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Re: [PATCH, vec-tails 01/10] New compiler options


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2016-06-16 16:42 GMT+03:00 Ilya Enkovich <enkovich.gnu@gmail.com>:
> On 20 May 14:40, Ilya Enkovich wrote:
>> > Can you make all these --params then?  I think to be useful to users we'd want
>> > them to be loop pragmas rather than options.
>>
>> OK, I'll change it to params.  I didn't think about control via
>> pragmas but will do now.
>>
>> Thanks,
>> Ilya
>>
>> >
>> > Richard.
>> >
>
> Hi,
>
> Here is a set of params to be used instead of new flags.  Does this set looks OK?
> I still use new option for cost model for convenient soct model enum re-use.
>
> Thanks,
> Ilya
> --
> gcc/
>
> 2016-06-16  Ilya Enkovich  <ilya.enkovich@intel.com>
>
>         * common.opt (fvect-epilogue-cost-model=): New.
>         * params.def (PARAM_VECT_EPILOGUES_COMBINE): New.
>         (PARAM_VECT_EPILOGUES_MASK): New.
>         (PARAM_VECT_EPILOGUES_NOMASK): New.
>         (PARAM_VECT_SHORT_LOOPS): New.
>         * doc/invoke.texi (-fvect-epilogue-cost-model): New.
>
>
> diff --git a/gcc/common.opt b/gcc/common.opt
> index fccd4b5..10cd75b 100644
> --- a/gcc/common.opt
> +++ b/gcc/common.opt
> @@ -2582,6 +2582,10 @@ fsimd-cost-model=
>  Common Joined RejectNegative Enum(vect_cost_model) Var(flag_simd_cost_model) Init(VECT_COST_MODEL_UNLIMITED) Optimization
>  Specifies the vectorization cost model for code marked with a simd directive.
>
> +fvect-epilogue-cost-model=
> +Common Joined RejectNegative Enum(vect_cost_model) Var(flag_vect_epilogue_cost_model) Init(VECT_COST_MODEL_DEFAULT) Optimization
> +Specifies the cost model for epilogue vectorization.
> +
>  Enum
>  Name(vect_cost_model) Type(enum vect_cost_model) UnknownError(unknown vectorizer cost model %qs)
>
> diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
> index ce162a0..ecbd7ce 100644
> --- a/gcc/doc/invoke.texi
> +++ b/gcc/doc/invoke.texi
> @@ -7638,6 +7638,14 @@ or Cilk Plus simd directive.  The @var{model} argument should be one of
>  have the same meaning as described in @option{-fvect-cost-model} and by
>  default a cost model defined with @option{-fvect-cost-model} is used.
>
> +@item -fvect-epilogue-cost-model=@var{model}
> +@opindex fvect-epilogue-cost-model
> +Alter the cost model used for vectorization of loop epilogues.  The
> +@var{model} argument should be one of @samp{unlimited}, @samp{dynamic},
> +@samp{cheap}.  All values of @var{model} have the same meaning as
> +described in @option{-fvect-cost-model} and by default @samp{dynamic}
> +cost model is used.
> +
>  @item -ftree-vrp
>  @opindex ftree-vrp
>  Perform Value Range Propagation on trees.  This is similar to the
> diff --git a/gcc/params.def b/gcc/params.def
> index 62a1e40..3bac68c 100644
> --- a/gcc/params.def
> +++ b/gcc/params.def
> @@ -1220,6 +1220,28 @@ DEFPARAM (PARAM_MAX_SPECULATIVE_DEVIRT_MAYDEFS,
>           "Maximum number of may-defs visited when devirtualizing "
>           "speculatively", 50, 0, 0)
>
> +DEFPARAM (PARAM_VECT_EPILOGUES_COMBINE,
> +         "vect-epilogues-combine",
> +         "Enable loop epilogue vectorization by combining it with "
> +         "vectorized loop body.",
> +         0, 0, 1)
> +
> +DEFPARAM (PARAM_VECT_EPILOGUES_MASK,
> +         "vect-epilogues-mask",
> +         "Enable loop epilogue vectorization using the same vector "
> +         "size and masking.",
> +         0, 0, 1)
> +
> +DEFPARAM (PARAM_VECT_EPILOGUES_NOMASK,
> +         "vect-epilogues-nomask",
> +         "Enable loop epilogue vectorization using smaller vector size.",
> +         0, 0, 1)
> +
> +DEFPARAM (PARAM_VECT_SHORT_LOOPS,
> +         "vect-short-loops",
> +         "Enable vectorization of low trip count loops using masking.",
> +         0, 0, 1)
> +
>  /*
>
>  Local variables:


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