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, 134 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/slp-22.c b/gcc/testsuite/gcc.dg/vect/slp-22.c
new file mode 100644
index 000000000..3f6692816
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/slp-22.c
@@ -0,0 +1,134 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 128 
+
+int
+main1 (unsigned short a0, unsigned short a1, unsigned short a2, 
+       unsigned short a3, unsigned short a4, unsigned short a5,
+       unsigned short a6, unsigned short a7, unsigned short a8)
+{
+  int i;
+  unsigned short out[N*8], out2[N*8], out3[N*8], b0, b1, b2, b3, b4, b5, b6, b7, b8;
+
+  for (i = 0; i < N; i++)
+    {
+      b0 = a0 + 8;
+      b1 = a1 + 7;
+      b2 = a2 + 6;
+      b3 = a3 + 5;
+      b4 = a4 + 4;
+      b5 = a5 + 3;
+
+      out[i*4] = b0;
+      out[i*4 + 1] = b1;
+      out[i*4 + 2] = b2;
+      out[i*4 + 3] = b3;
+
+      out2[i*4] = b0;
+      out2[i*4 + 1] = b1;
+      out2[i*4 + 2] = b4;
+      out2[i*4 + 3] = b5;
+
+      out3[i*4] = b2;
+      out3[i*4 + 1] = b1;
+      out3[i*4 + 2] = b4;
+      out3[i*4 + 3] = b5;
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (out[i*4] != b0 
+         || out[i*4 + 1] != b1
+         || out[i*4 + 2] != b2
+         || out[i*4 + 3] != b3)
+	abort ();
+
+    
+      if (out2[i*4] != b0
+         || out2[i*4 + 1] != b1
+         || out2[i*4 + 2] != b4
+         || out2[i*4 + 3] != b5)
+        abort ();
+   
+      if (out3[i*4] != b2  
+         || out3[i*4 + 1] != b1
+         || out3[i*4 + 2] != b4
+         || out3[i*4 + 3] != b5)
+        abort ();
+    }
+
+  for (i = 0; i < N; i++)
+    {
+      b0 = a0 + 8;
+      b1 = a1 + 7;
+      b2 = a2 + 6;
+      b3 = a3 + 5;
+      b4 = a4 + 4;
+      b5 = a5 + 3;
+      b6 = a6 + 2;
+      b7 = a7 + 1;
+      b8 = a8 + 9;
+
+      out[i*4] = b0;
+      out[i*4 + 1] = b1;
+      out[i*4 + 2] = b2;
+      out[i*4 + 3] = b3;
+
+      out2[i*8] = b0;
+      out2[i*8 + 1] = b1;
+      out2[i*8 + 2] = b4;
+      out2[i*8 + 3] = b5;
+      out2[i*8 + 4] = b6;
+      out2[i*8 + 5] = b2;
+      out2[i*8 + 6] = b7;
+      out2[i*8 + 7] = b8;
+
+      out3[2*i + 1] = a0;
+      out3[2*i] = b8; 
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (out[i*4] != b0 
+         || out[i*4 + 1] != b1
+         || out[i*4 + 2] != b2
+         || out[i*4 + 3] != b3)
+        abort ();
+
+      if (out2[i*8] != b0
+         || out2[i*8 + 1] != b1
+         || out2[i*8 + 2] != b4
+         || out2[i*8 + 3] != b5
+         || out2[i*8 + 4] != b6
+         || out2[i*8 + 5] != b2
+         || out2[i*8 + 6] != b7
+         || out2[i*8 + 7] != b8)
+        abort ();
+
+      if (out3[2*i] != b8
+          || out3[2*i+1] != a0)
+        abort();
+    }
+
+
+  return 0;
+}
+
+int main (void)
+{
+  check_vect ();
+
+  main1 (8,7,6,5,4,3,2,1,0);
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect"  } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 6 "vect"  } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+