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

[hameeza ahmed via llvm-dev]

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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