gcc/testsuite/gcc.dg/tree-ssa/sra-5.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 /* Tests for SRA of unions. */
   5
   6
   7 typedef union testunion
   8 {
   9   double d;
  10   char f1;
  11 } testunion;
  12
  13 void
  14 copyunion1 (testunion param)
  15 {
  16   testunion local;
  17   param.f1 = 0;
  18   local = param;
  19   if (local.f1 != 0)
  20     link_error ();
  21 }
  22
  23 void
  24 copyunion11 (testunion *param)
  25 {
  26   testunion local;
  27   param->f1 = 0;
  28   local = *param;
  29   if (local.f1 != 0)
  30     link_error ();
  31 }
  32
  33 void
  34 copyunion111 (testunion param)
  35 {
  36   testunion *local = &param;
  37   param.f1 = 0;
  38   if (local->f1 != 0)
  39     link_error ();
  40 }
  41
  42 testunion globuf;
  43 void
  44 copyunion1111 (void)
  45 {
  46   testunion local;
  47   globuf.f1 = 0;
  48   local = globuf;
  49   if (local.f1 != 0)
  50     link_error ();
  51 }
  52
  53 void
  54 copyunion11111 (void)
  55 {
  56   testunion *local = &globuf;
  57   globuf.f1 = 0;
  58   if (local->f1 != 0)
  59     link_error ();
  60 }
  61
  62 void
  63 copyunion111111 (testunion param)
  64 {
  65   static testunion local;
  66   param.f1 = 0;
  67   local = param;
  68   if (local.f1 != 0)
  69     link_error ();
  70 }
  71
  72 /* There should be no reference to link_error. */
  73 /* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */
  74 /* { dg-final { cleanup-tree-dump "optimized" } } */