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

[hameeza ahmed via llvm-dev]

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.
>>>>
>>>>
>>>>
>>>
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>>>
>
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