RFA (middle-end): Fix PR other/44034

[IainS]

On 29 Jun 2010, at 20:22, Joern Rennecke wrote:

> Quoting "H.J. Lu" <hjl.tools@gmail.com>:
>
> > This patch caused:
>>
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44719
>
> I have checked in the attached patch as obvious.

it also  caused a bootstrap fail on powerpc-apple-darwin9.
I am bootstrapping with the following - but you might like to see if  
any other targets have a similar issue:

Index: gcc/config/darwin.c
===================================================================
--- gcc/config/darwin.c (revision 161563)
+++ gcc/config/darwin.c (working copy)
@@ -1864,7 +1864,7 @@ darwin_override_options (void)

    /* Disable -freorder-blocks-and-partition for  
darwin_emit_unwind_label.  */
    if (flag_reorder_blocks_and_partition
-      && (targetm.asm_out.unwind_label == darwin_emit_unwind_label))
+      && (targetm.asm_out.emit_unwind_label ==  
darwin_emit_unwind_label))
      {
        inform (input_location,
                "-freorder-blocks-and-partition does not work with  
exceptions "