lower_dw: don't fail on Tuple-nodes

diff --git a/ir/lower/lower_dw.c b/ir/lower/lower_dw.c
index d3b1da5..6d34e1d 100644 (file)
--- a/ir/lower/lower_dw.c
+++ b/ir/lower/lower_dw.c
@@ -1207,6 +1207,23 @@ static void lower_Not(ir_node *node, ir_mode *mode)
        ir_set_dw_lowered(node, res_low, res_high);
 }
 
+static void lower_Proj(ir_node *node, ir_mode *op_mode)
+{
+       ir_mode *mode = get_irn_mode(node);
+       ir_node *pred;
+       (void)op_mode;
+       if (mode != env->high_signed && mode != env->high_unsigned)
+               return;
+       /* skip tuples */
+       pred = get_Proj_pred(node);
+       if (is_Tuple(pred)) {
+               long                   pn    = get_Proj_proj(node);
+               ir_node               *op    = get_irn_n(pred, pn);
+               const lower64_entry_t *entry = get_node_entry(op);
+               ir_set_dw_lowered(node, entry->low_word, entry->high_word);
+       }
+}
+
 static bool is_equality_cmp(const ir_node *node)
 {
        ir_relation relation = get_Cmp_relation(node);
@@ -3064,6 +3081,7 @@ void ir_prepare_dw_lowering(const lwrdw_param_t *new_param)
        ir_register_dw_lower_function(op_Mux,     lower_Mux);
        ir_register_dw_lower_function(op_Not,     lower_Not);
        ir_register_dw_lower_function(op_Or,      lower_Or);
+       ir_register_dw_lower_function(op_Proj,    lower_Proj);
        ir_register_dw_lower_function(op_Return,  lower_Return);
        ir_register_dw_lower_function(op_Shl,     lower_Shl);
        ir_register_dw_lower_function(op_Shr,     lower_Shr);