llvm dev - Jun 2009 - [LLVMdev] What happened to the -fast flag for lli?

Hi,

I've just installed llvm from trunk and
lli seems to have lost the -fast option.

Can we have it back please?

Mark.

Hi,
I'm slightly confused here.

Not only, has -fast flag disappeared from lli,
the ExecutionEngine:createJIT API has changed as well.
I suspect these are related :)

What will this do to the speed of JIT code generation?
What effect do the new optimisation levels in ExecutionEngine:createJIT 
have?
What lli flag (if any) corresponds to these optimisation levels?
And is this documented anywhere?

Mark.

Hello Mark,

It's not a flag anymore, it is an enumeration.  See
http://www.nabble.com/Change-in-JIT-td23308581.html#a23308581 for details.

--Sam



----- Original Message ----
> From: Mark Shannon <marks at dcs.gla.ac.uk>
> To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu>
> Sent: Saturday, June 13, 2009 6:02:16 AM
> Subject: Re: [LLVMdev] What happened to the -fast flag for lli?
> 
> Hi,
> I'm slightly confused here.
> 
> Not only, has -fast flag disappeared from lli,
> the ExecutionEngine:createJIT API has changed as well.
> I suspect these are related :)
> 
> What will this do to the speed of JIT code generation?
> What effect do the new optimisation levels in ExecutionEngine:createJIT 
> have?
> What lli flag (if any) corresponds to these optimisation levels?
> And is this documented anywhere?
> 
> Mark.
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> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
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