gcc/testsuite/gcc.dg/tree-ssa/pr42585.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-optimized" } */
   3
   4 struct _fat_ptr
   5 {
   6   unsigned char *curr;
   7   unsigned char *base;
   8   unsigned char *last_plus_one;
   9 };
  10 int Cyc_string_ungetc (int ignore, struct _fat_ptr *sptr);
  11 int
  12 Cyc_string_ungetc (int ignore, struct _fat_ptr *sptr)
  13 {
  14   struct _fat_ptr *_T0;
  15   struct _fat_ptr *_T1;
  16   struct _fat_ptr _T2;
  17   int _T3;
  18   struct _fat_ptr _ans;
  19   int _change;
  20
  21   {
  22     _T0 = sptr;
  23     _T1 = sptr;
  24     _T2 = *sptr;
  25     _T3 = -1;
  26     _ans = _T2;
  27     _change = -1;
  28     _ans.curr += 4294967295U;
  29     *sptr = _ans;
  30     return (0);
  31   }
  32 }
  33
  34 /* The local aggregates . */
  35 /* Whether the structs are totally scalarized or not depends on the
  36    MOVE_RATIO macro definition in the back end.  The scalarization will
  37    not take place when using small values for MOVE_RATIO.  */
  38 /* { dg-final { scan-tree-dump-times "struct _fat_ptr _ans" 0 "optimized" { target { ! "aarch64*-*-* alpha*-*-* arm*-*-* avr-*-* nds32*-*-* powerpc*-*-* s390*-*-* sh*-*-*" } } } } */
  39 /* { dg-final { scan-tree-dump-times "struct _fat_ptr _T2" 0 "optimized" { target { ! "aarch64*-*-* alpha*-*-* arm*-*-* avr-*-* nds32*-*-* powerpc*-*-* s390*-*-* sh*-*-*" } } } } */