[PATCH] D137517: [TargetParser] Generate the defs for RISCV CPUs using llvm-tblgen.

[Francesco Petrogalli via Phabricator via llvm-commits]

fpetrogalli added a comment.

In D137517#4045337 <https://reviews.llvm.org/D137517#4045337>, @jrtc27 wrote:

> In D137517#4045315 <https://reviews.llvm.org/D137517#4045315>, @fpetrogalli wrote:
>
>> In D137517#4045299 <https://reviews.llvm.org/D137517#4045299>, @jrtc27 wrote:
>>
>>> In D137517#4042875 <https://reviews.llvm.org/D137517#4042875>, @fpetrogalli wrote:
>>>
>>>> In D137517#4042758 <https://reviews.llvm.org/D137517#4042758>, @fpetrogalli wrote:
>>>>
>>>>> After submitting this, I had to revert it <https://github.com/llvm/llvm-project/commit/8bd65e535fb33bc48805bafed8217b16a853e158> because of failures like https://lab.llvm.org/buildbot/#/builders/225/builds/12367/steps/5/logs/stdio
>>>>
>>>> I have resubmitted with what I hope is the right fix (I could not reproduce any of the failures I was seeing in buildbot, on my machine the build is fine).
>>>>
>>>> The new commit is at https://github.com/llvm/llvm-project/commit/ac1ffd3caca12c254e0b8c847aa8ce8e51b6cfbf - in the commit message I have explained what I have changed WRT this original patch. I have added  the
>>>> tablegen target `RISCVTargetParserTableGen` in the `DEPENDS` list of `clangDriver` and `clangBasic`. This makes sure that the `.*inc` file with theist o the CPU is available even if `LLVMTargetParser` has not been built yet.
>>>
>>> But you didn't use the proper Differential Revision tag, so the diff here didn't get updated to reflect the amended version committed :(
>>
>> What should I have done? Add  the `Differential Revision: https://reviews.llvm.org/D137517` as the last line of the commit with the rework? I wasn't aware of this for reworks.
>
> Yes, it should have the same trailer as the original commit, otherwise it won't be correctly tracked by Phabricator. A "rework" isn't special, it's revert, reopen the revision, update the revision and land the revision again. If re-review isn't needed then you can skip some of the middle, but that's it. Though in this case I do think re-review was warranted, the new clang dependency seems a bit dubious and hints at the design not being quite right.

My bad -  I assumed that adding such tablegenning dependency in clang was a minor thing. I'll see if I can remove it. Any suggestions on how this could be done without duplicating the information in RISCV.td?


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  https://reviews.llvm.org/D137517/new/

https://reviews.llvm.org/D137517