From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Fri, 9 May 2008 02:40:17 +0000 (+0000)
Subject: - give bonus to small functions and leaves
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=7dfcddaf2dfe8322182d100532b16c48e438752d;p=libfirm

- give bonus to small functions and leaves

[r19572]
---

diff --git a/ir/opt/opt_inline.c b/ir/opt/opt_inline.c
index e33e3f7b3..fef6a9615 100644
--- 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) {