BugFix: cannot change the pin state of already pinned nodes

[r20215]

diff --git a/ir/be/ia32/ia32_transform.c b/ir/be/ia32/ia32_transform.c
index ef30747..acb3a84 100644 (file)
--- a/ir/be/ia32/ia32_transform.c
+++ b/ir/be/ia32/ia32_transform.c
@@ -720,7 +720,9 @@ static void set_am_attributes(ir_node *node, const ia32_address_mode_t *am)
        set_ia32_op_type(node, am->op_type);
        set_ia32_ls_mode(node, am->ls_mode);
        if (am->pinned == op_pin_state_pinned) {
-               set_irn_pinned(node, am->pinned);
+               /* beware: some nodes are already pinned and did not allow to change the state */
+               if (get_irn_pinned(node) != op_pin_state_pinned)
+                       set_irn_pinned(node, op_pin_state_pinned);
        }
        if (am->commutative)
                set_ia32_commutative(node);