reload1.c (reload_combine): Don't enable optimization for fixed registers when…

reload1.c (reload_combine): Don't enable optimization for fixed registers when encountering a BARRIER.

	* reload1.c (reload_combine): Don't enable optimization for fixed
	registers when encountering a BARRIER.

From-SVN: r33108

gcc/ChangeLog

+Wed Apr 12 16:00:25 2000  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* reload1.c (reload_combine): Don't enable optimization for fixed
+	registers when encountering a BARRIER.
+
 Wed Apr 12 15:54:11 MET DST 2000  Jan Hubicka  <jh@suse.cz>
 
 	* builtins.c (expand_builtin_memcmp): Do expansion even with

gcc/reload1.c

@@ -8447,7 +8447,8 @@ reload_combine ()
       if (GET_CODE (insn) == BARRIER)
 	{
 	  for (i = FIRST_PSEUDO_REGISTER - 1; i >= 0; --i)
-	    reg_state[i].use_index = RELOAD_COMBINE_MAX_USES;
+	    if (! fixed_regs[i])
+	      reg_state[i].use_index = RELOAD_COMBINE_MAX_USES;
 	}
       if (GET_RTX_CLASS (GET_CODE (insn)) != 'i')
 	continue;