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, 58 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/stack-usage-1.c b/gcc/testsuite/gcc.dg/stack-usage-1.c
new file mode 100644
index 000000000..7de282df2
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/stack-usage-1.c
@@ -0,0 +1,58 @@
+/* { dg-do compile } */
+/* { dg-options "-fstack-usage" } */
+
+/* This is aimed at testing basic support for -fstack-usage in the back-ends.
+   See the SPARC back-end for an example (grep flag_stack_usage in sparc.c).
+   Once it is implemented, adjust SIZE below so that the stack usage for the
+   function FOO is reported as 256 or 264 in the stack usage (.su) file.
+   Then check that this is the actual stack usage in the assembly file.  */
+
+#if defined(__i386__)
+#  define SIZE 248
+#elif defined(__x86_64__)
+#  define SIZE 356
+#elif defined (__sparc__)
+#  if defined (__arch64__)
+#    define SIZE 76
+#  else
+#    define SIZE 160
+#  endif
+#elif defined(__hppa__)
+#  define SIZE 192
+#elif defined (__alpha__)
+#  define SIZE 240
+#elif defined (__ia64__)
+#  define SIZE 272
+#elif defined(__mips__)
+#  if defined (__mips_abicalls) \
+      || (defined _MIPS_SIM && (_MIPS_SIM ==_ABIN32 || _MIPS_SIM==_ABI64))
+#    define SIZE 240
+#  else
+#    define SIZE 248
+#  endif
+#elif defined (__powerpc__) || defined (__PPC__) || defined (__ppc__) \
+      || defined (__POWERPC__) || defined (PPC) || defined (_IBMR2)
+#  define SIZE 240
+#elif defined (__AVR__)
+#  define SIZE 254
+#elif defined (__s390x__)
+#  define SIZE 96  /* 256 - 160 bytes for register save area */
+#elif defined (__s390__)
+#  define SIZE 160 /* 256 -  96 bytes for register save area */
+#elif defined (__SPU__)
+#  define SIZE 224
+#elif defined (__sh__)
+#  define SIZE 252
+#else
+#  define SIZE 256
+#endif
+
+int foo (void)
+{
+  char arr[SIZE];
+  arr[0] = 1;
+  return 0;
+}
+
+/* { dg-final { scan-stack-usage "foo\t\(256|264\)\tstatic" } } */
+/* { dg-final { cleanup-stack-usage } } */