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RE: [PATCH] Merging Cilk Plus into Trunk (Patch 1 of approximately 22)
>-----Original Message-----
>From: Richard Henderson [mailto:rth@redhat.com]
>Sent: Monday, September 10, 2012 12:03 PM
>To: Iyer, Balaji V
>Cc: Richard Guenther; gcc-patches@gcc.gnu.org; Gabriel Dos Reis; Aldy
>Hernandez (aldyh@redhat.com); Jeff Law
>Subject: Re: [PATCH] Merging Cilk Plus into Trunk (Patch 1 of approximately 22)
>
>On 09/07/2012 12:31 PM, Iyer, Balaji V wrote:
>> I hope I have not mistaken your question, but to clarify the elemental
>> function's definition and body is visible to all passes after the
>> invocation of gimplify_function_tree (). It is also visible for the
>> LTO optimization.
>
>If that's the case, what's the point in defining an external ABI and defining what
>__attribute__((vector)) placed on a function declaration means?
When you have __attribute__((vector)) you are asking the compiler to create a vector AND a scalar version of the function. The advantage is that if the function is used, for example, in 2 loops where 1 can be vectorized and another cannot, the vectorizable loop won't suffer (i.e. suffer from being not-vectorized).
Thanks,
Balaji V. Iyer.
>
>
>r~