[LLVMdev] vmkit compile error when "compile into a dynamic library the core Java libs"

[Nicolas Geoffray]

Hi Lu Lu,

I should have read this post before pointing you to VMKit in the other post!

I'm not sure about your problem. The ahead of time compiler in VMKit has
quite bitrotted and is now only used to compile the MMTk framework written
in Java to llvm IR. I'm in the process of cleaning that up, and hopefully
getting it done before llvm 3.0.

Compiling the core Java libs was a nice feature at some point, but
1) It didn't support precise GC
2) It took ages to compile
3) The memory footprint of the resulting library was huge (~70MB) and
couldn't work without having also loaded the Java classes (~45MB).

There are ways to improve the three issues, but I haven't had time to work
on it.

Cheers,
Nicolas

On Fri, Jul 8, 2011 at 4:14 AM, lu lu <lulu760 at gmail.com> wrote:

> hi
> I followed the instructions to compile vmkit step by step.
> it worked until "Compile into a dynamic library the core Java libs". After
> "make ENABLE_OPTIMIZED=1", I didn't go get coffee because of these errors:
> llc -relocation-model=pic -disable-fp-elim glibj-optimized.zip.bc -o
> glibj.zip.s
> unsupported GC: vmkit
> UNREACHABLE executed!
> 0  llc             0x0000000000e40e4f
> 1  llc             0x0000000000e41647
> 2  libpthread.so.0 0x000000372560e7c0
> 3  libc.so.6       0x0000003dc9e30265 gsignal + 53
> 4  libc.so.6       0x0000003dc9e31d10 abort + 272
> 5  llc             0x0000000000e2e9b0 llvm::llvm_unreachable_internal(char
> const*, char const*, unsigned int) + 384
> 6  llc             0x0000000000a680f9
> llvm::GCModuleInfo::getOrCreateStrategy(llvm::Module const*, std::string
> const&) + 265
> 7  llc             0x0000000000a683a7
> llvm::GCModuleInfo::getFunctionInfo(llvm::Function const&) + 263
> 8  llc             0x0000000000a6919e
> 9  llc             0x0000000000d872c6
> llvm::FPPassManager::doInitialization(llvm::Module&) + 54
> 10 llc             0x0000000000d8ef5c
> llvm::FPPassManager::runOnModule(llvm::Module&) + 44
> 11 llc             0x0000000000d8eb3f
> llvm::MPPassManager::runOnModule(llvm::Module&) + 527
> 12 llc             0x0000000000d8ec22
> llvm::PassManagerImpl::run(llvm::Module&) + 114
> 13 llc             0x0000000000d8ecbd llvm::PassManager::run(llvm::Module&)
> + 13
> 14 llc             0x000000000051aab7 main + 4471
> 15 libc.so.6       0x0000003dc9e1d994 __libc_start_main + 244
> 16 llc             0x00000000005181a9
> Stack dump:
> 0.      Program arguments: llc -relocation-model=pic -disable-fp-elim
> glibj-optimized.zip.bc -o glibj.zip.s
> 1.      Running pass 'Function Pass Manager' on module
> 'glibj-optimized.zip.bc'.
> Aborted
>
> I was confused by this error, didn't know how to go on, could someone give
> me some hints.
> I did these job on LLVM-2.9 and vmkit-0.29
>
> Thanks!
> lulu760 at gmail.com
>
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