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, 45 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/vect-107.c b/gcc/testsuite/gcc.dg/vect/vect-107.c
new file mode 100644
index 000000000..201d4ab4e
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-107.c
@@ -0,0 +1,45 @@
+/* { dg-require-effective-target vect_float } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+
+float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
+float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
+float d[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30};
+
+__attribute__ ((noinline)) int
+main1 (void)
+{
+  int i;
+  float a[N];
+
+  /* Strided access. Vectorizable on platforms that support load of strided 
+     accesses (extract of even/odd vector elements).  */
+  for (i = 0; i < N/2; i++)
+    {
+      a[i] = b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i];
+      d[i] = b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i];
+    }
+
+  /* Check results.  */
+  for (i = 0; i < N/2; i++)
+    {
+      if (a[i] != b[2*i+1] * c[2*i+1] - b[2*i] * c[2*i]
+	  || d[i] != b[2*i] * c[2*i+1] + b[2*i+1] * c[2*i])
+	abort();
+    }
+
+  return 0;
+}
+
+int main (void)
+{
+  check_vect ();
+  return main1 ();
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_extract_even_odd_wide } } } */
+/* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" { xfail vect_extract_even_odd_wide } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */