* dwarf2out.c (lower_bound_default): For DW_LANG_Python return

[pf3gnuchains/gcc-fork.git] / gcc / loop-init.c

diff --git a/gcc/loop-init.c b/gcc/loop-init.c
index 3bdafda..854bb97 100644 (file)
--- a/gcc/loop-init.c
+++ b/gcc/loop-init.c
@@ -1,5 +1,6 @@
 /* Loop optimizer initialization routines and RTL loop optimization passes.
-   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -59,14 +60,21 @@ loop_optimizer_init (unsigned flags)
         passes may want.  */
       gcc_assert ((flags & ~(LOOPS_MAY_HAVE_MULTIPLE_LATCHES
                             | LOOPS_HAVE_RECORDED_EXITS)) == 0);
-      current_loops->state = LOOPS_MAY_HAVE_MULTIPLE_LATCHES;
+      loops_state_set (LOOPS_MAY_HAVE_MULTIPLE_LATCHES);
     }
   else
     disambiguate_loops_with_multiple_latches ();
 
   /* Create pre-headers.  */
   if (flags & LOOPS_HAVE_PREHEADERS)
-    create_preheaders (CP_SIMPLE_PREHEADERS);
+    {
+      int cp_flags = CP_SIMPLE_PREHEADERS;
+
+      if (flags & LOOPS_HAVE_FALLTHRU_PREHEADERS)
+        cp_flags |= CP_FALLTHRU_PREHEADERS;
+
+      create_preheaders (cp_flags);
+    }
 
   /* Force all latches to have only single successor.  */
   if (flags & LOOPS_HAVE_SIMPLE_LATCHES)
@@ -105,7 +113,7 @@ loop_optimizer_finalize (void)
     }
 
   /* Clean up.  */
-  if (current_loops->state & LOOPS_HAVE_RECORDED_EXITS)
+  if (loops_state_satisfies_p (LOOPS_HAVE_RECORDED_EXITS))
     release_recorded_exits ();
   flow_loops_free (current_loops);
   ggc_free (current_loops);
@@ -118,7 +126,10 @@ loop_optimizer_finalize (void)
 
   /* Checking.  */
 #ifdef ENABLE_CHECKING
-  verify_flow_info ();
+  /* FIXME: no point to verify flow info after bundling on ia64.  Use this
+     hack for achieving this.  */
+  if (!reload_completed)
+    verify_flow_info ();
 #endif
 }
 
@@ -140,8 +151,10 @@ gate_handle_loop2 (void)
              ));
 }
 
-struct tree_opt_pass pass_loop2 =
+struct rtl_opt_pass pass_loop2 =
 {
+ {
+  RTL_PASS,
   "loop2",                              /* name */
   gate_handle_loop2,                   /* gate */
   NULL,                                 /* execute */
@@ -154,8 +167,8 @@ struct tree_opt_pass pass_loop2 =
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
   TODO_dump_func |
-  TODO_ggc_collect,                     /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_ggc_collect                      /* todo_flags_finish */
+ }
 };
 
 \f
@@ -164,7 +177,7 @@ static unsigned int
 rtl_loop_init (void)
 {
   gcc_assert (current_ir_type () == IR_RTL_CFGLAYOUT);
-  
+
   if (dump_file)
     dump_flow_info (dump_file, dump_flags);
 
@@ -172,8 +185,10 @@ rtl_loop_init (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_loop_init =
+struct rtl_opt_pass pass_rtl_loop_init =
 {
+ {
+  RTL_PASS,
   "loop2_init",                           /* name */
   NULL,                                 /* gate */
   rtl_loop_init,                        /* execute */
@@ -185,8 +200,8 @@ struct tree_opt_pass pass_rtl_loop_init =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_dump_func | TODO_verify_rtl_sharing /* todo_flags_finish */
+ }
 };
 
