gcc/testsuite/gcc.dg/recip_sqrt_mult_3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Ofast -fdump-tree-optimized" } */
   3 /* { dg-additional-options "-fcompare-debug" { target { ! powerpc-ibm-aix* } } } */
   4
   5 double
   6 foo (double a)
   7 {
   8   double tmp = 1.0f / __builtin_sqrt (a);
   9   return tmp * tmp;
  10 }
  11
  12 /* { dg-final { scan-tree-dump-not "__builtin_sqrt" "optimized" } } */