From: "Hu, Lin1" <lin1.hu@intel.com>
To: "Beulich, Jan" <JBeulich@suse.com>
Cc: "Lu, Hongjiu" <hongjiu.lu@intel.com>,
"binutils@sourceware.org" <binutils@sourceware.org>,
"Cui, Lili" <lili.cui@intel.com>
Subject: RE: [PATCH v3 8/9] Support APX NDD optimized encoding.
Date: Wed, 13 Dec 2023 06:06:46 +0000 [thread overview]
Message-ID: <SJ0PR11MB5940D33F14F48D31D037C570A68DA@SJ0PR11MB5940.namprd11.prod.outlook.com> (raw)
In-Reply-To: <a0da682d-1e5c-43cc-a9b5-08f1145fcb39@suse.com>
> -----Original Message-----
> From: Jan Beulich <jbeulich@suse.com>
> Sent: Tuesday, December 12, 2023 4:46 PM
> To: Hu, Lin1 <lin1.hu@intel.com>
> Cc: Lu, Hongjiu <hongjiu.lu@intel.com>; binutils@sourceware.org; Cui, Lili
> <lili.cui@intel.com>
> Subject: Re: [PATCH v3 8/9] Support APX NDD optimized encoding.
>
> On 12.12.2023 04:18, Hu, Lin1 wrote:
> >> -----Original Message-----
> >> From: Jan Beulich <jbeulich@suse.com>
> >> Sent: Monday, December 11, 2023 8:28 PM
> >>
> >> On 24.11.2023 08:02, Cui, Lili wrote:
> >>> --- a/gas/config/tc-i386.c
> >>> +++ b/gas/config/tc-i386.c
> >>> @@ -7148,6 +7148,58 @@ check_APX_operands (const insn_template *t)
> >>> return 0;
> >>> }
> >>>
> >>> +/* Check if the instruction use the REX registers. */ static bool
> >>> +check_RexOperands () {
> >>> + for (unsigned int op = 0; op < i.operands; op++)
> >>> + {
> >>> + if (i.types[op].bitfield.class != Reg)
> >>> + continue;
> >>> +
> >>> + if (i.op[op].regs->reg_flags & (RegRex | RegRex64))
> >>> + return true;
> >>> + }
> >>> +
> >>> + if ((i.index_reg && (i.index_reg->reg_flags & (RegRex | RegRex64)))
> >>> + || (i.base_reg && (i.base_reg->reg_flags & (RegRex | RegRex64))))
> >>> + return true;
> >>> +
> >>> + /* Check pseudo prefix {rex} are valid. */ return
> >>> + i.rex_encoding;
> >>
> >> Can this actually happen, when we're converting from EVEX to legacy?
> >> (Initially I wanted to ask about "rex" and alike prefixes, i.e. the
> >> non- pseudo
> >> ones.)
> >>
> >
> > This is to align with check_EgprOperands. I hope the function be more general.
> Not just for this optimization problem.
>
> But then the comment shouldn't say "REX registers", and "Operands" in its name
> isn't quite right either.
>
> Also you want to make the function be a proper modern declaration, by adding
> "void" between the parentheses.
>
I have modified the comment like " Check if the instruction use the REX registers or REX prefix." And function name is check_RexOperands_or_RexPrefix.
BRs,
Lin
next prev parent reply other threads:[~2023-12-13 6:06 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-24 7:02 [PATCH 1/9] Make const_1_mode print $1 in AT&T syntax Cui, Lili
2023-11-24 7:02 ` [PATCH v3 2/9] Support APX GPR32 with rex2 prefix Cui, Lili
2023-12-04 16:30 ` Jan Beulich
2023-12-05 13:31 ` Cui, Lili
2023-12-06 7:52 ` Jan Beulich
2023-12-06 12:43 ` Cui, Lili
2023-12-07 9:01 ` Jan Beulich
2023-12-08 3:10 ` Cui, Lili
2023-11-24 7:02 ` [PATCH v3 3/9] Created an empty EVEX_MAP4_ sub-table for EVEX instructions Cui, Lili
2023-11-24 7:02 ` [PATCH v3 4/9] Support APX GPR32 with extend evex prefix Cui, Lili
2023-12-07 12:38 ` Jan Beulich
2023-12-08 15:21 ` Cui, Lili
2023-12-11 8:34 ` Jan Beulich
2023-12-12 10:44 ` Cui, Lili
2023-12-12 11:16 ` Jan Beulich
2023-12-12 12:32 ` Cui, Lili
2023-12-12 12:39 ` Jan Beulich
2023-12-12 13:15 ` Cui, Lili
2023-12-12 14:13 ` Jan Beulich
2023-12-13 7:36 ` Cui, Lili
2023-12-13 7:48 ` Jan Beulich
2023-12-12 12:58 ` Cui, Lili
2023-12-12 14:04 ` Jan Beulich
2023-12-13 8:35 ` Cui, Lili
2023-12-13 9:13 ` Jan Beulich
2023-12-07 13:34 ` Jan Beulich
2023-12-11 6:16 ` Cui, Lili
2023-12-11 8:43 ` Jan Beulich
2023-12-11 11:50 ` Jan Beulich
2023-11-24 7:02 ` [PATCH v3 5/9] Add tests for " Cui, Lili
2023-12-07 14:05 ` Jan Beulich
2023-12-11 6:16 ` Cui, Lili
2023-12-11 8:55 ` Jan Beulich
2023-11-24 7:02 ` [PATCH v3 6/9] Support APX NDD Cui, Lili
2023-12-08 14:12 ` Jan Beulich
2023-12-11 13:36 ` Cui, Lili
2023-12-11 16:50 ` Jan Beulich
2023-12-13 10:42 ` Cui, Lili
2024-03-22 10:02 ` Jan Beulich
2024-03-22 10:31 ` Jan Beulich
2024-03-26 2:04 ` Cui, Lili
2024-03-26 7:06 ` Jan Beulich
2024-03-26 7:18 ` Cui, Lili
2024-03-22 10:59 ` Jan Beulich
2024-03-26 8:22 ` Cui, Lili
2024-03-26 9:30 ` Jan Beulich
2024-03-27 2:41 ` Cui, Lili
2023-12-08 14:27 ` Jan Beulich
2023-12-12 5:53 ` Cui, Lili
2023-12-12 8:28 ` Jan Beulich
2023-11-24 7:02 ` [PATCH v3 7/9] Support APX Push2/Pop2 Cui, Lili
2023-12-11 11:17 ` Jan Beulich
2023-12-15 8:38 ` Cui, Lili
2023-12-15 8:44 ` Jan Beulich
2023-11-24 7:02 ` [PATCH v3 8/9] Support APX NDD optimized encoding Cui, Lili
2023-12-11 12:27 ` Jan Beulich
2023-12-12 3:18 ` Hu, Lin1
2023-12-12 8:41 ` Jan Beulich
2023-12-13 5:31 ` Hu, Lin1
2023-12-12 8:45 ` Jan Beulich
2023-12-13 6:06 ` Hu, Lin1 [this message]
2023-12-13 8:19 ` Jan Beulich
2023-12-13 8:34 ` Hu, Lin1
2023-11-24 7:02 ` [PATCH v3 9/9] Support APX JMPABS for disassembler Cui, Lili
2023-11-24 7:09 ` [PATCH 1/9] Make const_1_mode print $1 in AT&T syntax Jan Beulich
2023-11-24 11:22 ` Cui, Lili
2023-11-24 12:14 ` Jan Beulich
2023-12-12 2:57 ` Lu, Hongjiu
2023-12-12 8:16 ` Cui, Lili
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