From aa1341dd4a881caa579aa161fe991190f1671302 Mon Sep 17 00:00:00 2001
From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Wed, 23 Jul 2008 15:10:26 +0000
Subject: [PATCH] do NOT overwrite custom hash function

[r20630]
---
 ir/ir/iropt.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ir/ir/iropt.c b/ir/ir/iropt.c
index 907a8fe96..7603a490b 100644
--- a/ir/ir/iropt.c
+++ b/ir/ir/iropt.c
@@ -6205,11 +6205,15 @@ static ir_op_ops *firm_set_default_hash(ir_opcode code, ir_op_ops *ops)
 		ops->hash  = hash_##a; \
 		break
 
+	/* hash function already set */
+	if (ops->hash != NULL)
+		return ops;
+
 	switch (code) {
 	CASE(Const);
 	CASE(SymConst);
 	default:
-		/* use input/mode default hash */
+		/* use input/mode default hash if no function was given */
 		ops->hash = firm_default_hash;
 	}
 
-- 
2.20.1