- give bonus to small functions and leaves

[r19572]

diff --git a/ir/opt/opt_inline.c b/ir/opt/opt_inline.c
index e33e3f7..fef6a96 100644 (file)
--- a/ir/opt/opt_inline.c
+++ b/ir/opt/opt_inline.c
@@ -1916,11 +1916,20 @@ static int calc_inline_benefice(ir_node *call, ir_graph *callee, unsigned *local
        if (callee_env->n_blocks == 1)
                weight = weight * 3 / 2;
 
+       /* and one for small functions: we want them to be inlined in mostly every case */
+       else if (callee_env->n_nodes < 20)
+               weight += 5000;
+
+       /* and finally for leaves: they do not increase the register pressure
+          because of callee safe registers */
+       else if (callee_env->n_call_nodes == 0)
+               weight += 25;
+
        return weight;
 }
 
 /**
- * Heuristic inliner. Calculates a benifice value for every call and inlines
+ * Heuristic inliner. Calculates a benefice value for every call and inlines
  * those calls with a value higher than the threshold.
  */
 void inline_functions(int maxsize, int inline_threshold) {