[LLVMdev] Getting started with GC

[Tom Brown]

On Tue, Oct 26, 2004 at 11:17:00PM -0500, Chris Lattner wrote:
> On Tue, 26 Oct 2004, Tom Brown wrote:
> > $ llvm-as alloc_loop.ll
> > $ lli alloc_loop.bc
> > lli: Globals.cpp:81: llvm::GlobalVariable::GlobalVariable(const llvm::Type*, bool, llvm::GlobalValue::LinkageTypes, llvm::Constant*, const std::string&, llvm::Module*): Assertion `Initializer->getType() == Ty && "Initializer should be the same type as the GlobalVariable!"' failed.
> > lli((anonymous namespace)::PrintStackTrace()+0x1a)[0x857f21a]
> > lli((anonymous namespace)::SignalHandler(int)+0xcb)[0x857f48d]
> > [0xffffe420]
> > How should we get this to run?
> 
> Sorry about that, patch for this problem here:
> http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20041025/019891.html
That patch does fix the problem. Thank you. I used the following
llvm-link -f -o linked.bc alloc_loop.bc ~/llvm/runtime/GC/SemiSpace/Debug/semispace.bc
because it seemed easier than working out if and how to get dynamic
loading and linking to work. Perhaps the process will be smoother when
I restart using projects/sample/ . Running linked.bc outputs

Garbage collecting!!
process_root[0x0xbffff3f0] = 0x0x41257008
process_root[0x0xbffff3ec] = 0x0x41257012
lli((anonymous namespace)::PrintStackTrace()+0x1a)[0x857f236]
lli((anonymous namespace)::SignalHandler(int)+0xcb)[0x857f4a9]
[0xffffe420]
lli(llvm::ExecutionEngine::runFunctionAsMain...

Which is too be expected since llvm_gc_collect in
llvm/runtime/GC/SemiSpace/semispace.c ends with abort();


I believe we have our work cut out for us. Hopefully you'll have a
working GC by Christmas time.


Tom

-- 
28 70 20 71 2C 65 29 61 9C B1 36 3D D4 69 CE 62 4A 22 8B 0E DC 3E
mailto:tdbrown at uiuc.edu
http://thecap.org/