$DragonFly: src/gnu/usr.bin/cc34/cc_prep/patches/optabs.c.patch,v 1.4 2005/08/27 21:03:51 joerg Exp $

===================================================================
RCS file: /home/joerg/wd/repository/dragonflybsd/src/contrib/gcc-3.4/gcc/optabs.c,v
retrieving revision 1.1
diff -u -r1.1 optabs.c
--- optabs.c	20 Jun 2004 02:14:50 -0000	1.1
+++ optabs.c	20 Dec 2004 20:48:12 -0000
@@ -678,6 +678,27 @@
   if (target)
     target = protect_from_queue (target, 1);
 
+  /* Keep the frame and offset pattern at the use of stack protection.  */
+  if (flag_propolice_protection
+      && binoptab->code == PLUS
+      && op0 == virtual_stack_vars_rtx
+      && GET_CODE(op1) == CONST_INT)
+    {
+      int icode = (int) binoptab->handlers[(int) mode].insn_code;
+      if (target)
+	temp = target;
+      else
+	temp = gen_reg_rtx (mode);
+
+      if (! (*insn_data[icode].operand[0].predicate) (temp, mode)
+	  || GET_CODE (temp) != REG)
+	temp = gen_reg_rtx (mode);
+
+      emit_insn (gen_rtx_SET (VOIDmode, temp,
+			      gen_rtx_PLUS (GET_MODE (op0), op0, op1)));
+      return temp;
+    }
+
   if (flag_force_mem)
     {
       /* Load duplicate non-volatile operands once.  */