Re: [Qemu-devel] [PATCH 2/5] Add a PowerPC branch detector

[Alexander Graf]

Thiemo Seufer wrote:
> Johannes Schindelin wrote:
>   
>> Hi,
>>
>> On Thu, 17 Jan 2008, Thiemo Seufer wrote:
>>
>>     
>>> Alexander Graf wrote:
>>> [snip]
>>>       
>>>>> Is check_ops.sh not enough for debugging micro-ops?
>>>>>
>>>>>           
>>>> Basically it should be. PowerPC branching can be (regex) b..rl. Honestly
>>>> I did not know about this script though and as it was not in the
>>>> makefile, it did not tell me that something wrong was going on. This
>>>> check costs near no time and has to be passed in order to build
>>>> successfully.
>>>>
>>>> So either check_ops should be fixed (not only brl) and put into the
>>>> Makefile.target or a check like this is good to have.
>>>>         
>>> Fixing check_ops is IMO preferable, OTOH I hope the whole problem goes
>>> away with the new code generator which is in the works.
>>>       
>> The code generated by that new code generator is substantially slower than 
>> what we have right now, so I am not so enthusiastic.
>>     
>
> I meant not qops but something Fabrice is working on. Which apparently has
> about the same speed.
>
>   

Either way I wouldn't mind having a working gcc4 version for the time
being, including checks that it doesn't break too easily again.

Alex