we can do without the odd align.h

[libfirm] / ir / lower / lower_dw.c

diff --git a/ir/lower/lower_dw.c b/ir/lower/lower_dw.c
index 0488a4d..1eba625 100644 (file)
--- a/ir/lower/lower_dw.c
+++ b/ir/lower/lower_dw.c
@@ -959,7 +959,14 @@ static void lower_Shl(ir_node *node, ir_mode *mode, lower_env_t *env)
                        long shf_cnt = get_tarval_long(tv) - get_mode_size_bits(mode);
                        int idx = get_irn_idx(left);
 
-                       left = new_r_Conv(block, env->entries[idx]->low_word, mode);
+                       left = env->entries[idx]->low_word;
+                       if (left == NULL) {
+                               /* not ready yet, wait */
+                               pdeq_putr(env->waitq, node);
+                               return;
+                       }
+
+                       left = new_r_Conv(block, left, mode);
                        idx = get_irn_idx(node);
 
                        mode_l = env->params->low_unsigned;
@@ -999,8 +1006,13 @@ static void lower_Shrs(ir_node *node, ir_mode *mode, lower_env_t *env)
                        ir_node *c;
 
                        left = env->entries[idx]->high_word;
-                       idx = get_irn_idx(node);
+                       if (left == NULL) {
+                               /* not ready yet, wait */
+                               pdeq_putr(env->waitq, node);
+                               return;
+                       }
 
+                       idx    = get_irn_idx(node);
                        mode_l = env->params->low_unsigned;
                        if (shf_cnt > 0) {
                                c   = new_r_Const_long(irg, mode_l, shf_cnt);