rl78.c (rl78_expand_prologue): Always select register bank 0 at the start of an interrupt handler.

	* config/rl78/rl78.c (rl78_expand_prologue): Always select
	register bank 0 at the start of an interrupt handler.

From-SVN: r195019

gcc/ChangeLog

+2013-01-08  Nick Clifton  <nickc@redhat.com>
+
+	* config/rl78/rl78.c (rl78_expand_prologue): Always select
+	register bank 0 at the start of an interrupt handler.
+
 2013-01-08  James Greenhalgh  <james.greenhalgh@arm.com>
 
 	* config/aarch64/aarch64-simd.md
@@ -42,7 +47,7 @@
 
 	* config/i386/openbsdelf.h (LIBGCC2_HAS_TF_MODE, LIBGCC2_TF_CEXT,
 	TF_SIZE): Define.
-			
+
 2013-01-07  Steve Ellcey  <sellcey@mips.com>
 
 	PR target/42661

gcc/config/rl78/rl78.c

@@ -839,6 +839,9 @@ rl78_expand_prologue (void)
   if (flag_stack_usage_info)
     current_function_static_stack_size = cfun->machine->framesize;
 
+  if (is_interrupt_func (cfun->decl))
+    emit_insn (gen_sel_rb (GEN_INT (0)));
+
   for (i = 0; i < 16; i++)
     if (cfun->machine->need_to_push [i])
       {