re PR rtl-optimization/8300 ([sparc] ICE in gen_reg_rtx, at emit-rtl.c:662)

	PR opt/8300
	* toplev.c (rest_of_compilation): Delay no_new_pseudos until
	after initialize_uninitialized_subregs; update reg info assuming
	new pseudos were created.

From-SVN: r66030

gcc/ChangeLog

+2003-04-23  Richard Henderson  <rth@redhat.com>
+
+	PR opt/8300
+	* toplev.c (rest_of_compilation): Delay no_new_pseudos until
+	after initialize_uninitialized_subregs; update reg info assuming
+	new pseudos were created.
+
 2003-04-23  Neil Booth  <neil@daikokuya.co.uk>
 
 	* Makefile.in (c-lex.o, LIBCPP_OBJS, cpplex.o): Update.

gcc/toplev.c

@@ -3216,8 +3216,6 @@ rest_of_compilation (decl)
 		 | (flag_thread_jumps ? CLEANUP_THREADING : 0));
   timevar_pop (TV_FLOW);
 
-  no_new_pseudos = 1;
-
   if (warn_uninitialized || extra_warnings)
     {
       uninitialized_vars_warning (DECL_INITIAL (decl));
@@ -3227,17 +3225,19 @@ rest_of_compilation (decl)
 
   if (optimize)
     {
-      clear_bb_flags ();
       if (!flag_new_regalloc && initialize_uninitialized_subregs ())
 	{
-	  /* Insns were inserted, so things might look a bit different.  */
+	  /* Insns were inserted, and possibly pseudos created, so
+	     things might look a bit different.  */
 	  insns = get_insns ();
-	  update_life_info_in_dirty_blocks (UPDATE_LIFE_GLOBAL_RM_NOTES,
-					    PROP_LOG_LINKS | PROP_REG_INFO
-					    | PROP_DEATH_NOTES);
+	  allocate_reg_life_data ();
+	  update_life_info (NULL, UPDATE_LIFE_GLOBAL_RM_NOTES,
+			    PROP_LOG_LINKS | PROP_REG_INFO | PROP_DEATH_NOTES);
 	}
     }
 
+  no_new_pseudos = 1;
+
   close_dump_file (DFI_life, print_rtl_with_bb, insns);
 
   ggc_collect ();