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, 94 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/no-vfa-vect-43.c b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-43.c
new file mode 100644
index 000000000..16a01d1a3
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/no-vfa-vect-43.c
@@ -0,0 +1,94 @@
+/* { dg-require-effective-target vect_float } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 256
+
+__attribute__ ((noinline))
+void bar (float *pa, float *pb, float *pc) 
+{
+  int i;
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (pa[i] != (pb[i] * pc[i]))
+	abort ();
+    }
+
+  return;
+}
+
+
+__attribute__ ((noinline)) int
+main1 (float *pa, float *pb, float *pc)
+{
+  int i;
+  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+
+  for (i = 0; i < N; i++)
+    {
+      b[i] = pb[i];
+      c[i] = pc[i];
+    }
+
+  /* Vectorizable: pa may not alias pb and/or pc, even though their
+     addresses escape.  &pa would need to escape to point to escaped memory.  */
+  for (i = 0; i < N; i++)
+    {
+      pa[i] = b[i] * c[i];
+    }
+
+  bar (pa,b,c);
+
+  return 0;
+}
+
+__attribute__ ((noinline)) int
+main2 (float *pa, float *pb, float *pc)
+{
+  int i;
+  float b[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float c[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+
+  for (i = 0; i < N; i++)
+    {
+      b[i] = pb[i];
+      c[i] = pc[i];
+    }
+
+  /* Vectorizable: pb and pc addresses do not escape.  */
+  for (i = 0; i < N; i++)
+    {
+      pa[i] = b[i] * c[i];
+    }   
+  
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      if (pa[i] != (b[i] * c[i]))
+        abort ();
+    }
+  
+  return 0;
+}
+
+int main (void)
+{
+  int i;
+  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
+  float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
+  float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};
+
+  check_vect ();
+
+  main1 (a,b,c);
+  main2 (a,b,c);
+  return 0;
+}
+
+/* { dg-final { scan-tree-dump-times "vectorized 2 loops" 2 "vect" } } */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 6 "vect" { target vect_no_align } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */