On 11/24/2010 06:23 PM, Dmitry Plotnikov wrote:
> Hi,
>
> This patch enables vector conversions for ARM NEON architecture.  In 
> its current state vectorizer can't handle type conversions in the 
> hottest loop of libmp3lame on NEON since its backend doesn't have 
> appropriate builtins for type conversion.  For x86_64 and rs6000 
> architectures that also can vectorize conversions the default behavior 
> is retained.  We have rewritten condition in vectorizable_conversion() 
> in tree-vect-stmts.c for the case of NONE modifier.  Now It first 
> looks in convert_optab for suitable operation and then in builtins.  
> It's hard to make such fix in arm backend, because neon builtins are 
> not saved and enumerated as it's done for x86_64 and rs6000.  
> Bootstrapped and regtested on x86_64 without any regressions.
>
> Ok for trunk? 4.7?
>
>
Sorry, I forgot to attach the patch.