[llvm-dev] llc: Unknown command line argument '-debug-only=isel'

[Leslie Zhai via llvm-dev]

在 2017年12月21日 23:54, Alex Bradbury 写道:
> On 21 December 2017 at 15:51, Leslie Zhai via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>>
>> 在 2017年12月21日 23:46, Francis Visoiu Mistrih 写道:
>>> Hi Leslie,
>>>
>>>> On 21 Dec 2017, at 15:14, Leslie Zhai via llvm-dev
>>>> <llvm-dev at lists.llvm.org> wrote:
>>>>
>>>> Hi LLVM developers,
>>>>
>>>> llc -march=mips -debug-only=isel was able to work in Nov 8 2017
>>>> https://reviews.llvm.org/D39723
>>>>
>>>> But it doesn't work now:
>>>>
>>>> $ clang --version
>>>> LLVM China clang version 6.0.0 (git at github.com:llvm-mirror/clang.git
>>>> 9b7b03045ee9b5622028537266aafeb9ea218ac1)
>>>> (git at github.com:llvm-mirror/llvm.git
>>>> 3a26601a88394c02603b8756527c55df9ab94d78) (based on LLVM 6.0.0svn)
>>>> Target: x86_64-redhat-linux
>>>> Thread model: posix
>>>> InstalledDir: /data/project/xiangzhai/llvm/build/./bin
>>>> $ llc --version
>>>> LLVM (http://llvm.org/):
>>>>     LLVM version 6.0.0svn
>>>>     Optimized build.
>>> I see you’re running an optimized build.
>>>
>>> You need a debug build to use "-debug-only”. I suggest you take a look at
>>> include/llvm/Support/Debug.h and the `DEBUG` macro.
>> -DCMAKE_BUILD_TYPE=Debug will eat up all my memory when linking... I
>> experienced it.
> I have good success with -DBUILD_SHARED_LIBS=True
> -DLLVM_USE_SPLIT_DWARF=True. You'll also have better results if gold
> is your system linker. If you have a recent LLD installed, you can set
> -DLLVM_ENABLE_LLD=True.
I will try those build options. I installed LLD to 
`/opt/llvm-svn/bin/ld.lld`
$ ld.lld --version
LLD 6.0.0 (trunk 317966) (compatible with GNU linkers)
And I use Fedora now, but I doesn't use Gentoo (10+ years) or ArchLinux 
(4+ years) any more, Ah! how do I act like an old man ...
Fedora 25 use GCC 6.4.1 and LLVM 3.9.1 by default, so my migration for 
DragonEgg is based on GCC 6.x and LLVM 3.9 firstly :)

>
> Best,
>
> Alex

-- 
Regards,
Leslie Zhai - https://reviews.llvm.org/p/xiangzhai/