 \f
@@ -205,8 +220,10 @@ rtl_loop_done (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_loop_done =
+struct rtl_opt_pass pass_rtl_loop_done =
 {
+ {
+  RTL_PASS,
   "loop2_done",                          /* name */
   NULL,                                 /* gate */
   rtl_loop_done,                        /* execute */
@@ -218,8 +235,8 @@ struct tree_opt_pass pass_rtl_loop_done =
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_dump_func | TODO_verify_rtl_sharing /* todo_flags_finish */
+ }
 };
 
 \f
@@ -238,22 +255,25 @@ rtl_move_loop_invariants (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_move_loop_invariants =
+struct rtl_opt_pass pass_rtl_move_loop_invariants =
 {
+ {
+  RTL_PASS,
   "loop2_invariant",                    /* name */
   gate_rtl_move_loop_invariants,        /* gate */
   rtl_move_loop_invariants,             /* execute */
   NULL,                                 /* sub */
   NULL,                                 /* next */
   0,                                    /* static_pass_number */
-  TV_LOOP,                              /* tv_id */
+  TV_LOOP_MOVE_INVARIANTS,              /* tv_id */
   0,                                    /* properties_required */
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
-  0,                                    /* todo_flags_start */ 
-  TODO_df_finish |                      /* This is shutting down the instance in loop_invariant.c  */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  0,                                    /* todo_flags_start */
+  TODO_df_verify |
+  TODO_df_finish | TODO_verify_rtl_sharing |
+  TODO_dump_func                        /* todo_flags_finish */
+ }
 };
 
 \f
@@ -272,21 +292,23 @@ rtl_unswitch (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_unswitch =
+struct rtl_opt_pass pass_rtl_unswitch =
 {
+ {
+  RTL_PASS,
   "loop2_unswitch",                      /* name */
   gate_rtl_unswitch,                    /* gate */
   rtl_unswitch,                         /* execute */
   NULL,                                 /* sub */
   NULL,                                 /* next */
   0,                                    /* static_pass_number */
-  TV_LOOP,                              /* tv_id */
+  TV_LOOP_UNSWITCH,                     /* tv_id */
   0,                                    /* properties_required */
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_dump_func | TODO_verify_rtl_sharing, /* todo_flags_finish */
+ }
 };
 
 \f
@@ -318,21 +340,23 @@ rtl_unroll_and_peel_loops (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_unroll_and_peel_loops =
+struct rtl_opt_pass pass_rtl_unroll_and_peel_loops =
 {
+ {
+  RTL_PASS,
   "loop2_unroll",                        /* name */
   gate_rtl_unroll_and_peel_loops,       /* gate */
   rtl_unroll_and_peel_loops,            /* execute */
   NULL,                                 /* sub */
   NULL,                                 /* next */
   0,                                    /* static_pass_number */
-  TV_LOOP,                              /* tv_id */
+  TV_LOOP_UNROLL,                       /* tv_id */
   0,                                    /* properties_required */
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_dump_func | TODO_verify_rtl_sharing, /* todo_flags_finish */
+ }
 };
 
 \f
@@ -357,20 +381,22 @@ rtl_doloop (void)
   return 0;
 }
 
-struct tree_opt_pass pass_rtl_doloop =
+struct rtl_opt_pass pass_rtl_doloop =
 {
+ {
+  RTL_PASS,
   "loop2_doloop",                        /* name */
   gate_rtl_doloop,                      /* gate */
   rtl_doloop,                           /* execute */
   NULL,                                 /* sub */
   NULL,                                 /* next */
   0,                                    /* static_pass_number */
-  TV_LOOP,                              /* tv_id */
+  TV_LOOP_DOLOOP,                       /* tv_id */
   0,                                    /* properties_required */
   0,                                    /* properties_provided */
   0,                                    /* properties_destroyed */
   0,                                    /* todo_flags_start */
-  TODO_dump_func,                       /* todo_flags_finish */
-  'L'                                   /* letter */
+  TODO_dump_func | TODO_verify_rtl_sharing /* todo_flags_finish */
+ }
 };