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

[Francis Visoiu Mistrih via llvm-dev]

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.

Cheers,

— 
Francis

>   Default target: x86_64-redhat-linux
>   Host CPU: broadwell
> 
> llc: Unknown command line argument '-debug-only=isel'.  Try: '/data/project/xiangzhai/llvm/build/bin/llc -help'
> llc: Did you mean '-debug-pass=isel'?
> 
> I couldn't grep debug-only command flags or options via git log, please give me some hint, thanks a lot!
> 
> -- 
> Regards,
> Leslie Zhai - https://reviews.llvm.org/p/xiangzhai/
> 
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