r194296 - Use rauw for all discardable aliases, not just linkonce_odr.

[Rafael Espíndola]

Now with the .ll files attached.

On 21 November 2013 12:50, Rafael Espíndola <rafael.espindola at gmail.com> wrote:
>> This breaks boost::locale and possibly other things. Attached is a test
>> case. Compile with -O2 -std=c++11 before and after and look for
>>     std::__1::moneypunct_byname<char, false>::~moneypunct_byname
>> in the nm -C output.
>
> I get an undefined reference in both cases.
>
> Attached are the output of "clang  -O2 -S numeric.cc  -std=c++11 -w
> -emit-llvm -Xclang -disable-llvm-optzns" with 3 versions of clang:
> Just before this patch (old.ll), this patch (new.ll) and current trunk
> (new2.ll). I have edit them just to put the entries in the same order
> and removed the # attributes.
>
> The changes I see are
>
> old -> new:
>  * Replace _ZNSt3__112_GLOBAL__N_11BD1Ev with
> _ZNSt3__112_GLOBAL__N_11BD2Ev and then with
> _ZNSt3__117moneypunct_bynameIcLb0EED2Ev. This seems valid, since the
> first pass in an internal alias and the second one is just an internal
> wrapper function
> * Replace _ZNSt3__112_GLOBAL__N_11BC1Ev with
> _ZNSt3__112_GLOBAL__N_11BC2Ev. Seems valid since it was an internal
> alias.
> * Drop the then unused internal aliases and functions.
>
> new -> new2:
>
> * Replace _ZNSt3__11AD2Ev with _ZNSt3__16locale5facetD2Ev. Seems valid
> since it was a linkonce_odr wrapper function.
>
> Cheers,
> Rafael
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