Thanks Kito, will commit this after the vec_init repeated sequence patch.

Pan

-----Original Message-----
From: Kito Cheng <kito.ch...@gmail.com> 
Sent: Monday, May 29, 2023 10:20 AM
To: Li, Pan2 <pan2...@intel.com>
Cc: Robin Dapp <rdapp....@gmail.com>; gcc-patches@gcc.gnu.org; 
juzhe.zh...@rivai.ai; kito.ch...@sifive.com; Wang, Yanzhang 
<yanzhang.w...@intel.com>
Subject: Re: [PATCH] RISC-V: Eliminate the magic number in riscv-v.cc

LGTM

On Fri, May 26, 2023 at 2:32 PM Li, Pan2 via Gcc-patches 
<gcc-patches@gcc.gnu.org> wrote:
>
> Thanks Robin.
>
> Sorry for not mentioned that it depends on another patch 
> https://gcc.gnu.org/pipermail/gcc-patches/2023-May/619536.html, which is in 
> the reviewing queue.
>
> Yes, totally agree we can remove the comments for some parameters excepts the 
> Boolean ones, as well as the term data related. I can file another PATCH to 
> make it happen due to it is another thing besides magic number elimination.
>
> Pan
>
> -----Original Message-----
> From: Robin Dapp <rdapp....@gmail.com>
> Sent: Friday, May 26, 2023 2:24 PM
> To: Li, Pan2 <pan2...@intel.com>; gcc-patches@gcc.gnu.org
> Cc: rdapp....@gmail.com; juzhe.zh...@rivai.ai; kito.ch...@sifive.com; 
> Wang, Yanzhang <yanzhang.w...@intel.com>
> Subject: Re: [PATCH] RISC-V: Eliminate the magic number in riscv-v.cc
>
> Hi,
>
> > This patch would like to remove the magic number in the riscv-v.cc, 
> > and align the same value to one macro.
>
> > diff --git a/gcc/config/riscv/riscv-v.cc 
> > b/gcc/config/riscv/riscv-v.cc index 458020ce0a1..20b589bf51b 100644
> > --- a/gcc/config/riscv/riscv-v.cc
> > +++ b/gcc/config/riscv/riscv-v.cc
> > @@ -351,13 +351,15 @@ emit_vlmax_insn (unsigned icode, int op_num, 
> > rtx *ops, rtx vl)  {
> >    machine_mode data_mode = GET_MODE (ops[0]);
> >    machine_mode mask_mode = get_mask_mode (data_mode).require ();
> > -  /* We have a maximum of 11 operands for RVV instruction patterns 
> > according to
> > -   * vector.md.  */
> > -  insn_expander<11> e (/*OP_NUM*/ op_num, /*HAS_DEST_P*/ true,
> > -                    /*FULLY_UNMASKED_P*/ true,
> > -                    /*USE_REAL_MERGE_P*/ false, /*HAS_AVL_P*/ true,
> > -                    /*VLMAX_P*/ true,
> > -                    /*DEST_MODE*/ data_mode, /*MASK_MODE*/ mask_mode);
> > +  insn_expander<RVV_INSN_OPERANDS_MAX> e (/*OP_NUM*/ op_num,
> > +                                       /*HAS_DEST_P*/ true,
> > +                                       /*FULLY_UNMASKED_P*/ true,
> > +                                       /*USE_REAL_MERGE_P*/ false,
> > +                                       /*HAS_AVL_P*/ true,
> > +                                       /*VLMAX_P*/ true,
> > +                                       /*DEST_MODE*/ data_mode,
> > +                                       /*MASK_MODE*/ mask_mode);
>
> I don't see where RVV_INSN_OPERANDS_MAX is defined.  Maybe you missed to 
> include that hunk?
>
> Apart from that maybe you could also remove the comments for dest_mode, 
> mask_mode and op_num?  I think the general "custom" is to just add them for 
> bool arguments and name non-bool arguments descriptively.  Here that could 
> mean renaming data_mode to dest_mode where appropriate (usually data_mode is 
> used to distinguish between data mode and comparison mode in conditionals, 
> not in regular insns where everything is "data").
>
> Regards
>  Robin

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