[llvm-dev] error:Ran out of lanemask bits to represent subregister

[hameeza ahmed via llvm-dev]

Thank you so much

On Fri, Jul 14, 2017 at 11:32 PM, Craig Topper <craig.topper at gmail.com>
wrote:

> I've commited r308042 to make it a little easier to change the underlying
> type in the LaneBitmask class. With that change you might not need to touch
> CodeGenRegisters.cpp now. But I can't promise anything.
>
> ~Craig
>
> On Fri, Jul 14, 2017 at 10:36 AM, hameeza ahmed <hahmed2305 at gmail.com>
> wrote:
>
>> The code file is attached here.
>>
>> Kindly check it.
>>
>> On Fri, Jul 14, 2017 at 10:29 PM, Craig Topper <craig.topper at gmail.com>
>> wrote:
>>
>>> Do your 32768 registers also have sub registers?
>>>
>>> I can't tell you exactly what to change. I'm not familiar with the code.
>>> I would just be running grep or something.
>>>
>>> ~Craig
>>>
>>> On Fri, Jul 14, 2017 at 10:23 AM, hameeza ahmed <hahmed2305 at gmail.com>
>>> wrote:
>>>
>>>> Thank you so much. I think there is no issue with my definitions since
>>>> i have to use larger registers i.e 65536 bit register made from 2 32768
>>>> registers.
>>>> I have seen your mentioned code files. But it looks difficult what to
>>>> change.
>>>> Could you please specify exactly where to make changes??
>>>>
>>>> Thank You
>>>>
>>>> On Fri, Jul 14, 2017 at 10:16 PM, Craig Topper <craig.topper at gmail.com>
>>>> wrote:
>>>>
>>>>> This error indicates that its trying to create a lane mask larger than
>>>>> 32 bits. Without seeing all of your subregister definitions I can't tell if
>>>>> that's correct of if there's something wrong with your register definitions.
>>>>>
>>>>> If it is correct then you need to change all the associated LaneMask
>>>>> code in CodeGenRegisters.cpp, include/llvm/MC/LaneBitMask.h and probably
>>>>> elsewhere to use a larger type than "unsigned" or "uint32_t".
>>>>>
>>>>> ~Craig
>>>>>
>>>>> On Fri, Jul 14, 2017 at 10:09 AM, Tim Northover <
>>>>> t.p.northover at gmail.com> wrote:
>>>>>
>>>>>> Your first post was 6 hours ago and you've pinged it twice. That's
>>>>>> too frequent, the generally accepted ping rate on llvm lists is once per
>>>>>> week.
>>>>>>
>>>>>> Tim.
>>>>>>
>>>>>> On Jul 14, 2017 1:07 PM, "hameeza ahmed via llvm-dev" <
>>>>>> llvm-dev at lists.llvm.org> wrote:
>>>>>>
>>>>>>> please tell me how to solve this lanemask bits issue?
>>>>>>>
>>>>>>> how to increase lanemask bits?
>>>>>>>
>>>>>>> On Fri, Jul 14, 2017 at 8:33 PM, hameeza ahmed <hahmed2305 at gmail.com
>>>>>>> > wrote:
>>>>>>>
>>>>>>>>
>>>>>>>> Hello,
>>>>>>>> i am trying to construct a register of size 65536 bit by combining
>>>>>>>> 2 registers of 32768 bits. both the 32768 bit registers are different so i
>>>>>>>> have to use the following method
>>>>>>>>
>>>>>>>> let SubRegIndices = [sub_32768bit, sub_32768bit_hi],
>>>>>>>> CoveredBySubRegs = 1 in
>>>>>>>>
>>>>>>>> but i am getting following error..
>>>>>>>>
>>>>>>>> error:Ran out of lanemask bits to represent subregister
>>>>>>>> sub_32768bit_hi_then_sub_16384bit_hi_then_sub_32bit
>>>>>>>>
>>>>>>>> now how to increase lanemask bits? what changes are required
>>>>>>>> in IntrinsicEmitter.cpp file??
>>>>>>>>
>>>>>>>> Please reply.
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> LLVM Developers mailing list
>>>>>>> llvm-dev at lists.llvm.org
>>>>>>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>>>>>
>>>>>>>
>>>>>
>>>>
>>>
>>
>
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