obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 53 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/s390/frame-addr1.c b/gcc/testsuite/gcc.target/s390/frame-addr1.c
new file mode 100644
index 000000000..fda419ff0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/s390/frame-addr1.c
@@ -0,0 +1,53 @@
+/* builtin_frame_address(n) with n>0 has always been troublesome ...
+   especially when the S/390 packed stack layout comes into play.  */
+
+/* { dg-do run } */
+/* { dg-options "-O3 -fno-optimize-sibling-calls -mbackchain -mpacked-stack -msoft-float" } */
+
+#ifdef __s390x__
+/* 64bit: 3 words to be saved: backchain, r14 and r15  */
+#define SAVE_AREA_SIZE 3*8
+#else
+/* 32bit: 4 words to be saved: backchain, r13, r14 and r15  */
+#define SAVE_AREA_SIZE 4*4
+#endif
+extern void abort(void);
+
+#define EXPAND_CHECK(n)						\
+  void __attribute__((noinline))				\
+    foo1_##n (void *p)						\
+  {								\
+    if (p - __builtin_frame_address (n) != SAVE_AREA_SIZE)	\
+      abort ();							\
+  }								\
+  void __attribute__((noinline))				\
+    foo2_##n (void *p)						\
+  {								\
+    if (p - __builtin_frame_address (n) != SAVE_AREA_SIZE)	\
+      abort ();							\
+    foo1_##n (__builtin_frame_address (n));			\
+  }								\
+  void __attribute__((noinline))				\
+    foo3_##n ()							\
+  {								\
+    foo2_##n (__builtin_frame_address (n));			\
+  }								\
+  void __attribute__((noinline))				\
+    foo4_##n ()							\
+  {								\
+    foo3_##n ();						\
+  }
+
+EXPAND_CHECK (0)
+EXPAND_CHECK (1)
+EXPAND_CHECK (2)
+
+int
+main ()
+{
+  foo4_0 ();
+  foo4_1 ();
+  foo4_2 ();
+
+  return 0;
+}