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1 /* Copyright (C) 2004 Free Software Foundation.
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2
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3 Verify that integral FP expressions are optimized.
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4
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5 Written by Kaveh Ghazi, 2004-03-16. */
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6
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7 /* { dg-do link } */
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8 /* We need -ffinite-math-only so that we can fold "foo != foo", where
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9 foo is a floating point expression. We need -fno-math-errno so
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10 that various math functions are marked const/pure and can be
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11 folded. */
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12 /* { dg-options "-ffinite-math-only -fno-math-errno" } */
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13 /* { dg-add-options c99_runtime } */
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14 /* { dg-require-effective-target c99_runtime } */
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15 /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
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16
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17 extern int link_failure (int);
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18
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19 /* Test that the various FP truncation builtins detect integral
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20 arguments. */
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21 #define CHECK_FN(MATHFN) \
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22 if (__builtin_##MATHFN(i1) != i1) link_failure (__LINE__); \
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23 if (__builtin_##MATHFN##f(i1) != i1) link_failure (__LINE__); \
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24 if (__builtin_##MATHFN##l(i1) != i1) link_failure (__LINE__);
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25
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26 #define CHECK_FN_RET(MATHFN, RET) \
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27 if (__builtin_##MATHFN(i1) != (RET)(double)i1) link_failure (__LINE__); \
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28 if (__builtin_##MATHFN##f(i1) != (RET)(float)i1) link_failure (__LINE__); \
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29 if (__builtin_##MATHFN##l(i1) != (RET)(long double)i1) link_failure (__LINE__);
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30
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31 /* Check that various other integral expressions are detected. */
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32 #define CHECK_EXPR(EXPR,NAME) \
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33 if (__builtin_ceill(EXPR) != (EXPR)) link_failure (__LINE__); \
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34 if (__builtin_lroundl(EXPR) != (long)(long double)(EXPR)) link_failure (__LINE__);
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35
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36 void __attribute__ ((__noinline__)) test (int i1, int i2)
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37 {
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38 CHECK_FN(ceil);
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39 CHECK_FN(floor);
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40 CHECK_FN(nearbyint);
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41 CHECK_FN(rint);
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42 CHECK_FN(round);
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43 CHECK_FN(trunc);
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44 CHECK_FN_RET(lround, long);
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45 CHECK_FN_RET(llround, long long);
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46 CHECK_FN_RET(lrint, long);
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47 CHECK_FN_RET(llrint, long long);
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48 CHECK_FN_RET(lceil, long);
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49 CHECK_FN_RET(llceil, long long);
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50 CHECK_FN_RET(lfloor, long);
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51 CHECK_FN_RET(llfloor, long long);
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52
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53 CHECK_EXPR (5.0, REAL_CST);
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54 CHECK_EXPR (5.0F, REAL_CSTf);
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55 CHECK_EXPR (5.0L, REAL_CSTl);
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56 CHECK_EXPR ((double)i1, FLOAT_EXPR);
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57 CHECK_EXPR ((float)i1, FLOAT_EXPRf);
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58 CHECK_EXPR ((long double)i1, FLOAT_EXPRl);
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59 CHECK_EXPR (__builtin_fabs(i1), ABS_EXPR);
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60 CHECK_EXPR (__builtin_fabsf(i1), ABS_EXPRf);
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61 CHECK_EXPR (__builtin_fabsl(i1), ABS_EXPRl);
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62 CHECK_EXPR (((void)i1,(double)i2), COMPOUND_EXPR);
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63 CHECK_EXPR ((double)i1+i2, PLUS_EXPR);
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64 CHECK_EXPR ((double)i1-i2, MINUS_EXPR);
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65 CHECK_EXPR ((double)i1*i2, MULT_EXPR);
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66 }
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67
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68 int main (void)
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69 {
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70 test (1, 2);
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71 return 0;
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72 }
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