From: Matthias Braun <matze@braunis.de>
Date: Sun, 7 Oct 2007 17:06:50 +0000 (+0000)
Subject: testcase for strange loop depths in loopana
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=e1b4a122dcaa69e923a89bf88ad24298953aa797;p=libfirm

testcase for strange loop depths in loopana

[r16116]
---

diff --git a/ir/be/test/loopana.c b/ir/be/test/loopana.c
new file mode 100644
index 000000000..44c56189d
--- /dev/null
+++ b/ir/be/test/loopana.c
@@ -0,0 +1,50 @@
+/* the loop analysis produces strange loop depths here... */
+
+typedef struct OP {
+	int bla;
+	int blup;
+	int op_seq;
+	int op_type;
+	struct OP *next;
+} OP;
+
+OP operation1;
+OP operation2 = { 1, 2, 0, 4, &operation1 };
+OP *ptr = &operation2;
+
+int main(int argc, char **argv)
+{
+	OP *o = ptr;
+
+	if(!o || o->op_seq)
+		return;
+	printf("%d\n", o->op_seq);
+	rand();
+
+	for( ; o; o = o->next) {
+		if(o->op_seq)
+			break;
+		if(o->bla > 52)
+			o->bla -= 20;
+
+		switch(o->bla) {
+		case 1:
+		case 201:
+			printf("%d\n", o->bla);
+			break;
+		default:
+			printf("hmm\n");
+#if 0
+			while(rand() > 10000)
+				;
+#endif
+			break;
+		case 500:
+			printf("jummy\n");
+			break;
+		}
+	}
+	printf("hjo\n");
+
+	return 0;
+}