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, 33 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr29215.c b/gcc/testsuite/gcc.dg/pr29215.c
new file mode 100644
index 000000000..aa3f82ce0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr29215.c
@@ -0,0 +1,33 @@
+/* PR middle-end/29215 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-gimple" } */
+
+char buf[5 * sizeof (int) + 1] __attribute__((aligned (__alignof__ (int))));
+
+static void
+foo (int arg1, int arg2, int arg3, int arg4, int arg5)
+{
+  __builtin_memcpy (buf, &arg1, sizeof (int));
+  __builtin_memcpy (buf + sizeof (int), &arg2, sizeof (int));
+  __builtin_memcpy (buf + 2 * sizeof (int), &arg3, sizeof (int));
+  __builtin_memcpy (buf + 3 * sizeof (int), &arg4, sizeof (int));
+  __builtin_memcpy (buf + 4 * sizeof (int), &arg5, sizeof (int));
+}
+
+int
+main (void)
+{
+  union { char buf[4]; int i; } u;
+  u.i = 0;
+  u.buf[0] = 'a';
+  u.buf[1] = 'b';
+  u.buf[2] = 'c';
+  u.buf[3] = 'd';
+  foo (u.i, u.i, u.i, u.i, u.i);
+  buf[5 * sizeof (int)] = '\0';
+  __builtin_puts (buf);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-not "memcpy" "gimple" } } */
+/* { dg-final { cleanup-tree-dump "gimple" } } */