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, 31 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/i386/movsi-sm-1.c b/gcc/testsuite/gcc.target/i386/movsi-sm-1.c
new file mode 100644
index 000000000..35941405d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/movsi-sm-1.c
@@ -0,0 +1,31 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -fgcse-sm -minline-all-stringops" } */
+
+/* Store motion used to fail to recognize killed expressions within
+   parallels such as those generated for memory copying.  */
+
+static const char s[1024] __attribute__ ((__aligned__ (32)))
+  = "This is what we should get!";
+
+int bug (int arg) {
+  char str[sizeof(s) > 4 ? sizeof(s) : 4] __attribute__ ((__aligned__ (32)));
+
+  __builtin_memcpy (str, "Bug", 4);
+
+  if (arg <= 2)
+    __builtin_memcpy (str, s, sizeof (s));
+
+  if (arg <= 1)
+    __builtin_memcpy (str, "Err", 4);
+
+  __builtin_puts (str);
+
+  return str[0] != s[0];
+}
+
+int main () {
+  if (bug (2))
+    __builtin_abort ();
+
+  return 0;
+}