tree-ssanames.c (duplicate_ssa_name_ptr_info): New function.

        * tree-ssanames.c (duplicate_ssa_name_ptr_info): New function.
        (duplicate_ssa_name): Call duplicate_ssa_name_ptr_info.
        * tree-vect-analyze.c (vect_object_analysis): additional parm
        pass back a "struct ptr_info_def *" with the points-to info.
        (vect_analyze_data_refs): set the STMT_VINFO_PTR_INFO for the
        statement using info returned from vect_object_analysis.
        * tree-vect-transform.c (update_vuses_to_preheader): New function.
        (vect_create_data_ref_ptr): Remove updates to vars_to_rename
        for virtual uses and defs when creating a replacement vector
        reference.  Call duplicate_ssa_name_ptr_info to define points-to
        info for vector pointer replacement using STMT_VINFO_PTR_INFO.
        (vectorizable_store): copy_virtual_operands and update
        definition statements.
        (vectorizable_load): copy_virtual_operands.  Remove call to
        mark_call_clobbered_vars_to_rename for call to "const" builtin.
        * tree-vectorizer.c (vectorize_loops): Remove calls to
        rewrite_into_ssa and bitmap_clear (vars_to_rename).
        (new_stmt_vec_info): initialize STMT_VINFO_PTR_INFO for stmt.
        * tree-vectorizer.h (_stmt_vec_info): add field ptr_info and
        define macro STMT_VINFO_PTR_INFO for use in accessing.
        * tree.h add export of duplicate_ssa_name_ptr_info.
        * rs6000.c (altivec_init_builtins): Declare builtin function
        __builtin_altivec_mask_for_load to be "const".

From-SVN: r97164

1 files changed, 23 insertions, 7 deletions

diff --git a/gcc/tree-ssanames.c b/gcc/tree-ssanames.c
index 38aab0b..a89d608 100644
--- a/gcc/tree-ssanames.c
+++ b/gcc/tree-ssanames.c
@@ -279,22 +279,38 @@ duplicate_ssa_name (tree name, tree stmt)
 {
   tree new_name = make_ssa_name (SSA_NAME_VAR (name), stmt);
   struct ptr_info_def *old_ptr_info = SSA_NAME_PTR_INFO (name);
+
+  if (old_ptr_info)
+    duplicate_ssa_name_ptr_info (new_name, old_ptr_info);
+
+  return new_name;
+}
+
+
+/* Creates a duplicate of the ptr_info_def at PTR_INFO for use by
+   the ssa name NAME.  */
+
+void
+duplicate_ssa_name_ptr_info (tree name, struct ptr_info_def *ptr_info)
+{
   struct ptr_info_def *new_ptr_info;
 
-  if (!old_ptr_info)
-    return new_name;
+  gcc_assert (POINTER_TYPE_P (TREE_TYPE (name)));
+  gcc_assert (!SSA_NAME_PTR_INFO (name));
+
+  if (!ptr_info)
+    return;
 
   new_ptr_info = ggc_alloc (sizeof (struct ptr_info_def));
-  *new_ptr_info = *old_ptr_info;
+  *new_ptr_info = *ptr_info;
 
-  if (old_ptr_info->pt_vars)
+  if (ptr_info->pt_vars)
     {
       new_ptr_info->pt_vars = BITMAP_GGC_ALLOC ();
-      bitmap_copy (new_ptr_info->pt_vars, old_ptr_info->pt_vars);
+      bitmap_copy (new_ptr_info->pt_vars, ptr_info->pt_vars);
     }
 
-  SSA_NAME_PTR_INFO (new_name) = new_ptr_info;
-  return new_name;
+  SSA_NAME_PTR_INFO (name) = new_ptr_info;
 }