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