Makefile.in (bb-reoder.o): Add depdendency on cfglayout.h; remove unneded depdendencies;

	* Makefile.in (bb-reoder.o): Add depdendency on cfglayout.h;
	remove unneded depdendencies;
	(cfglayout.o): New.
	* cfglayout.c, cfglayout.h: New files; break out from ...
	* bb-reorder.c: ... here; Remove unneeded includes;

From-SVN: r46786

gcc/ChangeLog

+Mon Nov  5 16:15:25 CET 2001  Jan Hubicka  <jh@suse.cz>
+
+	* Makefile.in (bb-reoder.o): Add depdendency on cfglayout.h;
+	remove unneded depdendencies;
+	(cfglayout.o): New.
+	* cfglayout.c, cfglayout.h: New files; break out from ...
+	* bb-reorder.c: ... here; Remove unneeded includes; 
+
 2001-11-04  Alan Modra  <amodra@bigpond.net.au>
 
 	* config/rs6000/rs6000.md (load_toc_aix_{si,di}): Mark r2 as used.

gcc/Makefile.in

@@ -742,7 +742,7 @@ OBJS = alias.o bb-reorder.o bitmap.o builtins.o caller-save.o calls.o	\
  sbitmap.o sched-deps.o sched-ebb.o sched-rgn.o sched-vis.o sdbout.o	\
  sibcall.o simplify-rtx.o splay-tree.o ssa.o ssa-ccp.o ssa-dce.o stmt.o	\
  stor-layout.o stringpool.o timevar.o toplev.o tree.o tree-inline.o 	\
- unroll.o varasm.o varray.o version.o xcoffout.o			\
+ unroll.o varasm.o varray.o version.o xcoffout.o cfglayout.o		\
  $(GGC) $(out_object_file) $(EXTRA_OBJS)
 
 BACKEND = main.o libbackend.a
@@ -1578,8 +1578,10 @@ predict.o: predict.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) $(TREE_H) flags.h \
    $(RECOG_H) function.h except.h $(EXPR_H) $(TM_P_H) $(PREDICT_H)
 lists.o: lists.c $(CONFIG_H) $(SYSTEM_H) toplev.h $(RTL_H) $(GGC_H)
 bb-reorder.o : bb-reorder.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) $(TREE_H) flags.h \
-   insn-config.h $(BASIC_BLOCK_H) $(REGS_H) hard-reg-set.h output.h toplev.h \
-   $(RECOG_H) function.h except.h $(EXPR_H) $(TM_P_H)
+   $(BASIC_BLOCK_H) hard-reg-set.h output.h cfglayout.h
+cfglayout.o : cfglayout.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) $(TREE_H) \
+   insn-config.h $(BASIC_BLOCK_H) hard-reg-set.h output.h function.h \
+   cfglayout.h
 timevar.o : timevar.c $(CONFIG_H) $(SYSTEM_H) $(TIMEVAR_H) flags.h intl.h
 regrename.o : regrename.c $(CONFIG_H) $(SYSTEM_H) $(RTL_H) insn-config.h \
    $(BASIC_BLOCK_H) $(REGS_H) hard-reg-set.h output.h $(RECOG_H) function.h \

gcc/cfglayout.h

+/* Basic block reordering routines for the GNU compiler.
+   Copyright (C) 2000 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   GCC is distributed in the hope that it will be useful, but WITHOUT
+   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+   License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GCC; see the file COPYING.  If not, write to the Free
+   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+   02111-1307, USA.  */
+
+struct scope_def;
+typedef struct scope_def *scope;
+
+/* Structure to hold information about the blocks during reordering.  */
+typedef struct reorder_block_def
+{
+  rtx eff_head;
+  rtx eff_end;
+  scope scope;
+  basic_block next;
+  int visited;
+} *reorder_block_def;
+
+#define RBI(BB)	((reorder_block_def) (BB)->aux)
+
+extern void cfg_layout_initialize	PARAMS ((void));
+extern void cfg_layout_finalize		PARAMS ((void));