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From: Michael Matz <matz@suse.de>
To: Martin Liska <mliska@suse.cz>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: [PATCH 5/9] Come up with an abstraction.
Date: Thu, 08 Aug 2019 16:29:00 -0000	[thread overview]
Message-ID: <alpine.LSU.2.21.1908081549030.25869@wotan.suse.de> (raw)
In-Reply-To: <24e91baf28c01421ba05c877e00c058a2008a5cc.1565105736.git.mliska@suse.cz>

Hi,

On Mon, 10 Jun 2019, Martin Liska wrote:

> 2019-07-24  Martin Liska  <mliska@suse.cz>
> 
> 	* fold-const.c (operand_equal_p): Rename to ...
> 	(operand_compare::operand_equal_p): ... this.
> 	(add_expr):  Rename to ...
> 	(operand_compare::hash_operand): ... this.
> 	(operand_compare::operand_equal_valueize): Likewise.
> 	(operand_compare::hash_operand_valueize): Likewise.
> 	* fold-const.h (operand_equal_p): Set default
> 	value for last argument.
> 	(class operand_compare): New.

Hmpf.  A class without any data?  That doesn't sound like a good design.  
You seem to need it only to have the possibility of virtual functions, 
i.e. fancy callbacks.  AFAICS you only have one derived class, i.e. a 
simple distinction of two cases.  What do you think about encoding the 
additional new (ICF) case in the (existing) 'flags' argument to 
operand_equal_p (and in case the ICF flag is set simply call the 
"callback" directly)?  IMHO that would also make the logic within 
operand_equal_p clearer, because you don't have to think about all the 
potential callback functions that might be called.


Ciao,
Michael.

  reply	other threads:[~2019-08-08 15:55 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-22 12:50 [RFC] operand_equal_p with valueization Jan Hubicka
2015-05-22 13:40 ` Richard Biener
2015-05-22 14:12   ` Jan Hubicka
2015-05-26  8:18     ` Richard Biener
2015-05-26 19:09       ` Jan Hubicka
2015-05-27  8:49         ` Richard Biener
2019-06-18 11:10           ` [RFC] " Martin Liška
2019-08-06 15:44             ` [PATCH 0/9] IPA ICF overhaul Martin Liska
2019-08-06 15:43               ` [PATCH 7/9] IPA ICF: remove dead code Martin Liska
2019-08-08 14:44                 ` Jeff Law
2019-08-06 15:43               ` [PATCH 5/9] Come up with an abstraction Martin Liska
2019-08-08 16:29                 ` Michael Matz [this message]
2019-08-12 11:49                   ` Martin Liška
2019-08-12 12:27                     ` Richard Biener
2019-08-12 12:43                       ` Martin Liška
2019-08-12 13:26                         ` Richard Biener
2019-08-12 14:48                           ` Martin Liška
2019-08-14 13:17                             ` Richard Biener
2019-08-14 13:50                               ` Martin Liška
2019-08-14 14:38                                 ` Richard Biener
2019-08-16 11:06                                   ` Martin Liška
2019-09-18  7:56                                     ` Martin Liška
2019-09-19 11:30                                       ` Richard Biener
2019-08-12 13:40                     ` Michael Matz
2019-08-09 11:48                 ` Richard Biener
2019-08-06 15:43               ` [PATCH 9/9] Remove alias set comparison Martin Liska
2019-08-07 15:58                 ` Martin Sebor
2019-08-08  8:43                   ` Martin Liška
2019-08-08 15:21                     ` Martin Sebor
2019-08-08 14:44                 ` Jeff Law
2019-08-06 15:43               ` [PATCH 6/9] Integrate that for IPA ICF Martin Liska
2019-08-16 11:10                 ` Martin Liška
2019-08-06 15:43               ` [PATCH 8/9] Remove comparison for polymorphic types Martin Liska
2019-08-06 15:43               ` [PATCH 4/9] Strengthen alias_ptr_types_compatible_p in LTO mode Martin Liska
2019-08-07 12:05                 ` Richard Biener
2019-08-08 12:09                   ` Martin Liška
2019-08-09 11:20                     ` Richard Biener
2019-08-06 15:43               ` [PATCH 2/9] operand_equal_p: add support for FIELD_DECL Martin Liska
2019-08-07 12:21                 ` Richard Biener
2019-08-15 14:19                   ` Jan Hubicka
2019-08-16  9:28                     ` Richard Biener
2019-08-16 12:17                       ` Jan Hubicka
2019-09-11 12:58                         ` Martin Liška
2019-08-06 15:43               ` [PATCH 1/9] Replace int with boolean in predicate functions Martin Liska
2019-08-07 12:38                 ` Richard Biener
2019-08-06 15:55               ` [PATCH 3/9] operand_equal_p: add support for OBJ_TYPE_REF Martin Liska
2019-08-07 12:09                 ` Richard Biener
2019-08-15 15:44                   ` Jan Hubicka
2019-08-16  9:25                     ` Richard Biener
2019-08-16 12:11                       ` Jan Hubicka
2019-08-19 14:03                         ` Richard Biener
2019-08-19 15:12                           ` Jan Hubicka
2019-08-20 14:29                             ` Richard Biener
2019-08-20 14:42                               ` Jan Hubicka
2019-09-13 12:30                               ` Martin Liška
2019-09-16  6:45                                 ` Richard Biener
2019-08-16 11:53               ` [PATCH 10/N] Use const_tree more in IPA ICF Martin Liška
2019-08-19 13:57                 ` Richard Biener
2019-10-30 11:54               ` [PATCH 0/9] IPA ICF overhaul Martin Liška

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