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
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files in the upstream repository.

1 files changed, 120 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.dg/vect/section-anchors-vect-69.c b/gcc/testsuite/gcc.dg/vect/section-anchors-vect-69.c
new file mode 100644
index 000000000..7b5ce7348
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/vect/section-anchors-vect-69.c
@@ -0,0 +1,120 @@
+/* { dg-require-effective-target section_anchors } */
+
+#include <stdarg.h>
+#include "tree-vect.h"
+
+#define N 32
+
+struct s{
+  int m;
+  int n[N][N][N];
+};
+
+struct s2{
+  int m;
+  int n[N-1][N-1][N-1];
+};
+
+struct test1{
+  struct s a; /* array a.n is unaligned */
+  int b;
+  int c;
+  struct s e; /* array e.n is aligned */
+};
+
+struct test2{
+  struct s2 a; /* array a.n is unaligned */
+  int b;
+  int c;
+  struct s2 e; /* array e.n is aligned */
+};
+
+
+struct test1 tmp1[4];
+struct test2 tmp2[4];
+
+int main1 ()
+{  
+  int i,j;
+
+  /* 1. unaligned */
+  for (i = 0; i < N; i++)
+    {
+      tmp1[2].a.n[1][2][i] = 5;
+    }
+
+  /* check results:  */
+  for (i = 0; i <N; i++)
+    {
+      if (tmp1[2].a.n[1][2][i] != 5)
+        abort ();
+    }
+
+  /* 2. aligned */
+  for (i = 3; i < N-1; i++)
+    {
+      tmp1[2].a.n[1][2][i] = 6;
+    }
+
+  /* check results:  */
+  for (i = 3; i < N-1; i++)
+    {
+      if (tmp1[2].a.n[1][2][i] != 6)
+        abort ();
+    }
+
+  /* 3. aligned */
+  for (i = 0; i < N; i++)
+    {
+      for (j = 0; j < N; j++)
+	{
+          tmp1[2].e.n[1][i][j] = 8;
+	}
+    }
+
+  /* check results:  */
+  for (i = 0; i < N; i++)
+    {
+      for (j = 0; j < N; j++)
+	{
+          if (tmp1[2].e.n[1][i][j] != 8)
+	    abort ();
+	}
+    }
+
+  /* 4. unaligned */
+  for (i = 0; i < N-4; i++)
+    {
+      for (j = 0; j < N-4; j++)
+	{
+          tmp2[2].e.n[1][i][j] = 8;
+	}
+    }
+
+  /* check results:  */
+  for (i = 0; i < N-4; i++)
+    {
+      for (j = 0; j < N-4; j++)
+	{
+          if (tmp2[2].e.n[1][i][j] != 8)
+	    abort ();
+	}
+    }
+
+  return 0;
+}
+
+int main (void)
+{ 
+  check_vect ();
+  
+  return main1 ();
+} 
+
+/* { dg-final { scan-tree-dump-times "vectorized 4 loops" 1 "vect" { target vect_int } } } */
+/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */
+/* Alignment forced using versioning until the pass that increases alignment
+  is extended to handle structs.  */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 4 "vect" { target {vect_int && vector_alignment_reachable } } } } */
+/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 4 "vect" { target {vect_int && {! vector_alignment_reachable} } } } } */
+/* { dg-final { cleanup-tree-dump "vect" } } */