1 files changed, 85 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/sh/pr51244-13.c b/gcc/testsuite/gcc.target/sh/pr51244-13.c
new file mode 100644
index 00000000000..7e823dc030c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/sh/pr51244-13.c
@@ -0,0 +1,85 @@
+/* This is a case extracted from CSiBE which contained the following
+   sequence:
+	shll	r0
+	movt	r0
+	tst	r0,r0
+	bf	.L11
+   where the 'tst r0,r0' before the branch can be omitted by inverting the
+   branch condition.  The tested function contains two other tst insns.  If
+   everything goes as expected we will be seeing only those other two tst
+   insns.  */
+/* { dg-do compile { target "sh*-*-*" } } */
+/* { dg-options "-O2" } */
+/* { dg-skip-if "" { "sh*-*-*" } { "-m5*" } { "" } } */
+/* { dg-final { scan-assembler-times "tst" 2 } } */
+
+static __inline__ int
+__test_bit (unsigned long nr, volatile void * addr)
+{
+  /*  This is on purpose.  */
+  int oldbit;
+  return oldbit & 1;
+}
+
+static __inline__ int
+__constant_test_bit (unsigned long nr, volatile void * addr)
+{
+  return (((volatile char *) addr)[(nr>>3)^7] & (1<<(nr&7))) != 0;
+}
+
+struct list_head
+{
+  struct list_head *next, *prev;
+};
+
+static inline void
+__list_del (struct list_head *prev, struct list_head *next)
+{
+  next->prev = prev;
+  prev->next = next;
+}
+
+static inline void
+list_del (struct list_head *entry)
+{
+ __list_del(entry->prev, entry->next);
+ entry->next = 0;
+ entry->prev = 0;
+}
+
+extern int nr_active_pages;
+extern int nr_inactive_pages;
+extern struct list_head active_list;
+
+typedef struct page
+{
+ unsigned long flags;
+ struct list_head lru;
+} mem_map_t;
+
+void
+activate_page_nolock (struct page * page)
+{
+ if ((__builtin_constant_p((6))
+      ? __constant_test_bit((6),(&(page)->flags))
+      : __test_bit((6),(&(page)->flags)) )
+     && !(__builtin_constant_p((7))
+          ? __constant_test_bit((7),(&(page)->flags))
+          : __test_bit((7),(&(page)->flags)) ))
+    {
+      list_del(&(page)->lru);
+      nr_inactive_pages--;
+      if (!(__builtin_constant_p(6) ? __constant_test_bit((6),(&(page)->flags))
+				    : __test_bit((6),(&(page)->flags))))
+	printk("", "", 43);
+
+      if ((__builtin_constant_p(7) ? __constant_test_bit((7),(&(page)->flags))
+				   : __test_bit((7),(&(page)->flags))))
+	printk("", "", 43);
+
+      (__builtin_constant_p(7) ? __constant_set_bit((7),(&(page)->flags))
+			        : __set_bit((7),(&(page)->flags)) );
+      list_add(&(page)->lru, &active_list);
+      nr_active_pages++;
+    }
+}