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From: Richard Sandiford <richard.sandiford@arm.com>
To: Robin Dapp <rdapp@linux.ibm.com>
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Subject: Re: [PATCH] vect: Add bias parameter for partial vectorization
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Date: Mon, 10 Jan 2022 14:21:44 +0000
In-Reply-To: <eeecce06-768d-de06-37c1-43ad30a12782@linux.ibm.com> (Robin
 Dapp's message of "Mon, 10 Jan 2022 13:53:22 +0100")
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Robin Dapp <rdapp@linux.ibm.com> writes:
> Hi Richard,
>
>> I think it would be better to fold this into the existing documentation
>> a bit more:
> [..]
>
> done.
>
> Fixed the remaining nits in the attached v5.
>
> Bootstrap and regtest are good on s390x, Power9 and i386.
>
> Regards
>  Robin
>
> --
>
> gcc/ChangeLog:
>
>         * config/rs6000/vsx.md: Use const0 bias predicate.
>         * doc/md.texi: Document bias value.
>         * internal-fn.c (expand_partial_load_optab_fn): Add bias.
>         (expand_partial_store_optab_fn): Likewise.
>         (internal_len_load_store_bias): New function.
>         * internal-fn.h (VECT_PARTIAL_BIAS_UNSUPPORTED): New define.
>         (internal_len_load_store_bias): New function.
>         * tree-vect-loop-manip.c (vect_set_loop_controls_directly): Set
> bias.
>         (vect_set_loop_condition_partial_vectors): Add header_seq parameter.
>         * tree-vect-loop.c (vect_verify_loop_lens): Verify bias.
>         (vect_estimate_min_profitable_iters): Account for bias.
>         (vect_get_loop_len): Add bias-adjusted length.
>         * tree-vect-stmts.c (vectorizable_store): Use.
>         (vectorizable_load): Use.
>         * tree-vectorizer.h (struct rgroup_controls): Add bias-adjusted
> length.
>         (LOOP_VINFO_PARTIAL_LOAD_STORE_BIAS): New macro.

OK, thanks!

Richard