gcc/testsuite/gcc.dg/vect/pr48765.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-additional-options "-O3 -mdejagnu-cpu=power6 -mno-vsx" } */
   3
   4 enum reg_class
   5 {
   6   NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS, XGRF_REGS, ALL_REGS,
   7     LIM_REG_CLASSES
   8 };
   9 enum machine_mode
  10 {
  11   VOIDmode, QImode, HImode, PSImode, SImode, PDImode, DImode, TImode, OImode,
  12     QFmode, HFmode, TQFmode, SFmode, DFmode, XFmode, TFmode, SCmode, DCmode,
  13     XCmode, TCmode, CQImode, CHImode, CSImode, CDImode, CTImode, COImode,
  14     BLKmode, CCmode, CCEVENmode, MAX_MACHINE_MODE
  15 };
  16 typedef struct rtx_def
  17 {
  18   int mode:8;
  19 }
  20  *rtx;
  21 extern rtx *regno_reg_rtx;
  22 typedef unsigned int HARD_REG_ELT_TYPE;
  23 typedef HARD_REG_ELT_TYPE HARD_REG_SET[((64 + 32 - 1) / 32)];
  24 extern int reg_alloc_order[64];
  25 extern int max_regno;
  26 extern int *reg_n_calls_crossed;
  27 extern short *reg_renumber;
  28 static int *reg_where_dead;
  29 static int *reg_where_born;
  30 static int *reg_order;
  31 static char *regs_change_size;
  32 static HARD_REG_SET *after_insn_hard_regs;
  33 static int stupid_find_reg (int, enum reg_class, enum machine_mode, int, int,
  34                             int);
  35 enum reg_class reg_preferred_class (int);
  36 void
  37 stupid_life_analysis (f, nregs, file)
  38      int nregs, file;
  39      rtx f;
  40 {
  41   register int i;
  42   for (i = (((64)) + 3) + 1; i < max_regno; i++)
  43     {
  44       register int r = reg_order[i];
  45       if ((int) LIM_REG_CLASSES > 1)
  46         reg_renumber[r] =
  47           stupid_find_reg (reg_n_calls_crossed[r], reg_preferred_class (r),
  48                            ((regno_reg_rtx[r])->mode), reg_where_born[r],
  49                            reg_where_dead[r], regs_change_size[r]);
  50     }
  51 }
  52
  53 static int
  54 stupid_find_reg (call_preserved, class, mode, born_insn, dead_insn,
  55                  changes_size)
  56      int call_preserved, born_insn, dead_insn, changes_size;
  57      enum reg_class class;
  58      enum machine_mode mode;
  59 {
  60   register int i, ins;
  61   HARD_REG_SET used, this_reg;
  62   for (ins = born_insn; ins < dead_insn; ins++)
  63     do
  64       {
  65         register HARD_REG_ELT_TYPE *scan_tp_ = (used), *scan_fp_ =
  66           (after_insn_hard_regs[ins]);
  67         for (i = 0; i < ((64 + 32 - 1) / 32); i++)
  68           *scan_tp_++ |= *scan_fp_++;
  69       }
  70     while (0);
  71   for (i = 0; i < 64; i++)
  72     {
  73       int regno = reg_alloc_order[i];
  74       if (((used)[(regno) / ((unsigned) 32)] &
  75            (((HARD_REG_ELT_TYPE) (1)) << ((regno) % ((unsigned) 32)))))
  76         {
  77           register int j;
  78           if (j == regno)
  79             return regno;
  80         }
  81     }
  82 }
  83