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, 78 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/vect-outer-fir-lb.c b/gcc/testsuite/gcc.dg/vect/vect-outer-fir-lb.c
new file mode 100644
index 000000000..3c1a362c0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/vect-outer-fir-lb.c
@@ -0,0 +1,78 @@
+/* { dg-require-effective-target vect_float } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 40
+#define M 64
+float in[N+M];
+float coeff[M];
+float out[N];
+float fir_out[N];
+
+/* Vectorized.  Fixed misaligment in the inner-loop.  */
+__attribute__ ((noinline))
+void foo (){
+ int i,j,k;
+ float diff;
+
+ for (i = 0; i < N; i++) {
+  out[i] = 0;
+ }
+
+ for (k = 0; k < 4; k++) {
+  for (i = 0; i < N; i++) {
+    diff = 0;
+    j = k;
+
+    do {
+      diff += in[j+i]*coeff[j];
+      j+=4;
+    } while (j < M);
+
+    out[i] += diff;
+  }
+ }
+
+}
+
+/* Vectorized.  Changing misalignment in the inner-loop.  */
+__attribute__ ((noinline))
+void fir (){
+  int i,j,k;
+  float diff;
+
+  for (i = 0; i < N; i++) {
+    diff = 0;
+    for (j = 0; j < M; j++) {
+      diff += in[j+i]*coeff[j];
+    }
+    fir_out[i] = diff;
+  }
+}
+
+
+int main (void)
+{
+  check_vect ();
+  int i, j;
+  float diff;
+
+  for (i = 0; i < M; i++)
+    coeff[i] = i;
+  for (i = 0; i < N+M; i++)
+    in[i] = i;
+
+  foo ();
+  fir ();
+
+  for (i = 0; i < N; i++) {
+    if (out[i] != fir_out[i])
+      abort ();
+  }
+
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail vect_no_align } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */