fehler66 (more unsigned int -> double magic)

[libfirm] / ir / opt / convopt.c

diff --git a/ir/opt/convopt.c b/ir/opt/convopt.c
index 3ee9687..f829095 100644 (file)
--- a/ir/opt/convopt.c
+++ b/ir/opt/convopt.c
@@ -142,7 +142,8 @@ int get_conv_costs(const ir_node *node, ir_mode *dest_mode)
        }
 
        costs = 0;
-       arity = get_irn_arity(node);
+       // The shift count does not participate in the conv optimisation
+       arity = is_Shl(node) ? 1 : get_irn_arity(node);
        for (i = 0; i < arity; ++i) {
                ir_node *pred = get_irn_n(node, i);
                costs += imin(get_conv_costs(pred, dest_mode), 1);
@@ -192,7 +193,8 @@ ir_node *conv_transform(ir_node *node, ir_mode *dest_mode)
                return place_conv(node, dest_mode);
        }
 
-       arity = get_irn_arity(node);
+       // The shift count does not participate in the conv optimisation
+       arity = is_Shl(node) ? 1 : get_irn_arity(node);
        for (i = 0; i < arity; i++) {
                ir_node *pred = get_irn_n(node, i);
                ir_node *transformed;