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

[IainS]

On 29 Jun 2010, at 21:27, IainS wrote:

>
> 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 "
>

this is actually needed on *-*-darwin*
I've checked it on {i686,powerpc}-apple-darwin9 and x86_64-apple- 
darwin10 - although the latter does not complete bootstrap for other  
reasons, it does pass the stage that relates to this patch).

IMO, this would qualify as "obvious", may I apply it to trunk?

Iain