gcc/testsuite/gcc.dg/fold-ior-4.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3
   4 unsigned int test_ior(unsigned char i)
   5 {
   6   return i | (i<<8) | (i<<16) | (i<<24);
   7 }
   8
   9 unsigned int test_xor(unsigned char i)
  10 {
  11   return i ^ (i<<8) ^ (i<<16) ^ (i<<24);
  12 }
  13
  14 unsigned int test_ior_1s(unsigned char i)
  15 {
  16   return i | (i<<8);
  17 }
  18
  19 unsigned int test_ior_1u(unsigned char i)
  20 {
  21   unsigned int t = i;
  22   return t | (t<<8);
  23 }
  24
  25 unsigned int test_xor_1s(unsigned char i)
  26 {
  27   return i ^ (i<<8);
  28 }
  29
  30 unsigned int test_xor_1u(unsigned char i)
  31 {
  32   unsigned int t = i;
  33   return t ^ (t<<8);
  34 }
  35
  36 unsigned int test_ior_2s(unsigned char i)
  37 {
  38   return (i<<8) | (i<<16);
  39 }
  40
  41 unsigned int test_ior_2u(unsigned char i)
  42 {
  43   unsigned int t = i;
  44   return (t<<8) | (t<<16);
  45 }
  46
  47 unsigned int test_xor_2s(unsigned char i)
  48 {
  49   return (i<<8) ^ (i<<16);
  50 }
  51
  52 unsigned int test_xor_2u(unsigned char i)
  53 {
  54   unsigned int t = i;
  55   return (t<<8) ^ (t<<16);
  56 }
  57
  58 /* { dg-final { scan-tree-dump-not " \\^ " "optimized" } } */
  59 /* { dg-final { scan-tree-dump-not " \\| " "optimized" } } */
  60 /* { dg-final { scan-tree-dump-times " \\* 16843009" 2 "optimized" } } */
  61