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

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdump-tree-original" } */
   3 /* { dg-options "-fdump-tree-original -fno-common" { target hppa*-*-hpux* } } */
   4
   5 typedef char char4[4] __attribute__ ((aligned (4)));
   6 char4 c4[4] __attribute__ ((aligned (16)));
   7
   8 typedef char char16[16] __attribute__ ((aligned (16)));
   9 char16 c16[4] __attribute__ ((aligned (4)));
  10
  11 int f1 (void)
  12 {
  13   /* 12 */
  14   return 15 & (__SIZE_TYPE__)&c4[3];
  15 }
  16
  17 int f2 (int i)
  18 {
  19   /* Indeterminate */
  20   return 15 & (__SIZE_TYPE__)&c4[i];
  21 }
  22
  23 int f3 (int i)
  24 {
  25   /* 0 */
  26   return 3 & (__SIZE_TYPE__)&c4[i];
  27 }
  28
  29 int f4 (int i)
  30 {
  31   /* Indeterminate */
  32   return 7 & (__SIZE_TYPE__)&c16[i];
  33 }
  34
  35 int f5 (int i)
  36 {
  37   /* 0 */
  38   return 3 & (__SIZE_TYPE__)&c16[i];
  39 }
  40
  41 /* { dg-final { scan-tree-dump-times "return 12" 1 "original" } } */
  42 /* { dg-final { scan-tree-dump-times "\& 15" 1 "original" } } */
  43 /* { dg-final { scan-tree-dump-times "return 0" 2 "original" } } */
  44 /* { dg-final { scan-tree-dump-times "\& 7" 1 "original" } } */
  45 /* { dg-final { cleanup-tree-dump "original" } } */