jump.c (jump_optimize_1): Don't try to duplicate the loop exit test if optimizing for size.

        * jump.c (jump_optimize_1): Don't try to duplicate the loop exit
        test if optimizing for size.

From-SVN: r30559

gcc/ChangeLog

+Wed Nov 17 15:18:30 1999  Richard Henderson  <rth@cygnus.com>
+
+	* jump.c (jump_optimize_1): Don't try to duplicate the loop exit
+	test if optimizing for size.
+
 1999-11-17  Mark Mitchell  <mark@codesourcery.com>
 
 	* Makefile.in (toplev.o): Depend on except.h.
 	(dwarf2out.o,loop.o,flow.o,haifa-sched.o): Likewise.
 
 Mon Nov 15 22:45:39 CET 1999  Jan Hubicka  <hubicka@freesoft.cz>
+
 	* i386.md (divmodsi4): Rewrite to expander.
 	(*divmodsi4_nocltd): New.
 	(*divmodsi4_cltd): New.

gcc/jump.c

@@ -319,8 +319,12 @@ jump_optimize_1 (f, cross_jump, noop_moves, after_regscan, mark_labels_only)
 	  /* See if this is a NOTE_INSN_LOOP_BEG followed by an unconditional
 	     jump.  Try to optimize by duplicating the loop exit test if so.
 	     This is only safe immediately after regscan, because it uses
-	     the values of regno_first_uid and regno_last_uid.  */
-	  if (after_regscan && GET_CODE (insn) == NOTE
+	     the values of regno_first_uid and regno_last_uid.  Don't do this
+	     if optimizing for size.  */
+
+	  if (! optimize_size
+	      && after_regscan
+	      && GET_CODE (insn) == NOTE
 	      && NOTE_LINE_NUMBER (insn) == NOTE_INSN_LOOP_BEG
 	      && (temp1 = next_nonnote_insn (insn)) != 0
 	      && simplejump_p (temp1))