[LLVMdev] Decouple LoopVectorizer from O3

[Nadav Rotem]

Hi Anadi, 

In the file PassManagerBuilder.cpp you can change the lines below to get rid of the O3 restriction.   

189   if (LoopVectorize && OptLevel > 2)
190     MPM.add(createLoopVectorizePass());
 
Nadav




On Apr 10, 2013, at 5:39 PM, Anadi Mishra <reachanadi at gmail.com> wrote:

> Hello,
> 
> I am trying out the LoopVectorizer(LV) pass and would like to decouple it from O3 which is currently required to run LV. I want to do this because I want to understand the behaviour of LV by trying simple loops but the O3 mostly optimises away the loop body.
> 
> Any ideas would be appreciated.
> 
> Best,
> Anadi.
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