expr.c (expand_expr, [...]): If have conditional move, don't use ORIGINAL_TARGET unless REG.

Wed Mar 18 13:42:01 1998  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
        * expr.c (expand_expr, case COND_EXPR): If have conditional move,
        don't use ORIGINAL_TARGET unless REG.

From-SVN: r18671

gcc/ChangeLog

+Wed Mar 18 13:42:01 1998  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>
+
+	* expr.c (expand_expr, case COND_EXPR): If have conditional move,
+	don't use ORIGINAL_TARGET unless REG.
+
 Wed Mar 18 16:53:19 1998  J"orn Rennecke <amylaar@cygnus.co.uk>
 
 	* netbsd.h (ASM_OUTPUT_ALIGN): Redefine.

gcc/expr.c

@@ -6765,6 +6765,11 @@ expand_expr (exp, target, tmode, modifier)
 			 && REGNO (original_target) >= FIRST_PSEUDO_REGISTER
 			 && original_target == var_rtx (singleton)))
 		 && GET_MODE (original_target) == mode
+#ifdef HAVE_conditional_move
+		 && (! can_conditionally_move_p (mode)
+		     || GET_CODE (original_target) == REG
+		     || TREE_ADDRESSABLE (type))
+#endif
 		 && ! (GET_CODE (original_target) == MEM
 		       && MEM_VOLATILE_P (original_target)))
 	  temp = original_target;