Re: [PATCH] PR jit/66812: Candidate fix for for the code generation issue, v1

[Dibyendu Majumdar <mobile@majumdar.org.uk>]

On 10 July 2015 at 01:45, David Malcolm <dmalcolm@redhat.com> wrote:
>> however performance degraded similar to when
>> -fno-strict-aliasing is used.
>
> Bother.  What kind of numbers are we talking about?
>

I will post some numbers tonight.

I am beginning to think that using unions was not a good idea - I
should do it the way I implement the LLVM version - i.e. use a struct
and emulate the union functionality. I think unions are just hard for
the optimizer to reason about.

Unfortunately this means a bit of rework - so I won't know if the
struct approach is better until after I have done the changes and
compared results.

Regards
Dibyendu