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, 135 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/pr48616.c b/gcc/testsuite/gcc.dg/pr48616.c
new file mode 100644
index 000000000..6a908d6e7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr48616.c
@@ -0,0 +1,135 @@
+/* PR tree-optimization/48616 */
+/* { dg-do run } */
+/* { dg-options "-O2 -ftree-vectorize" } */
+/* { dg-options "-O2 -ftree-vectorize -fno-common" { target hppa*-*-hpux* } } */
+
+extern void abort (void);
+int a[4] __attribute__((aligned (32)));
+int b[4] __attribute__((aligned (32)));
+int c[4] __attribute__((aligned (32)));
+int d[4] __attribute__((aligned (32)));
+int e[4] __attribute__((aligned (32)));
+
+__attribute__((noinline, noclone))
+int
+foo (int x)
+{
+  asm ("" : "+r" (x));
+  return x;
+}
+
+__attribute__((noinline, noclone))
+void
+fn1 (int i)
+{
+  a[0] = b[0] << c[0];
+  a[1] = b[1] << c[1];
+  a[2] = b[2] << c[2];
+  a[3] = b[3] << c[3];
+  if (i)
+    {
+      d[0] = e[0] >> c[0];
+      d[1] = e[1] >> c[1];
+      d[2] = e[2] >> c[2];
+      d[3] = e[3] >> c[3];
+    }
+}
+
+__attribute__((noinline, noclone))
+void
+fn2 (int i)
+{
+  a[0] = b[0] << 1;
+  a[1] = b[1] << 2;
+  a[2] = b[2] << 3;
+  a[3] = b[3] << 4;
+  if (i)
+    {
+      d[0] = e[0] >> 1;
+      d[1] = e[1] >> 2;
+      d[2] = e[2] >> 3;
+      d[3] = e[3] >> 4;
+    }
+}
+
+__attribute__((noinline, noclone))
+void
+fn3 (int i, int j)
+{
+  int x = foo (j);
+  a[0] = b[0] << x;
+  a[1] = b[1] << x;
+  a[2] = b[2] << x;
+  a[3] = b[3] << x;
+  if (i)
+    {
+      d[0] = e[0] >> x;
+      d[1] = e[1] >> x;
+      d[2] = e[2] >> x;
+      d[3] = e[3] >> x;
+    }
+}
+
+__attribute__((noinline, noclone))
+void
+fn4 (int i)
+{
+  a[0] = b[0] << 1;
+  a[1] = b[1] << 1;
+  a[2] = b[2] << 1;
+  a[3] = b[3] << 1;
+  if (i)
+    {
+      d[0] = e[0] >> 1;
+      d[1] = e[1] >> 1;
+      d[2] = e[2] >> 1;
+      d[3] = e[3] >> 1;
+    }
+}
+
+int
+main ()
+{
+  int i;
+  int *t;
+  for (i = 0; i < 4; i++)
+    {
+      b[i] = 32;
+      c[i] = i + 1;
+      e[i] = 32;
+    }
+  asm volatile ("" : : "r" (b) : "memory");
+  asm volatile ("" : : "r" (c) : "memory");
+  asm volatile ("" : "=r" (t) : "0" (d) : "memory");
+  fn1 (t != 0);
+  for (i = 0; i < 4; i++)
+    {
+      if (a[i] != (32 << (i + 1)) || d[i] != (32 >> (i + 1)))
+	abort ();
+      a[i] = 0;
+      d[i] = 0;
+    }
+  fn2 (t != 0);
+  for (i = 0; i < 4; i++)
+    {
+      if (a[i] != (32 << (i + 1)) || d[i] != (32 >> (i + 1)))
+	abort ();
+      a[i] = 0;
+      d[i] = 0;
+    }
+  fn3 (t != 0, t != 0);
+  for (i = 0; i < 4; i++)
+    {
+      if (a[i] != (32 << 1) || d[i] != (32 >> 1))
+	abort ();
+      a[i] = 0;
+      d[i] = 0;
+    }
+  fn4 (t != 0);
+  for (i = 0; i < 4; i++)
+    {
+      if (a[i] != (32 << 1) || d[i] != (32 >> 1))
+	abort ();
+    }
+  return 0;
+}