*" } { "*" } { "-mcpu=m32c" "-mcpu=m32cm" } } */
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9
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10 __extension__ typedef __INTPTR_TYPE__ intptr_t;
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11
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12 extern void abort (void);
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13
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14 intptr_t fff[10];
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15
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16 void f(intptr_t a, intptr_t b)
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17 {
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18 intptr_t crcc = b;
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19 intptr_t d = *((intptr_t*)(a+1));
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20 int i;
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21
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22 a = d >= b? d:b;
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23
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24
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25 for(i=0;i<10;i++)
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26 fff[i] = a;
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27 }
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28
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29 /* The variable a cannot be a local variable as we get better aliasing
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30 now and decide that the store to a is dead. The better aliasing comes
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31 from better representation of pointer arithmetic. */
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32 intptr_t a = 10;
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33 int main(void)
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34 {
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35 int i;
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36 f((intptr_t)(&a)-1,0);
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37 for(i = 0;i<10;i++)
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38 if (fff[i]!=10)
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39 abort ();
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40 return 0;
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41 }
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42
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