s390.c (struct s390_frame_layout): New fields first_save_gpr_slot and last_save_gpr_slot.

2005-11-09  Andreas Krebbel  <krebbel1@de.ibm.com>

	* config/s390/s390.c (struct s390_frame_layout): New fields 
	first_save_gpr_slot and last_save_gpr_slot.
	(cfun_grps_save_area_size, s390_frame_info, s390_emit_prologue,  
	s390_emit_epilogue, s390_initial_elimination_offset): Replaced 
	first_save_gpr and last_save_gpr with the _slot variants.
	(s390_register_info): Calculate first_save_gpr_slot and 
	last_save_gpr_slot using regs_ever_live.
	* testsuite/gcc.dg/pr24624.c: Testcase added.

From-SVN: r106688

1 files changed, 67 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr24624.c b/gcc/testsuite/gcc.dg/pr24624.c
new file mode 100644
index 0000000..bc2070c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr24624.c
@@ -0,0 +1,67 @@
+/* This used to ICE due to a backend problem on s390.  */
+
+/* { dg-do compile } */
+/* { dg-options "-O1 -mpacked-stack" } */
+
+typedef unsigned int __u32;
+typedef struct
+{
+  volatile int counter;
+} __attribute__ ((aligned (4))) atomic_t;
+static __inline__ __attribute__ ((always_inline))
+     void atomic_inc (volatile atomic_t * v)
+{
+  (
+    {
+    typeof (v->counter) old_val, new_val;
+  __asm__ __volatile__ (
+	"   l     %0,0(%3)\n" 
+	"0: lr    %1,%0\n" 
+	"   ar    %1,%4\n" 
+	"   cs    %0,%1,0(%3)\n" 
+	"   jl    0b": 
+	"=&d" (old_val), "=&d" (new_val), "=m" (((atomic_t *) (v))->counter): 
+	"a" (v), "d" (1), "m" (((atomic_t *) (v))->counter):
+	"cc", "memory");
+    });
+}
+extern unsigned long volatile __attribute__ ((section (".data"))) jiffies;
+struct inet_peer
+{
+  unsigned long dtime;
+  atomic_t refcnt;
+};
+static volatile int peer_total;
+int inet_peer_threshold = 65536 + 128;
+int inet_peer_minttl = 120 * 100;
+int inet_peer_maxttl = 10 * 60 * 100;
+static int
+cleanup_once (unsigned long ttl)
+{
+  struct inet_peer *p;
+  if (p != ((void *) 0))
+    {
+      if (((
+	     {
+	     1;}
+	   ) && ((long) (jiffies) - (long) (p->dtime + ttl) < 0)))
+	{
+	  return -1;
+	}
+      atomic_inc (&p->refcnt);
+    }
+}
+struct inet_peer *
+inet_getpeer (__u32 daddr, int create)
+{
+  int i;
+  int ttl;
+  if (peer_total >= inet_peer_threshold)
+    ttl = inet_peer_minttl;
+  else
+    ttl =
+      inet_peer_maxttl - (inet_peer_maxttl -
+			  inet_peer_minttl) / 100 * peer_total /
+      inet_peer_threshold * 100;
+  for (i = 0; i < 30 && !cleanup_once (ttl); i++);
+}