From ba20a3eb0940651ab036d0694999176ce31f4db2 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 10 Jun 2004 10:43:16 +0200
Subject: [PATCH] re PR target/15569 (Gcc 3.4.1 failed to build ia64 2.6.6
 kernel)

	PR target/15569
	PR rtl-optimization/15681
	* gcc.dg/20040609-1.c: New test.

From-SVN: r82908
---
 gcc/testsuite/ChangeLog           |  6 +++
 gcc/testsuite/gcc.dg/20040609-1.c | 73 +++++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/20040609-1.c

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index ed2a56c9ec7..eddcfcf6269 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2004-06-10  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/15569
+	PR rtl-optimization/15681
+	* gcc.dg/20040609-1.c: New test.
+
 2004-06-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR c++/14791
diff --git a/gcc/testsuite/gcc.dg/20040609-1.c b/gcc/testsuite/gcc.dg/20040609-1.c
new file mode 100644
index 00000000000..ef181476e37
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/20040609-1.c
@@ -0,0 +1,73 @@
+/* PRs target/15569, rtl-optimization/15681 */
+/* { dg-do compile } */
+/* { dg-options "-Os -frename-registers" } */
+/* { dg-options "-mconstant-gp -Os -frename-registers" { target ia64-*-* } } */
+
+struct S { struct S *a, *b; };
+struct T { struct S e; unsigned long a; int b, c; void *d; } f;
+
+unsigned long f1 (unsigned long);
+void f2 (int, struct T *);
+void *f3 (void *);
+unsigned long volatile g;
+
+static void
+f4 (struct T *p)
+{
+  f1 (f1 (((unsigned long) g - p->a) >> 20));
+}
+
+static struct T *
+f5 (void)
+{
+  struct T *g, *p;
+  struct T *q = 0;
+  for (g = p = &f; (g = p = (struct T *) (g->e.a)) != &f;)
+    if (p->b)
+      {
+	f4 (p);
+	if (p->c & 0x80000)
+	  return p;
+      }
+  return q;
+}
+
+static void
+f6 (struct T *p)
+{
+  f2 (9, p);
+}
+
+static inline void *
+f7 (struct T *t)
+{
+  void *d;
+  d = t->d;
+  if (d)
+    d = f3 (d);
+  return d;
+}
+
+static void *
+f8 (struct T *p)
+{
+  void *d = f7 (p);
+  if (!d)
+    return 0;
+  f6 (p);
+  return d;
+}
+
+static void
+f9 (void)
+{
+  struct T *p;
+  p = f5 ();
+  f8 (p);
+}
+
+void
+test (void)
+{
+  f9 ();
+}
-- 
2.30.2