re PR target/43498 (No unwind info for thunks even with -fasynchronous-unwind-tables)

	PR target/43498
	* config/i386/i386.c (x86_output_mi_thunk): Call final_start_function
	at the beginning and final_end_function at the end.
	* config/s390/s390.c (s390_output_mi_thunk): Likewise.

From-SVN: r157706

gcc/ChangeLog

+2010-03-24  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/43498
+	* config/i386/i386.c (x86_output_mi_thunk): Call final_start_function
+	at the beginning and final_end_function at the end.
+	* config/s390/s390.c (s390_output_mi_thunk): Likewise.
+
 2010-03-24  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* configure.ac (i[34567]86-*-*): Handle Solaris 2/x86 TLS support

gcc/config/i386/i386.c

@@ -26191,7 +26191,7 @@ x86_can_output_mi_thunk (const_tree thunk ATTRIBUTE_UNUSED,
    *(*this + vcall_offset) should be added to THIS.  */
 
 static void
-x86_output_mi_thunk (FILE *file ATTRIBUTE_UNUSED,
+x86_output_mi_thunk (FILE *file,
 		     tree thunk ATTRIBUTE_UNUSED, HOST_WIDE_INT delta,
 		     HOST_WIDE_INT vcall_offset, tree function)
 {
@@ -26199,6 +26199,9 @@ x86_output_mi_thunk (FILE *file ATTRIBUTE_UNUSED,
   rtx this_param = x86_this_parameter (function);
   rtx this_reg, tmp;
 
+  /* Make sure unwind info is emitted for the thunk if needed.  */
+  final_start_function (emit_barrier (), file, 1);
+
   /* If VCALL_OFFSET, we'll need THIS in a register.  Might as well
      pull it in now and let DELTA benefit.  */
   if (REG_P (this_param))
@@ -26327,6 +26330,7 @@ x86_output_mi_thunk (FILE *file ATTRIBUTE_UNUSED,
 	  output_asm_insn ("jmp\t{*}%1", xops);
 	}
     }
+  final_end_function ();
 }
 
 static void

gcc/config/s390/s390.c

 /* Subroutines used for code generation on IBM S/390 and zSeries
    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
-   2007, 2008, 2009 Free Software Foundation, Inc.
+   2007, 2008, 2009, 2010 Free Software Foundation, Inc.
    Contributed by Hartmut Penner (hpenner@de.ibm.com) and
                   Ulrich Weigand (uweigand@de.ibm.com) and
                   Andreas Krebbel (Andreas.Krebbel@de.ibm.com).
@@ -9030,6 +9030,9 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
   rtx op[10];
   int nonlocal = 0;
 
+  /* Make sure unwind info is emitted for the thunk if needed.  */
+  final_start_function (emit_barrier (), file, 1);
+
   /* Operand 0 is the target function.  */
   op[0] = XEXP (DECL_RTL (function), 0);
   if (flag_pic && !SYMBOL_REF_LOCAL_P (op[0]))
@@ -9279,6 +9282,7 @@ s390_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
 	  output_asm_insn (".long\t%3", op);
 	}
     }
+  final_end_function ();
 }
 
 static bool