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

hameeza ahmed via llvm-dev llvm-dev at lists.llvm.org
Wed Jul 19 15:04:08 PDT 2017


the file is not generated thats why getting such errors

On Jul 19, 2017 10:02 PM, "Craig Topper" <craig.topper at gmail.com> wrote:

> Can you send the generated registerinfo.inc file as well.
>
> ~Craig
>
> On Wed, Jul 19, 2017 at 2:47 PM, hameeza ahmed <hahmed2305 at gmail.com>
> wrote:
>
>> I have made changes in 3 files:
>> LaneBitmask.h, codegenregisters.cpp and miparser.cpp. files are attached
>> here.
>>
>> Now i am getting following errors. which means registerinfo.inc file is
>> not generated successfully.
>>
>> /PIM/lib/Target/X86/MCTargetDesc/X86BaseInfo.h:733:24: error:
>>       no member named 'XMM8' in namespace 'llvm::X86'
>>     if ((RegNo >= X86::XMM8 && RegNo <= X86::XMM31) ||
>>
>>
>> fatal error: too many errors emitted, stopping now [-ferror-limit=]
>> 20 errors generated.
>>
>> When i comment out the line to construct 65536 bit register in
>> registerinfo.td. it run fine.
>>
>> What to do?
>>
>> On Thu, Jul 20, 2017 at 2:36 AM, Krzysztof Parzyszek <
>> kparzysz at codeaurora.org> wrote:
>>
>>> Those couldn't be done generically, that's why the asserts were added.
>>>
>>> -Krzysztof
>>>
>>> On 7/19/2017 4:30 PM, Craig Topper wrote:
>>>
>>>> What about the static asserts protecting a Log call and another in the
>>>> parser?
>>>>
>>>> On Wed, Jul 19, 2017 at 2:26 PM Krzysztof Parzyszek <
>>>> kparzysz at codeaurora.org <mailto:kparzysz at codeaurora.org>> wrote:
>>>>
>>>>     On 7/19/2017 4:18 PM, Craig Topper wrote:
>>>>      > LaneMask isn't as self contained as it should be. 64 bits is
>>>> enough
>>>>      > here. The problem is accidental leaking of the current size.
>>>>      >
>>>>      > For example there was a hard coded compare with 32 in tablegen
>>>>     until I
>>>>      > fixed it recently.
>>>>
>>>>     This is most likely the only example.  I actually tested it with
>>>>     uint64_t (but without exceeding 32 lanes).
>>>>
>>>>     -Krzysztof
>>>>
>>>>     --
>>>>     Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
>>>>     hosted by The Linux Foundation
>>>>
>>>> --
>>>> ~Craig
>>>>
>>>
>>> --
>>> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
>>> hosted by The Linux Foundation
>>>
>>
>>
>
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