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, 79 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/torture/pr16104-1.c b/gcc/testsuite/gcc.dg/torture/pr16104-1.c
new file mode 100644
index 000000000..ad5eda65f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr16104-1.c
@@ -0,0 +1,79 @@
+/* PR rtl-optimization/16104 */
+/* { dg-do run { target i?86-*-* x86_64-*-* } } */
+/* { dg-options "-msse2" } */
+/* { dg-require-effective-target sse2_runtime } */
+
+extern void abort (void);
+
+typedef int V2SI __attribute__ ((vector_size (8)));
+typedef unsigned int V2USI __attribute__ ((vector_size (8)));
+typedef short V2HI __attribute__ ((vector_size (4)));
+typedef unsigned int V2UHI __attribute__ ((vector_size (4)));
+
+int
+test1 (void)
+{
+  return (long long) (V2SI) 0LL;
+}
+
+int
+test2 (V2SI x)
+{
+  return (long long) x;
+}
+
+V2SI
+test3 (void)
+{
+  return (V2SI) (long long) (int) (V2HI) 0;
+}
+
+V2SI
+test4 (V2HI x)
+{
+  return (V2SI) (long long) (int) x;
+}
+
+V2SI
+test5 (V2USI x)
+{
+  return (V2SI) x;
+}
+
+void
+__attribute__ ((noinline))
+do_test (void)
+{
+  if (sizeof (short) != 2 || sizeof (int) != 4 || sizeof (long long) != 8)
+    return;
+
+  if (test1 () != 0)
+    abort ();
+
+  V2SI x = { 2, 2 };
+  if (test2 (x) != 2)
+    abort ();
+
+  union { V2SI x; int y[2]; V2USI z; long long l; } u;
+  u.x = test3 ();
+  if (u.y[0] != 0 || u.y[1] != 0)
+    abort ();
+
+  V2HI y = { 4, 4 };
+  union { V2SI x; long long y; } v;
+  v.x = test4 (y);
+  if (v.y != 0x40004)
+    abort ();
+
+  V2USI z = { 6, 6 };
+  u.x = test5 (z);
+  if (u.y[0] != 6 || u.y[1] != 6)
+    abort ();
+}
+
+int
+main (void)
+{
+  do_test ();
+  return 0;
+}