re PR target/66569 ([CHKP] internal compiler error: in assign_by_spills)

gcc/

	PR target/66569
	* function.c (assign_bounds): Add arguments assign_regs,
	assign_special, assign_bt.
	(assign_parms): For vararg functions handle bounds in BT
	and special slots after incoming vararg bounds.

gcc/testsuite/

	PR target/66569
	* gcc.target/i386/mpx/chkp-vararg.c: New test.

From-SVN: r224602

gcc/ChangeLog

 2015-06-18  Ilya Enkovich  <enkovich.gnu@gmail.com>
 
+	PR target/66569
+	* function.c (assign_bounds): Add arguments assign_regs,
+	assign_special, assign_bt.
+	(assign_parms): For vararg functions handle bounds in BT
+	and special slots after incoming vararg bounds.
+
+2015-06-18  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
 	PR middle-end/66568
 	* cfgexpand.c (expand_return): Handle missing bounds.
 	(expand_gimple_stmt_1): Likewise.

gcc/function.c

@@ -3489,9 +3489,11 @@ assign_parm_load_bounds (struct assign_parm_data_one *data,
 
 static void
 assign_bounds (vec<bounds_parm_data> &bndargs,
-	       struct assign_parm_data_all &all)
+	       struct assign_parm_data_all &all,
+	       bool assign_regs, bool assign_special,
+	       bool assign_bt)
 {
-  unsigned i, pass, handled = 0;
+  unsigned i, pass;
   bounds_parm_data *pbdata;
 
   if (!bndargs.exists ())
@@ -3505,17 +3507,20 @@ assign_bounds (vec<bounds_parm_data> &bndargs,
       {
 	/* Pass 0 => regs only.  */
 	if (pass == 0
-	    && (!pbdata->parm_data.entry_parm
-		|| GET_CODE (pbdata->parm_data.entry_parm) != REG))
+	    && (!assign_regs
+		||(!pbdata->parm_data.entry_parm
+		   || GET_CODE (pbdata->parm_data.entry_parm) != REG)))
 	  continue;
 	/* Pass 1 => slots only.  */
 	else if (pass == 1
-		 && (!pbdata->parm_data.entry_parm
-		     || GET_CODE (pbdata->parm_data.entry_parm) == REG))
+		 && (!assign_special
+		     || (!pbdata->parm_data.entry_parm
+			 || GET_CODE (pbdata->parm_data.entry_parm) == REG)))
 	  continue;
 	/* Pass 2 => BT only.  */
 	else if (pass == 2
-		 && pbdata->parm_data.entry_parm)
+		 && (!assign_bt
+		     || pbdata->parm_data.entry_parm))
 	  continue;
 
 	if (!pbdata->parm_data.entry_parm
@@ -3536,14 +3541,7 @@ assign_bounds (vec<bounds_parm_data> &bndargs,
 	else
 	  assign_parm_setup_stack (&all, pbdata->bounds_parm,
 				   &pbdata->parm_data);
-
-	/* Count handled bounds to make sure we miss nothing.  */
-	handled++;
       }
-
-  gcc_assert (handled == bndargs.length ());
-
-  bndargs.release ();
 }
 
 /* Assign RTL expressions to the function's parameters.  This may involve
@@ -3668,12 +3666,14 @@ assign_parms (tree fndecl)
 	      /* We expect this is the last parm.  Otherwise it is wrong
 		 to assign bounds right now.  */
 	      gcc_assert (i == (fnargs.length () - 1));
-	      assign_bounds (bndargs, all);
+	      assign_bounds (bndargs, all, true, false, false);
 	      targetm.calls.setup_incoming_vararg_bounds (all.args_so_far,
 							  data.promoted_mode,
 							  data.passed_type,
 							  &pretend_bytes,
 							  false);
+	      assign_bounds (bndargs, all, false, true, true);
+	      bndargs.release ();
 	    }
 	}
 
@@ -3685,7 +3685,8 @@ assign_parms (tree fndecl)
 	bound_no++;
     }
 
-  assign_bounds (bndargs, all);
+  assign_bounds (bndargs, all, true, true, true);
+  bndargs.release ();
 
   if (targetm.calls.split_complex_arg)
     assign_parms_unsplit_complex (&all, fnargs);

gcc/testsuite/ChangeLog

 2015-06-18  Ilya Enkovich  <enkovich.gnu@gmail.com>
 
+	PR target/66569
+	* gcc.target/i386/mpx/chkp-vararg.c: New test.
+
+2015-06-18  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
 	PR middle-end/66568
 	* gcc.target/i386/mpx/pr66568.c: New test.
 

gcc/testsuite/gcc.target/i386/mpx/pr66569.c

+/* { dg-do compile } */
+/* { dg-options "-fcheck-pointer-bounds -mmpx" } */
+
+struct s1 {
+  int *p;
+  int i;
+};
+
+struct s2 {
+  struct s1 s;
+  int i;
+};
+
+int test (struct s2 s, ...) { }