[backport gcc-4.8/trunk r189410 <mikpe@it.uu.se>]

gcc/

2012-07-10  Andreas Schwab  <schwab@linux-m68k.org>

	PR bootstrap/53913
	* config/m68k/m68k.c (m68k_epilogue_uses): New.
	* config/m68k/m68k.h (EPILOGUE_USES): Use it.
	* config/m68k/m68k-protos.h (m68k_epilogue_uses): Add prototype.

--- gcc-4.8-20120708/gcc/config/m68k/m68k-protos.h.~1~	2012-05-07 14:29:05.000000000 +0200
+++ gcc-4.8-20120708/gcc/config/m68k/m68k-protos.h	2012-07-10 14:15:26.000000000 +0200
@@ -1,5 +1,5 @@
 /* Definitions of target machine for GNU compiler.  Sun 68000/68020 version.
-   Copyright (C) 2000, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   Copyright (C) 2000, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012
    Free Software Foundation, Inc.
 
 This file is part of GCC.
@@ -68,6 +68,7 @@ extern int emit_move_sequence (rtx *, en
 extern bool m68k_movem_pattern_p (rtx, rtx, HOST_WIDE_INT, bool);
 extern const char *m68k_output_movem (rtx *, rtx, HOST_WIDE_INT, bool);
 extern void m68k_final_prescan_insn (rtx, rtx *, int);
+extern bool m68k_epilogue_uses (int);
 
 /* Functions from m68k.c used in constraints.md.  */
 extern rtx m68k_unwrap_symbol (rtx, bool);
--- gcc-4.8-20120708/gcc/config/m68k/m68k.c.~1~	2012-07-03 11:46:01.000000000 +0200
+++ gcc-4.8-20120708/gcc/config/m68k/m68k.c	2012-07-10 14:15:26.000000000 +0200
@@ -6506,4 +6506,14 @@ m68k_init_sync_libfuncs (void)
   init_sync_libfuncs (UNITS_PER_WORD);
 }
 
+/* Implements EPILOGUE_USES.  All registers are live on exit from an
+   interrupt routine.  */
+bool
+m68k_epilogue_uses (int regno ATTRIBUTE_UNUSED)
+{
+  return (reload_completed
+	  && (m68k_get_function_kind (current_function_decl)
+	      == m68k_fk_interrupt_handler));
+}
+
 #include "gt-m68k.h"
--- gcc-4.8-20120708/gcc/config/m68k/m68k.h.~1~	2012-05-21 20:43:27.000000000 +0200
+++ gcc-4.8-20120708/gcc/config/m68k/m68k.h	2012-07-10 14:15:26.000000000 +0200
@@ -802,11 +802,7 @@ do { if (cc_prev_status.flags & CC_IN_68
 /* Before the prologue, the top of the frame is at 4(%sp).  */
 #define INCOMING_FRAME_SP_OFFSET 4
 
-/* All registers are live on exit from an interrupt routine.  */
-#define EPILOGUE_USES(REGNO)					\
-  (reload_completed						\
-   && (m68k_get_function_kind (current_function_decl)	\
-       == m68k_fk_interrupt_handler))
+#define EPILOGUE_USES(REGNO) m68k_epilogue_uses (REGNO)
 
 /* Describe how we implement __builtin_eh_return.  */
 #define EH_RETURN_DATA_REGNO(N) \