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111
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1 /* { dg-do compile } */
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2 /* { dg-options "-O1 -fno-trapping-math -fno-finite-math-only -fdump-tree-gimple -fdump-tree-optimized" } */
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3
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4 extern void f(int);
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5 extern void link_error ();
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6
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7 extern float x;
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8 extern double y;
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9 extern long double z;
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10
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11 int
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12 main ()
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13 {
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14 double nan = __builtin_nan ("");
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15 #ifndef __SPU__
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16 /* The SPU single-precision floating point format does not support NANs. */
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17 float nanf = __builtin_nanf ("");
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18 #endif
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19 long double nanl = __builtin_nanl ("");
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20
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21 if (!__builtin_isnan (nan))
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22 link_error ();
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23 #ifndef __SPU__
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24 if (!__builtin_isnan (nanf))
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25 link_error ();
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26 if (!__builtin_isnanf (nanf))
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27 link_error ();
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28 #endif
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29 if (!__builtin_isnan (nanl))
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30 link_error ();
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31 if (!__builtin_isnanl (nanl))
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32 link_error ();
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33
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34 if (__builtin_isnan (4.0))
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35 link_error ();
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36 if (__builtin_isnan (4.0))
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37 link_error ();
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38 if (__builtin_isnanf (4.0))
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39 link_error ();
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40 if (__builtin_isnan (4.0))
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41 link_error ();
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42 if (__builtin_isnanl (4.0))
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43 link_error ();
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44
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45 f (__builtin_isnan (x));
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46 f (__builtin_isnan (y));
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47 f (__builtin_isnanf (y));
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48 f (__builtin_isnan (z));
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49 f (__builtin_isnanl (z));
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50 }
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51
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52
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53 /* Check that all instances of __builtin_isnan were folded. */
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54 /* { dg-final { scan-tree-dump-times "isnan" 0 "gimple" } } */
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55
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56 /* Check that all instances of link_error were subject to DCE. */
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57 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized" } } */
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