[PATCH] support llvm.vectorization.vector_width metadata

[Redmond, Paul]

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> 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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