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

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-optimized" } */
   3 /* { dg-require-effective-target int32plus } */
   4
   5 unsigned int test_ior(unsigned char i)
   6 {
   7   return i | (i<<8) | (i<<16) | (i<<24);
   8 }
   9
  10 unsigned int test_xor(unsigned char i)
  11 {
  12   return i ^ (i<<8) ^ (i<<16) ^ (i<<24);
  13 }
  14
  15 unsigned int test_ior_1s(unsigned char i)
  16 {
  17   return i | (i<<8);
  18 }
  19
  20 unsigned int test_ior_1u(unsigned char i)
  21 {
  22   unsigned int t = i;
  23   return t | (t<<8);
  24 }
  25
  26 unsigned int test_xor_1s(unsigned char i)
  27 {
  28   return i ^ (i<<8);
  29 }
  30
  31 unsigned int test_xor_1u(unsigned char i)
  32 {
  33   unsigned int t = i;
  34   return t ^ (t<<8);
  35 }
  36
  37 unsigned int test_ior_2s(unsigned char i)
  38 {
  39   return (i<<8) | (i<<16);
  40 }
  41
  42 unsigned int test_ior_2u(unsigned char i)
  43 {
  44   unsigned int t = i;
  45   return (t<<8) | (t<<16);
  46 }
  47
  48 unsigned int test_xor_2s(unsigned char i)
  49 {
  50   return (i<<8) ^ (i<<16);
  51 }
  52
  53 unsigned int test_xor_2u(unsigned char i)
  54 {
  55   unsigned int t = i;
  56   return (t<<8) ^ (t<<16);
  57 }
  58
  59 /* { dg-final { scan-tree-dump-not " \\^ " "optimized" } } */
  60 /* { dg-final { scan-tree-dump-not " \\| " "optimized" } } */
  61 /* { dg-final { scan-tree-dump-times " \\* 16843009" 2 "optimized" } } */
  62