gcc/testsuite/g++.dg/recip_sqrt_mult_2.C

   1 /* { dg-do compile } */
   2 /* { dg-options "-w -Ofast -fnon-call-exceptions -ftrapping-math -fdump-tree-recip" } */
   3
   4 /* Check that the recip_sqrt optimization does not trigger here, causing an
   5    ICE due to EH info.  */
   6
   7
   8 double res, res2, tmp;
   9 void
  10 foo1 (double a, double b)
  11 {
  12   try {
  13     tmp = 1.0 / __builtin_sqrt (a);
  14     res = tmp * tmp;
  15     res2 = a * tmp;
  16   }
  17   catch (...)
  18     { ; }
  19 }
  20
  21 void
  22 foo4 (double a, double b, int c, int d)
  23 {
  24   try {
  25     tmp = 1.0 / __builtin_sqrt (a);
  26   }
  27   catch (...)
  28     {
  29       if (c)
  30         res = tmp * tmp;
  31
  32       if (d)
  33         res2 = a * tmp;
  34     }
  35 }
  36
  37 void
  38 foo5 (double a, double b, int c, int d)
  39 {
  40   try {
  41     tmp = 1.0 / __builtin_sqrt (a);
  42     res = tmp * tmp;
  43
  44     if (d)
  45       res2 = a * tmp;
  46   }
  47   catch (...)
  48     { ; }
  49 }