gcc/testsuite/gcc.dg/tree-ssa/minmax-12.c

   1 /* { dg-do run } */
   2 /* { dg-options "-O -fdump-tree-phiopt" } */
   3
   4 #include <stdint.h>
   5
   6 __attribute__ ((noinline, noipa))
   7 uint8_t three_minmax3 (uint8_t xc, uint8_t xm, uint8_t xy) {
   8         uint8_t  xk;
   9     xc=~xc;
  10     xm=~xm;
  11     xy=~xy;
  12     if (xc > xm) {
  13         xk = (uint8_t) (xy < xc ? xc : xy);
  14     } else {
  15         xk = (uint8_t) (xm < xy ? xm : xy);
  16     }
  17     return xk;
  18 }
  19
  20 int
  21 main (void)
  22 {
  23   volatile uint8_t xy = 255;
  24   volatile uint8_t xm = 0;
  25   volatile uint8_t xc = 127;
  26   if (three_minmax3 (xc, xm, xy) != 0)
  27     __builtin_abort ();
  28   return 0;
  29 }
  30
  31 /* { dg-final { scan-tree-dump-times "MIN_EXPR" 1 "phiopt1" } } */
  32 /* { dg-final { scan-tree-dump-times "MAX_EXPR" 1 "phiopt1" } } */