[llvm-dev] Invoke loop vectorizer

[Andrey Bokhanko via llvm-dev]

Hi Xiaochu,

Clang uses -O0 by default, that doesn't run any optimizations. Try
supplying -O1 or higher.

Yours,
Andrey


On Fri, Aug 12, 2016 at 1:04 AM, Xiaochu Liu via llvm-dev <
llvm-dev at lists.llvm.org> wrote:

> Hi there ,
>
> I use clang-cl /Qvec test.c to compile the code. But the pass
> LoopVectorizer is never invoked.
>
> I was wondering if this is sufficient to enable auto vectorizer?
>
> Thanks,
> Xiaochu
>
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