From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Sun, 10 Sep 2006 16:56:45 +0000 (+0000)
Subject: Do not use time(NULL) as a seed, use a deterministic one
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=a007290a226265687b1efe8d396ed3406565206f;p=libfirm

Do not use time(NULL) as a seed, use a deterministic one
---

diff --git a/ir/be/beschedrand.c b/ir/be/beschedrand.c
index 8524abb2c..566f22ad3 100644
--- a/ir/be/beschedrand.c
+++ b/ir/be/beschedrand.c
@@ -53,7 +53,10 @@ static ir_node *random_select(void *block_env, nodeset *ready_set, nodeset *live
 
 static void *random_init_graph(const list_sched_selector_t *vtab, const arch_env_t *arch_env, ir_graph *irg)
 {
-	srand(time(0));
+	/* Using time(NULL) as a seed here gives really random results,
+	   but is NOT deterministic which makes debugging impossible.
+	   Moreover no-one want non-deterministic compilers ... */
+	srand(0x4711);
 	return (void *)arch_env;
 }