1 files changed, 129 insertions, 0 deletions
diff --git a/gcc/cp/expr.c b/gcc/cp/expr.c
new file mode 100644
index 0000000..4039002
--- /dev/null
+++ b/gcc/cp/expr.c
@@ -0,0 +1,129 @@
+/* Convert language-specific tree expression to rtl instructions,
+   for GNU compiler.
+   Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+   2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING.  If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA.  */
+
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "rtl.h"
+#include "tree.h"
+#include "flags.h"
+#include "expr.h"
+#include "cp-tree.h"
+#include "toplev.h"
+#include "except.h"
+#include "tm_p.h"
+
+/* Hook used by output_constant to expand language-specific
+   constants.  */
+
+tree
+cplus_expand_constant (tree cst)
+{
+  switch (TREE_CODE (cst))
+    {
+    case PTRMEM_CST:
+      {
+	tree type = TREE_TYPE (cst);
+	tree member;
+
+	/* Find the member.  */
+	member = PTRMEM_CST_MEMBER (cst);
+
+	if (TREE_CODE (member) == FIELD_DECL)
+	  {
+	    /* Find the offset for the field.  */
+	    cst = byte_position (member);
+	    while (!same_type_p (DECL_CONTEXT (member),
+				 TYPE_PTRMEM_CLASS_TYPE (type)))
+	      {
+		/* The MEMBER must have been nestled within an
+		   anonymous aggregate contained in TYPE.  Find the
+		   anonymous aggregate.  */
+		member = lookup_anon_field (TYPE_PTRMEM_CLASS_TYPE (type),
+					    DECL_CONTEXT (member));
+		cst = size_binop (PLUS_EXPR, cst, byte_position (member));
+	      }
+	    cst = fold (build_nop (type, cst));
+	  }
+	else
+	  {
+	    tree delta;
+	    tree pfn;
+
+	    expand_ptrmemfunc_cst (cst, &delta, &pfn);
+	    cst = build_ptrmemfunc1 (type, delta, pfn);
+	  }
+      }
+      break;
+
+    default:
+      /* There's nothing to do.  */
+      break;
+    }
+
+  return cst;
+}
+
+/* Hook used by expand_expr to expand language-specific tree codes.  */
+/* ??? The only thing that should be here are things needed to expand
+   constant initializers; everything else should be handled by the
+   gimplification routines.  Are EMPTY_CLASS_EXPR or BASELINK needed?  */
+
+rtx
+cxx_expand_expr (tree exp, rtx target, enum machine_mode tmode, int modifier,
+		 rtx *alt_rtl)
+{
+  tree type = TREE_TYPE (exp);
+  enum machine_mode mode = TYPE_MODE (type);
+  enum tree_code code = TREE_CODE (exp);
+
+  /* No sense saving up arithmetic to be done
+     if it's all in the wrong mode to form part of an address.
+     And force_operand won't know whether to sign-extend or zero-extend.  */
+
+  if (mode != Pmode && modifier == EXPAND_SUM)
+    modifier = EXPAND_NORMAL;
+
+  switch (code)
+    {
+    case PTRMEM_CST:
+      return expand_expr (cplus_expand_constant (exp),
+			  target, tmode, modifier);
+
+    case OFFSET_REF:
+      /* Offset refs should not make it through to here.  */
+      gcc_unreachable ();
+
+    case EMPTY_CLASS_EXPR:
+      /* We don't need to generate any code for an empty class.  */
+      return const0_rtx;
+
+    case BASELINK:
+      return expand_expr (BASELINK_FUNCTIONS (exp), target, tmode,
+			  modifier);
+
+    default:
+      return c_expand_expr (exp, target, tmode, modifier, alt_rtl);
+    }
+}