[cfe-commits] r77458 - /cfe/trunk/lib/CodeGen/CGCXX.cpp

[Mike Stump]

On Jul 31, 2009, at 1:35 PM, Anders Carlsson wrote:
>> What about merging leading bitfields of derived classes into the base
>> class if it has trailing padding? You're not actually supposed to do
>> that, but GCC does it (see the documentation of the -Wabi switch),  
>> and
>> if we want to be bug-for-bug compatible with GCC in this area, having
>> the offset in bits could be useful.
>>
>
> This seems to be target specific - I could not get it to work with gcc
> 4.2.1 on OS X. Also, if it violates the Itanium ABI, then I don't
> think it's a good idea to support it. (Or at least not to worry about
> it for now).

There are lots of arm special abi changes...