2010-05-02 Richard Guenther <rguenther@suse.de>

[pf3gnuchains/gcc-fork.git] / gcc / tree-tailcall.c

diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c
index ca3dffa..ec6d2fd 100644 (file)
--- a/gcc/tree-tailcall.c
+++ b/gcc/tree-tailcall.c
@@ -458,8 +458,10 @@ find_tail_calls (basic_block bb, struct tailcall **ret)
      to local variables.  */
   FOR_EACH_REFERENCED_VAR (var, rvi)
     {
-      if (!is_global_var (var)
-         && ref_maybe_used_by_stmt_p (call, var))
+      if (TREE_CODE (var) != PARM_DECL
+         && auto_var_in_fn_p (var, cfun->decl)
+         && (ref_maybe_used_by_stmt_p (call, var)
+             || call_may_clobber_ref_p (call, var)))
        return;
     }
 
@@ -575,13 +577,10 @@ adjust_return_value_with_ops (enum tree_code code, const char *label,
 {
 
   tree ret_type = TREE_TYPE (DECL_RESULT (current_function_decl));
-  tree tmp = create_tmp_var (ret_type, label);
+  tree tmp = create_tmp_reg (ret_type, label);
   gimple stmt;
   tree result;
 
-  if (TREE_CODE (ret_type) == COMPLEX_TYPE
-      || TREE_CODE (ret_type) == VECTOR_TYPE)
-    DECL_GIMPLE_REG_P (tmp) = 1;
   add_referenced_var (tmp);
 
   if (types_compatible_p (TREE_TYPE (acc), TREE_TYPE (op1)))
@@ -908,12 +907,9 @@ static tree
 create_tailcall_accumulator (const char *label, basic_block bb, tree init)
 {
   tree ret_type = TREE_TYPE (DECL_RESULT (current_function_decl));
-  tree tmp = create_tmp_var (ret_type, label);
+  tree tmp = create_tmp_reg (ret_type, label);
   gimple phi;
 
-  if (TREE_CODE (ret_type) == COMPLEX_TYPE
-      || TREE_CODE (ret_type) == VECTOR_TYPE)
-    DECL_GIMPLE_REG_P (tmp) = 1;
   add_referenced_var (tmp);
   phi = create_phi_node (tmp, bb);
   /* RET_TYPE can be a float when -ffast-maths is enabled.  */