amd64: Correct wrong op_mode specification of xor_0 and xorpd_0.

This removes the special cases in amd64_has_addr_attr(), which corrected for the wrong op_mode.

ir/be/amd64/amd64_new_nodes.h

@@ -38,12 +38,10 @@ static inline bool amd64_has_binop_attr(const ir_node *node)
 static inline bool amd64_has_addr_attr(const ir_node *node)
 {
 	const amd64_attr_t *attr = get_amd64_attr_const(node);
-	return (amd64_has_binop_attr(node)
+	return amd64_has_binop_attr(node)
 		|| attr->op_mode == AMD64_OP_ADDR
 		|| attr->op_mode == AMD64_OP_REG
-		|| attr->op_mode == AMD64_OP_IMM32)
-	    && !is_amd64_xor_0(node)
-	    && !is_amd64_xorpd_0(node);
+		|| attr->op_mode == AMD64_OP_IMM32;
 }
 
 static inline amd64_addr_attr_t *get_amd64_addr_attr(ir_node *node)

ir/be/amd64/amd64_spec.pl

@@ -335,7 +335,7 @@ xor_0 => {
 	irn_flags => [ "modify_flags", "rematerializable" ],
 	out_reqs  => [ "gp", "flags" ],
 	outs      => [ "res", "flags" ],
-	fixed     => "amd64_op_mode_t op_mode = AMD64_OP_REG_REG;",
+	fixed     => "amd64_op_mode_t op_mode = AMD64_OP_NONE;",
 	emit      => "xorl %3D0, %3D0",
 },
 
@@ -515,7 +515,7 @@ xorpd_0 => {
 	irn_flags => [ "rematerializable" ],
 	out_reqs  => [ "xmm" ],
 	outs      => [ "res" ],
-	fixed     => "amd64_op_mode_t op_mode = AMD64_OP_REG_REG;",
+	fixed     => "amd64_op_mode_t op_mode = AMD64_OP_NONE;",
 	emit      => "xorpd %^D0, %^D0",
 },