gcc/testsuite/gcc.dg/pr42388.c

   1 /* { dg-do compile { target powerpc*-*-* ia64-*-* i?86-*-* x86_64-*-* } } */
   2 /* { dg-options "-O2 -fselective-scheduling -fmodulo-sched" } */
   3
   4 enum rtx_code
   5 {
   6   INSN, ADDR_VEC, ADDR_DIFF_VEC, CALL_INSN, CODE_LABEL, BARRIER, NOTE
   7 };
   8 typedef union rtunion_def
   9 {
  10   int rtint;
  11   char *rtstr;
  12   struct rtx_def *rtx;
  13   struct rtvec_def *rtvec;
  14 }
  15 rtunion;
  16 typedef struct rtx_def
  17 {
  18   unsigned short code;
  19   rtunion fld[1];
  20 }
  21  *rtx;
  22 typedef struct rtvec_def
  23 {
  24   unsigned num_elem;
  25   rtunion elem[1];
  26 }
  27  *rtvec;
  28 extern rtx emit_barrier (void);
  29 extern rtx emit_note (char *);
  30
  31 static void
  32 copy_loop_body (rtx *map)
  33 {
  34   int i;
  35   rtx insn, copy;
  36   rtx pat = copy->fld[3].rtx;
  37
  38   switch (insn->code)
  39     {
  40     case INSN:
  41       if (insn->fld[7].rtx)
  42         {
  43         }
  44       else if (pat->code == ADDR_VEC || pat->code == ADDR_DIFF_VEC)
  45         {
  46           int diff_vec_p = pat->code == ADDR_DIFF_VEC;
  47           int len = pat->fld[diff_vec_p].rtvec->num_elem;
  48           for (i = 0; i < len; i++)
  49             pat->fld[diff_vec_p].rtvec->elem[i].rtx->fld[5].rtint++;
  50         }
  51     case CALL_INSN:
  52       for (i = 0; i < 64; i++)
  53         map[i] = 0;
  54     case CODE_LABEL:
  55     case BARRIER:
  56       copy = emit_barrier ();
  57     case NOTE:
  58       copy = emit_note ("x");
  59     }
  60 }
  61 void
  62 unroll_loop (int insn_count, rtx *map)
  63 {
  64   if (insn_count > 50)
  65     copy_loop_body (map);
  66 }
  67