[llvm-dev] [Beginner] Understanding Tablegen language

[Rotate Right via llvm-dev]

Thanks. -print-records is useful in addition to other tips.

On Wed, Jul 15, 2020 at 11:33 PM Madhur Amilkanthwar via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> I use --print-records and then search for opcode name or pattern name and
> then look for "PatternToMatch" key. It is close to the map you're looking
> for.
>
> On Wed, Jul 15, 2020 at 11:27 PM Thomas Lively via llvm-dev <
> llvm-dev at lists.llvm.org> wrote:
>
>> Adding -debug to a -gen-dag-isel run can also print useful information
>> about the parsed patterns.
>>
>> On Wed, Jul 15, 2020 at 10:44 AM Matt Arsenault via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>>
>>>
>>> > On Jul 15, 2020, at 13:33, Rotate Right via llvm-dev <
>>> llvm-dev at lists.llvm.org> wrote:
>>> >
>>> > Is there a backend to Tablegen which can dump a map of
>>> pattern-to-matched to instruction-to-be-generated?
>>> > --help doesn't seem to indicate anything like that.
>>>
>>>
>>> If you run tablgen with no arguments, it produces the fully expanded
>>> tablegen. You can directly view what ends up getting interpreted there
>>>
>>> -Matt
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>
>
> --
> *Disclaimer: Views, concerns, thoughts, questions, ideas expressed in this
> mail are of my own and my employer has no take in it. *
> Thank You.
> Madhur D. Amilkanthwar
>
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