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, 75 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c b/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c
new file mode 100644
index 000000000..9606d300c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/no-scevccp-outer-7.c
@@ -0,0 +1,75 @@
+/* { dg-require-effective-target vect_int } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 16
+
+unsigned short in[N];
+unsigned short coef[N];
+unsigned short a[N];
+
+__attribute__ ((noinline)) unsigned int
+foo (short scale){
+  int i;
+  unsigned short j;
+  unsigned int sum = 0;
+  unsigned short sum_j;
+
+  for (i = 0; i < N; i++) {
+    sum_j = 0;
+    for (j = 0; j < N; j++) {
+      sum_j += j;
+    }
+    a[i] = sum_j;
+    sum += ((unsigned int) in[i] * (unsigned int) coef[i]) >> scale;
+  }
+  return sum;
+}
+
+unsigned short
+bar (void)
+{
+  unsigned short j;
+  unsigned short sum_j;
+
+  sum_j = 0;
+  for (j = 0; j < N; j++) {
+    sum_j += j;
+  }
+
+  return sum_j;
+}
+
+int main (void)
+{
+  int i;
+  unsigned short j, sum_j;
+  unsigned int sum = 0;
+  unsigned int res;
+
+  check_vect ();
+
+  for (i=0; i<N; i++){
+    in[i] = 2*i;
+    coef[i] = i;
+  }
+ 
+  res = foo (2);
+
+  /* check results:  */
+  for (i=0; i<N; i++)
+    {
+      if (a[i] != bar ())
+	abort ();
+      sum += ((unsigned int) in[i] * (unsigned int) coef[i]) >> 2;
+    }
+  if (res != sum)
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED." 1 "vect" { target vect_widen_mult_hi_to_si } } } */
+/* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */