gcc/testsuite/gcc.dg/pr96392.c

   1 /* PR tree-optimization/96392 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -fdump-tree-optimized" } */
   4
   5 double plus0(int x)
   6 {
   7   return x + 0.0;
   8 }
   9
  10 double sub0(int x)
  11 {
  12   return x - 0.0;
  13 }
  14
  15 double mult0(int x)
  16 {
  17   return 0.0 * x;
  18 }
  19
  20 double negate(int x)
  21 {
  22   return 0.0 - x;
  23 }
  24
  25 double subtract(int x)
  26 {
  27   return (double)x - (double)x;
  28 }
  29
  30 /* { dg-final { scan-tree-dump-not " \\+ " "optimized" } } */
  31 /* { dg-final { scan-tree-dump-not " \\- " "optimized" } } */
  32 /* { dg-final { scan-tree-dump-not " \\* " "optimized" } } */
  33