[LLVMdev] Enabling the vectorizer for -Os -- ping

Renato Golin renato.golin at linaro.org
Fri Jun 14 01:29:16 PDT 2013


On 14 June 2013 05:37, Nadav Rotem <nrotem at apple.com> wrote:

> Last week I wrote llvm-dev and presented data that shows how enabling the
> vectorizer on -Os can improve the performance of many workloads and that it
> has negligible effects on code size.  I also added a command line switch to
> make it easier for people to benchmark the vectorizer using -Os directly
> from clang without changing LLVM.  Has anyone done any benchmarks on -Os +
> vectorization ?
>

Hi Nadav,

I haven't, sorry. I'll run some tests on my Chromebook and will let you
know.

cheers,
--renato
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