gcc/testsuite/gcc.dg/tree-ssa/pr45397.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-phiopt -fdump-tree-evrp" } */
   3
   4 int foo_add (const unsigned char *tmp, int i, int val)
   5 {
   6   return (unsigned char)(((tmp[i] + val)>0xFF)?0xFF:(((tmp[i] + val)<0)?0:(tmp[i] + val)));
   7 }
   8
   9 int foo_sub (const unsigned char *tmp, int i, int val)
  10 {
  11   return (unsigned char)(((tmp[i] - val)>0xFF)?0xFF:(((tmp[i] - val)<0)?0:(tmp[i] - val)));
  12 }
  13
  14 int foo_mul (const unsigned char *tmp, int i, int val)
  15 {
  16   return (unsigned char)(((tmp[i] * val)>0xFF)?0xFF:(((tmp[i] * val)<0)?0:(tmp[i] * val)));
  17 }
  18
  19 /* All cases should end up using min/max for the saturated operations and
  20    have no control flow.  */
  21 /* EVRP leaves copies in the IL which confuses phiopt1 so we have
  22    to rely on phiopt2 instead.  */
  23 /* { dg-final { scan-tree-dump-not " & 255;" "evrp" } } */
  24 /* { dg-final { scan-tree-dump-times "MAX_EXPR" 3 "phiopt1" { xfail *-*-* } } } */
  25 /* { dg-final { scan-tree-dump-times "MIN_EXPR" 3 "phiopt1" { xfail *-*-* } } } */
  26 /* { dg-final { scan-tree-dump-not "if " "phiopt1" { xfail *-*-* } } } */
  27 /* { dg-final { scan-tree-dump-times "MAX_EXPR" 3 "phiopt2" } } */
  28 /* { dg-final { scan-tree-dump-times "MIN_EXPR" 3 "phiopt2" } } */
  29 /* { dg-final { scan-tree-dump-not "if " "phiopt2" } } */