[PATCH] support llvm.vectorization.vector_width metadata

[Redmond, Paul]

I'm fine with llvm.vector.width. Anyone object?

On 2013-05-24, at 2:45 PM, 罗勇刚(Yonggang Luo) wrote:

Is that really need such a long name?
why llvm.vector.width is not suite here?
along with
llvm.vector.force
llvm.vector.disable
llvm.vector.unroll
?

I know vectorization is a named verb, and have different meaning with vector.
but still vector is really simpler.



2013/5/25 Arnold Schwaighofer <aschwaighofer at apple.com<mailto:aschwaighofer at apple.com>>
That would be great. I think the following annotations would be useful:

llvm.vectorization.unroll
llvm.vectorization.force (vectorize without consulting the cost model)
llvm.vectorization.disable (don’t vectorize)

Thanks

On May 24, 2013, at 1:25 PM, "Redmond, Paul" <paul.redmond at intel.com<mailto:paul.redmond at intel.com>> wrote:

> Sure. Should I also add support for llvm.vectorization.unroll? Are there any other obvious hints?
>
> On 2013-05-24, at 2:22 PM, Arnold Schwaighofer wrote:
>
>>
>> On May 24, 2013, at 12:49 PM, "Redmond, Paul" <paul.redmond at intel.com<mailto:paul.redmond at intel.com>> wrote:
>>
>>> Hi,
>>>
>>> The attached patch modifies LoopVectorizer to recognize llvm.vectorization.vector_width metadata attached to llvm.loop metadata.
>>>
>>> The llvm.loop.parallel metadata has been renamed to llvm.loop to be more generic. Loop::isAnnotatedParallel now looks for llvm.loop and associated llvm.mem.parallel_loop_access. If we decide that we still need an explicit llvm.loop.parallel metadata then it can be added as a child of llvm.loop.
>>>
>>
>> Can you also include an update to the LangRef.
>>
>>
>> Thanks
>>
>>
>>> Loop::setLoopID was added for symmetry and it is used in a forthcoming patch which preserves llvm.loop metadata in loop passes.
>>>
>>> paul
>>>
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--
         此致
礼
罗勇刚
Yours
    sincerely,
Yonggang Luo