[llvm-dev] How to make when developing machine function pass ?

[PenYiWang via llvm-dev]

Gold linker really speed up.
You help me a lot.
Thank you !!

I would keep going trying ninja~


Reid Kleckner <rnk at google.com> 於 2020年3月11日 週三 上午3:33寫道：

> The google groups link seems to work for me, but is broken when I am not
> logged into my Google account. >_> I mean this thread titled "debug build
> busts memory":
>
> http://llvm.1065342.n5.nabble.com/llvm-dev-debug-build-busts-memory-td133229.html#a133237
>
> On Tue, Mar 10, 2020 at 10:44 AM Reid Kleckner <rnk at google.com> wrote:
>
>> One minute to recompile and relink one file is too long. There are ways
>> to make incremental development significantly faster, and there have been a
>> few threads about this on llvm-dev. This one came to mind:
>> https://groups.google.com/g/llvm-dev/c/ur-2aX_KvfM/m/FFRlZdZECAAJ
>> If you search around, you can find some of the standard recommendations:
>> - Use ninja instead of make
>> - Use lld or gold instead of ld.bfd
>> - Adjust debug info settings (-gmlt, split dwarf, or disable it)
>> - Use external tablegen (probably not your problem)
>>
>> Good luck!
>>
>> On Mon, Mar 9, 2020 at 3:31 AM PenYiWang via llvm-dev <
>> llvm-dev at lists.llvm.org> wrote:
>>
>>> Hi
>>>
>>> I am modifying X86RetpolineThunks.cpp.
>>>
>>> X86RetpolineThunks.cpp 's location is llvm-src/lib/Target/X86.
>>>
>>> Which target should I use , next time use clang test.c , I can see the
>>> difference .
>>>
>>> I found that  "make llc"  doesn't work.
>>>
>>> And either "make LLVMX86CodeGen" doen't work.
>>>
>>> "make clang" waste a lot of time, even -j64.
>>>
>>> Every time modifying the file of machine function pass ,
>>> I have to wait for 1 min.
>>>
>>> It drive me crazy.
>>>
>>> Which "target" should use to "make" when developing machine function
>>> pass ?
>>>
>>> Or is  there other way to develop machine function pass?
>>>
>>> Thank you.
>>>
>>> _______________________________________________
>>> LLVM Developers mailing list
>>> llvm-dev at lists.llvm.org
>>> https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>>>
>>
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