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

[Craig Topper via llvm-dev]

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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