llvm dev - May 2018 - Passing arguments to LTOCodeGenerator

In LTOCodeGenerator.cpp there are some options related to optimization remarks.
On MacOS, I can pass in this option to enable them:
     -Wl,-mllvm,-lto-pass-remarks-output=remarks

But on Linux using 2.29.1 binutils version of gold, I try this alternative:
     -Wl,--plugin-opt,-lto-pass-remarks-output=remarks

But I get this error message:
LLVMgold: Unknown command line argument
'--library=to-pass-remarks-output=remarks'.  Try: 'LLVMgold -he\
lp'
LLVMgold: Did you mean '-no-warn=to-pass-remarks-output=remarks'?

If I try this
     -Wl,--plugin-opt=lto-pass-remarks-output=remarks

I get
LLVMgold: Unknown command line argument
'lto-pass-remarks-output=remarks'.  Try: 'LLVMgold -help'
clang-7: error: linker command failed with exit code 1 (use -v to see
invocation)

Any suggestions are welcome,
Thanks
david


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I recently added support for opt remarks to the gold plugin, in r330252.
The option names are:
-plugin-opt=opt-remarks-with-hotness
-plugin-opt=opt-remarks-filename=[filename]

(I used the same option names as used by lld, which unfortunately is
different than the ones added to the old LTO API)

Teresa

On Thu, May 3, 2018 at 8:27 AM, David Callahan via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> In LTOCodeGenerator.cpp there are some options related to optimization
> remarks.
>
> On MacOS, I can pass in this option to enable them:
>
>      -Wl,-mllvm,-lto-pass-remarks-output=remarks
>
>
>
> But on Linux using 2.29.1 binutils version of gold, I try this alternative:
>
>      -Wl,--plugin-opt,-lto-pass-remarks-output=remarks
>
>
>
> But I get this error message:
>
> LLVMgold: Unknown command line argument
'--library=to-pass-remarks-output=remarks'.
> Try: 'LLVMgold -he\
>
> lp'
>
> LLVMgold: Did you mean '-no-warn=to-pass-remarks-output=remarks'?
>
>
>
> If I try this
>
>      -Wl,--plugin-opt=lto-pass-remarks-output=remarks
>
>
>
> I get
>
> LLVMgold: Unknown command line argument
'lto-pass-remarks-output=remarks'.
> Try: 'LLVMgold -help'
>
> clang-7: error: linker command failed with exit code 1 (use -v to see
> invocation)
>
>
>
> Any suggestions are welcome,
>
> Thanks
>
> david
>
>
>
>
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>
>

-- 
Teresa Johnson |  Software Engineer |  tejohnson at google.com |  408-460-2413
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