haifa-sched.c (struct sched_block_state): New.

	* haifa-sched.c (struct sched_block_state): New.
	(schedule_block): Move some local variables into such a structure.

From-SVN: r176243

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 881d83f4445bef688f34c4aeb8d5edd7ea82e815..cd02017211ecb792333609f22e6729cc2d9925d8 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2011-07-13  Bernd Schmidt  <bernds@codesourcery.com>
+
+       * haifa-sched.c (struct sched_block_state): New.
+       (schedule_block): Move some local variables into such a structure.
+
 2011-07-13  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
        * config/i386/crtprec.c: Move to ../libgcc/config/i386.

diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c
index bc36d07f6e5f8b4b96e346fbaa77d06761c0d3c6..5eba79e4f981457aff9bbc7cdfab74da0d398e2e 100644 (file)
--- a/gcc/haifa-sched.c
+++ b/gcc/haifa-sched.c
@@ -1638,6 +1638,16 @@ sched_setup_bb_reg_pressure_info (basic_block bb, rtx after)
   initiate_bb_reg_pressure_info (bb);
   setup_insn_max_reg_pressure (after, false);
 }
+\f
+/* A structure that holds local state for the loop in schedule_block.  */
+struct sched_block_state
+{
+  /* True if no real insns have been scheduled in the current cycle.  */
+  bool first_cycle_insn_p;
+  /* Initialized with the machine's issue rate every cycle, and updated
+     by calls to the variable_issue hook.  */
+  int can_issue_more;
+};
 
 /* INSN is the "currently executing insn".  Launch each insn which was
    waiting on INSN.  READY is the ready list which contains the insns
@@ -2924,8 +2934,7 @@ void
 schedule_block (basic_block *target_bb)
 {
   int i;
-  bool first_cycle_insn_p;
-  int can_issue_more;
+  struct sched_block_state ls;
   state_t temp_state = NULL;  /* It is used for multipass scheduling.  */
   int sort_p, advance, start_clock_var;
 
@@ -3075,9 +3084,9 @@ schedule_block (basic_block *target_bb)
       if (ready.n_ready == 0)
        continue;
 
-      first_cycle_insn_p = true;
+      ls.first_cycle_insn_p = true;
       cycle_issued_insns = 0;
-      can_issue_more = issue_rate;
+      ls.can_issue_more = issue_rate;
       for (;;)
        {
          rtx insn;
@@ -3118,7 +3127,7 @@ schedule_block (basic_block *target_bb)
                }
            }
 
-         if (first_cycle_insn_p && !ready.n_ready)
+         if (ls.first_cycle_insn_p && !ready.n_ready)
            break;
 
          /* Allow the target to reorder the list, typically for
@@ -3127,13 +3136,13 @@ schedule_block (basic_block *target_bb)
              && (ready.n_ready == 0
                  || !SCHED_GROUP_P (ready_element (&ready, 0))))
            {
-             if (first_cycle_insn_p && targetm.sched.reorder)
-               can_issue_more
+             if (ls.first_cycle_insn_p && targetm.sched.reorder)
+               ls.can_issue_more
                  = targetm.sched.reorder (sched_dump, sched_verbose,
                                           ready_lastpos (&ready),
                                           &ready.n_ready, clock_var);
-             else if (!first_cycle_insn_p && targetm.sched.reorder2)
-               can_issue_more
+             else if (!ls.first_cycle_insn_p && targetm.sched.reorder2)
+               ls.can_issue_more
                  = targetm.sched.reorder2 (sched_dump, sched_verbose,
                                            ready.n_ready
                                            ? ready_lastpos (&ready) : NULL,
@@ -3151,7 +3160,7 @@ schedule_block (basic_block *target_bb)
            }
 
          if (ready.n_ready == 0
-             && can_issue_more
+             && ls.can_issue_more
              && reload_completed)
            {
              /* Allow scheduling insns directly from the queue in case
@@ -3165,7 +3174,7 @@ schedule_block (basic_block *target_bb)
            }
 
          if (ready.n_ready == 0
-             || !can_issue_more
+             || !ls.can_issue_more
              || state_dead_lock_p (curr_state)
              || !(*current_sched_info->schedule_more_p) ())
            break;
@@ -3176,7 +3185,7 @@ schedule_block (basic_block *target_bb)
              int res;
 
              insn = NULL_RTX;
-             res = choose_ready (&ready, first_cycle_insn_p, &insn);
+             res = choose_ready (&ready, ls.first_cycle_insn_p, &insn);
 
              if (res < 0)
                /* Finish cycle.  */
@@ -3256,14 +3265,14 @@ schedule_block (basic_block *target_bb)
                     || asm_noperands (PATTERN (insn)) >= 0);
 
          if (targetm.sched.variable_issue)
-           can_issue_more =
+           ls.can_issue_more =
              targetm.sched.variable_issue (sched_dump, sched_verbose,
-                                           insn, can_issue_more);
+                                           insn, ls.can_issue_more);
          /* A naked CLOBBER or USE generates no instruction, so do
             not count them against the issue rate.  */
          else if (GET_CODE (PATTERN (insn)) != USE
                   && GET_CODE (PATTERN (insn)) != CLOBBER)
-           can_issue_more--;
+           ls.can_issue_more--;
          advance = schedule_insn (insn);
 
          /* After issuing an asm insn we should start a new cycle.  */
@@ -3272,7 +3281,7 @@ schedule_block (basic_block *target_bb)
          if (advance != 0)
            break;
 
-         first_cycle_insn_p = false;
+         ls.first_cycle_insn_p = false;
          if (ready.n_ready > 0)
            prune_ready_list (temp_state, false);
        }