[LLVMdev] strace for whole-program bitcodes

[zhunan]

OK,thanks for the help!

I'll try it later!

Best regards!

在 2009-10-19一的 23:03 -0400，Rafael Espindola写道：
> 2009/10/19 zhunan <zhunansjtu at gmail.com>:
> > Yes,but when I just simply replace lto_codegen_compile(cg, ...) with
> > lto_codegen_write_merged_modules(cg, "/path/to/output.bc") in the
> > gold-plugin.cpp to see if it will generate a correct bc file,the
> > llvm-gcc/llvm-g++ will call the native ld in the linking step,which
> > causes the failture because of that ld can not recognize an object file
> > which contains LLVM's IL.
> 
> The plugin is running *in* the native linker. What you want to do is
> add an option in the plugin to write the bc file to an specified file
> *in addition* to producing a regular elf object. This way the build
> will complete correctly and you will get the .bc file you want.
> 
> > I understand the failture as this: libLLVMgold.so is just a plugin for
> > ld but not llvm-ld,when I want to build a whole-program bitcodes,llvm-ld
> > is the only available tool,so I think gold-plugin is not very useful to
> > archieve the goal,I'm considering to modify the codes of llvm-gcc's
> > collect2 to make it call llvm-ld automatically when receive certain
> > options.
> 
> It will probably be hard to get this to work correctly with archives
> and shared libraries. In 4.5 gcc we have a hacked collect2 for
> people using lto and gnu ld.
> 
> > Thanks
> >
> 
> Cheers,