[LLVMdev] JIT: Inlining introduces intrinsics.

[Óscar Fuentes]

Hello Eli.

Eli Friedman <eli.friedman at gmail.com> writes:

>> If I activate the Inliner pass:
>>
>>    Builder.Inliner = createFunctionInliningPass(Threshold);
>>
>> this is the result:
>>
>> LLVM ERROR: Program used external function 'llvm.lifetime.start' which could not be resolved!
>>
>> It happens on almost all my test cases, even at -O0.
>>
>> This JIT compiler does the same as `opt' wrt optimization passes. I'm
>> using a LLVM snapshot from approx 4 months ago.
>
> Yes, the inliner does introduce llvm.lifetime.start... and CodeGen
> should eliminate it.  Are you using the interpreter?

No, I'm not using the interpreter. Is there any condition that prevents
CodeGen from removing those intrinsics?

> Otherwise, I have no clue how you could trigger that error.

Ok, I'll investigate a bit further. Thanks.