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, 48 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/slp-reduc-5.c b/gcc/testsuite/gcc.dg/vect/slp-reduc-5.c
new file mode 100644
index 000000000..40958f131
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/slp-reduc-5.c
@@ -0,0 +1,48 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 128 
+
+int c[N];
+
+/* Vectorization of reduction using loop-aware SLP.  */
+
+__attribute__ ((noinline))
+int main1 (int n, int res0, int res1)
+{
+  int i;
+  int max0 = -100, max1 = -313;
+
+  for (i = 0; i < n; i++) {
+    max1 = max1 < c[2*i+1] ? c[2*i+1] : max1;
+    max0 = max0 < c[2*i] ? c[2*i] : max0;
+  }
+
+  /* Check results:  */
+  if (max0 != res0
+      || max1 != res1)
+    abort ();
+
+  return 0;
+}
+
+int main (void)
+{
+  int i;
+
+  check_vect ();
+
+  for (i = 0; i < N; i++)
+    c[i] = (i+3) * -1;
+
+  c[0] = c[1] = -100;
+  main1 (N/2, -5, -6);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { xfail vect_no_int_max } } } */
+/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail vect_no_int_max } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */
+