flow.c (propagate_block): When a prologue/epilogue insn is marked dead...

        * flow.c (propagate_block): When a prologue/epilogue insn
        is marked dead, unconditionally clear libcall_is_dead and
        insn_is_dead, and only dump rtl if warnings aren't being
        suppressed.

From-SVN: r31327

gcc/ChangeLog

+2000-01-11  Clinton Popetz  <cpopetz@cygnus.com>
+
+	* flow.c (propagate_block): When a prologue/epilogue insn
+        is marked dead, unconditionally clear libcall_is_dead and
+        insn_is_dead, and only dump rtl if warnings aren't being
+        suppressed.
+
 Tue Jan 11 16:26:47 MET 2000  Jan Hubicka <jh@suse.cz>
 
 	* i386.c (ix86_attr_length_default): Handle TYPE_STR and TYPE_CLD.

gcc/flow.c

@@ -3295,14 +3295,17 @@ propagate_block (old, first, last, significant, bnum, flags)
 
 	  /* We almost certainly don't want to delete prologue or epilogue
 	     instructions.  Warn about probable compiler losage.  */
-	  if ((flags & PROP_KILL_DEAD_CODE)
-	      && insn_is_dead
+	  if (insn_is_dead
 	      && reload_completed
 	      && (HAVE_epilogue || HAVE_prologue)
 	      && prologue_epilogue_contains (insn))
 	    {
-	      warning ("ICE: would have deleted prologue/epilogue insn");
-	      debug_rtx (insn);
+	      if (flags & PROP_KILL_DEAD_CODE)
+	        { 
+	      	  warning ("ICE: would have deleted prologue/epilogue insn");
+	      	  if (!inhibit_warnings)
+	  	    debug_rtx (insn);
+	        }
 	      libcall_is_dead = insn_is_dead = 0;
 	    }