[LLVMdev] loop vectorizer misses opportunity, exploit

[Renato Golin]

On 31 October 2013 10:24, Frank Winter <fwinter at jlab.org> wrote:

>  What does 'stepping through' the loop vectorizer mean? Using the
> debugger and step through the program? Probably not. Is the way to go, to
> alter the 'canVectorize' function print debug output to see what's going on?
>

Stepping through 'opt -O3' with a debugger, yes. The debug messages are
enabled by using '-debug-only=loop-vectorizer', but they's only half the
story.

cheers,
--renato
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