lcm.c: Move all mode-switching related functions from here...

	* lcm.c: Move all mode-switching related functions from here...
	* mode-switching.c: ...to this new file.
	* doc/passes.texi: Update accordingly.

	* basic-block.h (label_value_list): Remove extern decl.
	* cfgrtl.c (label_value_list): Remove.
	(can_delete_label_p): Don't look at it.
	* cfgcleanup.c (cleanup_cfg): Don't free it.

	* common.opt: Don't refer to non-existing flag_alias_check.

From-SVN: r100591

gcc/ChangeLog

+2005-06-04  Steven Bosscher  <stevenb@suse.de>
+
+	* lcm.c: Move all mode-switching related functions from here...
+	* mode-switching.c: ...to this new file.
+	* doc/passes.texi: Update accordingly.
+
+	* basic-block.h (label_value_list): Remove extern decl.
+	* cfgrtl.c (label_value_list): Remove.
+	(can_delete_label_p): Don't look at it.
+	* cfgcleanup.c (cleanup_cfg): Don't free it.
+
+	* common.opt: Don't refer to non-existing flag_alias_check.
+
 2005-06-04  David Edelsohn  <edelsohn@gnu.org>
 
 	* config/rs6000/aix52.h (ASM_CPU_SPEC): Add power5.

gcc/Makefile.in

@@ -949,7 +949,7 @@ OBJS-common = \
  haifa-sched.o hooks.o ifcvt.o insn-attrtab.o insn-emit.o insn-modes.o	   \
  insn-extract.o insn-opinit.o insn-output.o insn-peep.o insn-recog.o	   \
  integrate.o intl.o jump.o  langhooks.o lcm.o lists.o local-alloc.o  	   \
- loop.o modulo-sched.o optabs.o options.o opts.o			   \
+ loop.o mode-switching.o modulo-sched.o optabs.o options.o opts.o	   \
  params.o postreload.o postreload-gcse.o predict.o			   \
  insn-preds.o pointer-set.o postreload.o				   \
  print-rtl.o print-tree.o profile.o value-prof.o var-tracking.o		   \
@@ -2099,6 +2099,9 @@ resource.o : resource.c $(CONFIG_H) $(RTL_H) hard-reg-set.h $(SYSTEM_H) \
 lcm.o : lcm.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) $(REGS_H) \
    hard-reg-set.h $(FLAGS_H) real.h insn-config.h $(INSN_ATTR_H) $(RECOG_H) \
    $(BASIC_BLOCK_H) $(TM_P_H) function.h output.h
+mode-switching.o : mode-switching.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
+   $(RTL_H) $(REGS_H) hard-reg-set.h $(FLAGS_H) real.h insn-config.h \
+   $(INSN_ATTR_H) $(RECOG_H) $(BASIC_BLOCK_H) $(TM_P_H) function.h output.h
 tree-ssa-dce.o : tree-ssa-dce.c $(CONFIG_H) $(SYSTEM_H) $(TREE_H) \
     $(RTL_H) $(TM_P_H) $(TREE_FLOW_H) $(DIAGNOSTIC_H) $(TIMEVAR_H) $(TM_H) \
     coretypes.h $(TREE_DUMP_H) tree-pass.h $(FLAGS_H) $(BASIC_BLOCK_H) \

gcc/basic-block.h

@@ -446,10 +446,6 @@ extern bool rediscover_loops_after_threading;
 #define FOR_ALL_BB_FN(BB, FN) \
   for (BB = ENTRY_BLOCK_PTR_FOR_FUNCTION (FN); BB; BB = BB->next_bb)
 
-/* Special labels found during CFG build.  */
-
-extern GTY(()) rtx label_value_list;
-
 extern bitmap_obstack reg_obstack;
 
 /* Indexed by n, gives number of basic block that  (REG n) is used in.

gcc/cfgcleanup.c

@@ -2132,8 +2132,6 @@ cleanup_cfg (int mode)
       delete_dead_jumptables ();
     }
 
-  /* Kill the data we won't maintain.  */
-  free_EXPR_LIST_list (&label_value_list);
   timevar_pop (TV_CLEANUP_CFG);
 
   return changed;

gcc/cfgrtl.c

@@ -59,11 +59,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "target.h"
 #include "cfgloop.h"
 
-/* The labels mentioned in non-jump rtl.  Valid during find_basic_blocks.  */
-/* ??? Should probably be using LABEL_NUSES instead.  It would take a
-   bit of surgery to be able to use or co-opt the routines in jump.  */
-rtx label_value_list;
-
 static int can_delete_note_p (rtx);
 static int can_delete_label_p (rtx);
 static void commit_one_edge_insertion (edge, int);
@@ -103,8 +98,7 @@ can_delete_label_p (rtx label)
   return (!LABEL_PRESERVE_P (label)
 	  /* User declared labels must be preserved.  */
 	  && LABEL_NAME (label) == 0
-	  && !in_expr_list_p (forced_labels, label)
-	  && !in_expr_list_p (label_value_list, label));
+	  && !in_expr_list_p (forced_labels, label));
 }
 
 /* Delete INSN by patching it out.  Return the next insn.  */

gcc/common.opt

@@ -234,7 +234,6 @@ Common RejectNegative Joined UInteger
 ;   global variables.
 ; 2 if pointer arguments may not alias each other and may not
 ;   alias global variables.  True in Fortran.
-;   The value is ignored if flag_alias_check is 0.
 fargument-alias
 Common Report Var(flag_argument_noalias,0)
 Specify that arguments may alias each other and globals

gcc/doc/passes.texi

@@ -639,7 +639,8 @@ The pass is located in @file{regmove.c}.
 This pass looks for instructions that require the processor to be in a
 specific ``mode'' and minimizes the number of mode changes required to
 satisfy all users.  What these modes are, and what they apply to are
-completely target-specific.  The source is located in @file{lcm.c}.
+completely target-specific.
+The source is located in @file{mode-switching.c}.
 
 @cindex modulo scheduling
 @cindex sms, swing, software pipelining