[LLVMdev] disable llc optimizations

[John Criswell]

On 12/6/10 11:39 AM, Andrew Lukefahr wrote:
> Hi,
>
> How would I disable dead code elimination in llc?  Can that be done 
> via the command line or do I need to modify llc's source?

You can use llc --help-hidden to see a list of options.  There are 
several -disable-xxx options that disable various code generator 
optimizations.

That said, I, like Duncan, wasn't aware that llc did any dead-code 
elimination (beyond peephole optimization).  Are you sure llc is 
removing the instructions you care about?

-- John T.

>
> Thanks
>
> Andrew Lukefahr
> andrewlukefahr at gmail.com <mailto:andrewlukefahr at gmail.com>
>
> Open Source, Open Minds

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