MLGO Demo Problem

[xc303919323]

I recently follow project for optimization. Is demo of this repository too old？I have compiled it and produce many errors. Do you have a docker or the latest build command?

[mtrofin]

We should set up a docker image, #71 has provided one in the meantime, perhaps that helps?

What errors do you get, btw?

(Also related #131 )

[xc303919323]

Thanks, I read this and think about my problem. I have many linker errors in build fuchsia project, just like the following errors. I use the newest LLVM project, but my fuchsia project use the jiri update -gc ~/ml-compiler-opt/docs/demo/fuchsia.xml command. I'm tring to get the newest fuchsia project to test.

ld.lld: error: undefined symbol: _Unwind_SetIP
>>> referenced by cxa_personality.cpp:560 (build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxxabi/src/cxa_personality.cpp:560)
>>>               cxa_personality.cpp.o:(__gxx_personality_v0) in archive ../../../llvm-install/usr/local/bin/../lib/x86_64-unknown-linux-gnu/libc++.a
>>> referenced by cxa_personality.cpp:560 (build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxxabi/src/cxa_personality.cpp:560)
>>>               cxa_personality.cpp.o:(__gxx_personality_v0) in archive ../../../llvm-install/usr/local/bin/../lib/x86_64-unknown-linux-gnu/libc++.a

ld.lld: error: undefined symbol: _Unwind_GetLanguageSpecificData
>>> referenced by cxa_personality.cpp:626 (build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxxabi/src/cxa_personality.cpp:626)
>>>               cxa_personality.cpp.o:(__gxx_personality_v0) in archive ../../../llvm-install/usr/local/bin/../lib/x86_64-unknown-linux-gnu/libc++.a

ld.lld: error: undefined symbol: _Unwind_GetIP
>>> referenced by cxa_personality.cpp:641 (build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxxabi/src/cxa_personality.cpp:641)
>>>               cxa_personality.cpp.o:(__gxx_personality_v0) in archive ../../../llvm-install/usr/local/bin/../lib/x86_64-unknown-linux-gnu/libc++.a

ld.lld: error: undefined symbol: _Unwind_GetRegionStart
>>> referenced by cxa_personality.cpp:644 (build/runtimes/runtimes-x86_64-unknown-linux-gnu-bins/libcxxabi/src/cxa_personality.cpp:644)
>>>               cxa_personality.cpp.o:(__gxx_personality_v0) in archive ../../../llvm-install/usr/local/bin/../lib/x86_64-unknown-linux-gnu/libc++.a
clang++: error: linker command failed with exit code 1 (use -v to see invocation)

[boomanaiden154]

Try building at head of the Fuchsia tree and using the latest known compatible LLVM commit:

cd ${FUCHSIA_SRCDIR}
jiri package 'fuchsia/third_party/clang/${platform}'
cd ${LLVM_SRCDIR}
git checkout {output of previous command}

We currently have a PR open to get rid of the fuchsia.xml file due to some problems we've had there. Last time I tried working through the demo I was able to at least getting LLVM built with those steps (running into an error later on in the Fuchsia build though, but that might have been fixed at some point).

We also have #121 open which has some scripts that should go through the entire demo for the inliner-for-size case and you can use those for reference. They use the docker image checked into the repository. There were some issues when I last worked on that PR, but they might be resolved at this point.

[xc303919323]

Thanks, I'm using LLVM 15 and newest mlgo code to success compile.