PR middle-end/49875

[pf3gnuchains/gcc-fork.git] / gcc / sched-rgn.c

diff --git a/gcc/sched-rgn.c b/gcc/sched-rgn.c
index 6c4fd46..9208ef2 100644 (file)
--- a/gcc/sched-rgn.c
+++ b/gcc/sched-rgn.c
@@ -1,6 +1,6 @@
 /* Instruction scheduling pass.
    Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010
+   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2010, 2011
    Free Software Foundation, Inc.
    Contributed by Michael Tiemann (tiemann@cygnus.com) Enhanced by,
    and currently maintained by, Jim Wilson (wilson@cygnus.com)
@@ -1762,29 +1762,18 @@ update_live_1 (int src, rtx x)
 
   regno = REGNO (reg);
 
-  if (regno >= FIRST_PSEUDO_REGISTER || !global_regs[regno])
+  if (! HARD_REGISTER_NUM_P (regno)
+      || !global_regs[regno])
     {
-      if (regno < FIRST_PSEUDO_REGISTER)
+      for (i = 0; i < candidate_table[src].update_bbs.nr_members; i++)
        {
-         int j = hard_regno_nregs[regno][GET_MODE (reg)];
-         while (--j >= 0)
-           {
-             for (i = 0; i < candidate_table[src].update_bbs.nr_members; i++)
-               {
-                 basic_block b = candidate_table[src].update_bbs.first_member[i];
+         basic_block b = candidate_table[src].update_bbs.first_member[i];
 
-                 SET_REGNO_REG_SET (df_get_live_in (b), regno + j);
-               }
-           }
-       }
-      else
-       {
-         for (i = 0; i < candidate_table[src].update_bbs.nr_members; i++)
-           {
-             basic_block b = candidate_table[src].update_bbs.first_member[i];
-
-             SET_REGNO_REG_SET (df_get_live_in (b), regno);
-           }
+         if (HARD_REGISTER_NUM_P (regno))
+           bitmap_set_range (df_get_live_in (b), regno,
+                             hard_regno_nregs[regno][GET_MODE (reg)]);
+         else
+           bitmap_set_bit (df_get_live_in (b), regno);
        }
     }
 }
@@ -2068,12 +2057,12 @@ static int sched_n_insns;
 /* Implementations of the sched_info functions for region scheduling.  */
 static void init_ready_list (void);
 static int can_schedule_ready_p (rtx);
-static void begin_schedule_ready (rtx, rtx);
+static void begin_schedule_ready (rtx);
 static ds_t new_ready (rtx, ds_t);
 static int schedule_more_p (void);
 static const char *rgn_print_insn (const_rtx, int);
 static int rgn_rank (rtx, rtx);
-static void compute_jump_reg_dependencies (rtx, regset, regset, regset);
+static void compute_jump_reg_dependencies (rtx, regset);
 
 /* Functions for speculative scheduling.  */
 static void rgn_add_remove_insn (rtx, int);
@@ -2163,7 +2152,7 @@ can_schedule_ready_p (rtx insn)
    can_schedule_ready_p () differs from the one passed to
    begin_schedule_ready ().  */
 static void
-begin_schedule_ready (rtx insn, rtx last ATTRIBUTE_UNUSED)
+begin_schedule_ready (rtx insn)
 {
   /* An interblock motion?  */
   if (INSN_BB (insn) != target_bb)
@@ -2306,16 +2295,12 @@ contributes_to_priority (rtx next, rtx insn)
   return BLOCK_TO_BB (BLOCK_NUM (next)) == BLOCK_TO_BB (BLOCK_NUM (insn));
 }
 
-/* INSN is a JUMP_INSN, COND_SET is the set of registers that are
-   conditionally set before INSN.  Store the set of registers that
-   must be considered as used by this jump in USED and that of
-   registers that must be considered as set in SET.  */
+/* INSN is a JUMP_INSN.  Store the set of registers that must be
+   considered as used by this jump in USED.  */
 
 static void
 compute_jump_reg_dependencies (rtx insn ATTRIBUTE_UNUSED,
-                              regset cond_exec ATTRIBUTE_UNUSED,
-                              regset used ATTRIBUTE_UNUSED,
-                              regset set ATTRIBUTE_UNUSED)
+                              regset used ATTRIBUTE_UNUSED)
 {
   /* Nothing to do here, since we postprocess jumps in
      add_branch_dependences.  */
@@ -2380,7 +2365,9 @@ static const struct haifa_sched_info rgn_const_sched_info =
 
   rgn_add_remove_insn,
   begin_schedule_ready,
+  NULL,
   advance_target_bb,
+  NULL, NULL,
   SCHED_RGN
 };
 
@@ -3406,7 +3393,8 @@ rgn_add_block (basic_block bb, basic_block after)
       /* Now POS is the index of the last block in the region.  */
 
       /* Find index of basic block AFTER.  */
-      for (; rgn_bb_table[pos] != after->index; pos--);
+      for (; rgn_bb_table[pos] != after->index; pos--)
+       ;
 
       pos++;
       gcc_assert (pos > ebb_head[i - 1]);
@@ -3453,12 +3441,14 @@ rgn_fix_recovery_cfg (int bbi, int check_bbi, int check_bb_nexti)
 
   for (old_pos = ebb_head[BLOCK_TO_BB (check_bbi) + 1] - 1;
        rgn_bb_table[old_pos] != check_bb_nexti;
-       old_pos--);
+       old_pos--)
+    ;
   gcc_assert (old_pos > ebb_head[BLOCK_TO_BB (check_bbi)]);
 
   for (new_pos = ebb_head[BLOCK_TO_BB (bbi) + 1] - 1;
        rgn_bb_table[new_pos] != bbi;
-       new_pos--);
+       new_pos--)
+    ;
   new_pos++;
   gcc_assert (new_pos > ebb_head[BLOCK_TO_BB (bbi)]);
 
@@ -3518,7 +3508,7 @@ gate_handle_sched2 (void)
 {
 #ifdef INSN_SCHEDULING
   return optimize > 0 && flag_schedule_insns_after_reload
-    && dbg_cnt (sched2_func);
+    && !targetm.delay_sched2 && dbg_cnt (sched2_func);
 #else
   return 0;
 #endif
@@ -3561,7 +3551,6 @@ struct rtl_opt_pass pass_sched =
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
   TODO_df_finish | TODO_verify_rtl_sharing |
-  TODO_dump_func |
   TODO_verify_flow |
   TODO_ggc_collect                      /* todo_flags_finish */
  }
@@ -3583,7 +3572,6 @@ struct rtl_opt_pass pass_sched2 =
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
   TODO_df_finish | TODO_verify_rtl_sharing |
-  TODO_dump_func |
   TODO_verify_flow |
   TODO_ggc_collect                      /* todo_flags_finish */
  }