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111
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1 /* { dg-do run } */
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2 /* { dg-skip-if "doubles are floats" { "avr-*-*" } } */
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3 /* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
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131
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4 /* { dg-final { scan-tree-dump "cdce2.c:15: .* function call is shrink-wrapped into error conditions\." "cdce" } } */
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111
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5
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6 #include <stdlib.h>
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7 #include <math.h>
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8 #include <errno.h>
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9 int total_err_count = 0;
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10 double foo_opt (double y) __attribute__((noinline));
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11 double foo_opt (double y)
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12 {
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13 double yy = 0;
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14 errno = 0;
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15 yy = log (y);
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16 return 0;
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17 }
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18
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19 double foo (double y) __attribute__((noinline));
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20 double foo (double y)
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21 {
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22 double yy = 0;
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23 errno = 0;
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24 yy = log (y);
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25 return yy;
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26 }
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27
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28 int test (double (*fp) (double y))
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29 {
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30 int i,x;
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31 for (i = -100; i < 100; i++)
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32 {
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33 fp (i);
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34 if (errno)
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35 total_err_count ++;
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36 }
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37
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38 return total_err_count;
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39 }
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40
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41 int main ()
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42 {
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43 int en1, en2;
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44 double yy;
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45 total_err_count = 0;
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46 en1 = test (foo_opt);
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47 total_err_count = 0;
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48 en2 = test (foo);
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49
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50 if (en1 != en2)
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51 abort();
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52
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53 return 0;
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54 }
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