ia32: Prevent out-of-bounds access after calling emit_asm_operand().

[libfirm] / ir / be / belower.c

diff --git a/ir/be/belower.c b/ir/be/belower.c
index e8169a0..b8a1d01 100644 (file)
--- a/ir/be/belower.c
+++ b/ir/be/belower.c
@@ -507,7 +507,8 @@ static void gen_assure_different_pattern(ir_node *irn, ir_node *other_different,
        ir_node                     *keep, *cpy;
        op_copy_assoc_t             *entry;
 
-       if (arch_irn_is_ignore(other_different) ||
+       arch_register_req_t const *const req = arch_get_irn_register_req(other_different);
+       if (arch_register_req_is(req, ignore) ||
                        !mode_is_datab(get_irn_mode(other_different))) {
                DB((dbg_constr, LEVEL_1, "ignore constraint for %+F because other_irn is ignore or not a datab node\n", irn));
                return;
@@ -515,7 +516,7 @@ static void gen_assure_different_pattern(ir_node *irn, ir_node *other_different,
 
        op_set = &env->op_set;
        block  = get_nodes_block(irn);
-       cls    = arch_get_irn_reg_class(other_different);
+       cls    = req->cls;
 
        /* Make a not spillable copy of the different node   */
        /* this is needed because the different irn could be */