gcc/testsuite/gcc.dg/pr16107.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 #include <math.h>
   5
   6 double t (double x)
   7 {
   8  x = -x;
   9  x = cos (x);
  10  x = -x;
  11  x = cosh (x);
  12  return x;
  13 }
  14
  15 /* { dg-final { scan-tree-dump-not "-x" "optimized" } } */
  16