[LLVMdev] Bug in x86 JIT fast emitter.

[Mark Shannon]

Evan,

Any plans to add it any time soon?
It would be really appreciated.

Evan Cheng wrote:
> X86 JIT does not yet support TLS.
> 
> Evan
> On Jun 12, 2009, at 2:48 AM, Mark Shannon wrote:
> 
>> Hi there,
>>
>> I think I've found a bug in the x86 JIT. I get an assertion failure  
>> when
>> using thread-local variables and the fast emitter.
>> It only happens with the JIT, the fast emiiter and thread-locals.
>> (The IR passes the verifier)
>>
>> Here's the failure:
>>
>> X86CodeEmitter.cpp:516: void<unnamed>::Emitter::emitInstruction(const
>> llvm::MachineInstr&, const llvm::TargetInstrDesc*): Assertion `0 &&
>> "psuedo instructions should be removed before code emission"' failed.
>>
>> There is a problem with submitting a bug-report, however.
>> Since llc has no trouble with thread-locals, I cannot actually  
>> generate
>> the assertion failure, without my compiler-generator.
>> I can dump out the IR, but it is rather large.
>>
>> So,
>> Is there a way to get llc to use the same emitter as the JIT, so  
>> that I
>> can produce a reasonably sized test-case.
>>
>> I tried the -fast flag, but it compiles correctly.
>>
>> Cheers,
>> Mark.
>> _______________________________________________
>> LLVM Developers mailing list
>> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
> 
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>