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From: Richard Biener <richard.guenther@gmail.com>
To: Eric Botcazou <ebotcazou@adacore.com>
Cc: gcc-patches@gcc.gnu.org,Jan Hubicka <hubicka@ucw.cz>
Subject: Re: Add VIEW_CONVERT_EXPR to operand_equal_p
Date: Sat, 17 Oct 2015 15:17:00 -0000	[thread overview]
Message-ID: <6561C1C3-366A-411C-BAEE-65E1C233BA16@gmail.com> (raw)
In-Reply-To: <6178124.DYpozsCQOi@polaris>

On October 17, 2015 11:26:43 AM GMT+02:00, Eric Botcazou <ebotcazou@adacore.com> wrote:
>> Well, it would (I think) ICE on assigning a packed variant to a
>non-packed
>> variant of a strict that happens to get a non-BLKmode when not
>packed.
>
>Is "it" GIMPLE here?  My sentence was not very clear, I meant that I
>don't see 
>why GIMPLE would have to care about whether there is a VCE or not in
>the IL.

Huh, I thought your question was about the mode check in useless_type_conversion_p.

>And AFAIK nobody answered the question: what do we gain by making this
>change?
>So far I have only seen breakages, suspicious fixes and code
>duplication...

Honza wants the structural equality predicate (operand_equal_p) complete (optimistically) for GIMPLE.

Richard.


  reply	other threads:[~2015-10-17 10:27 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-10-14 16:29 Jan Hubicka
2015-10-15  8:39 ` Richard Biener
2015-10-15 11:22   ` Eric Botcazou
2015-10-15 19:47     ` Eric Botcazou
2015-10-15 23:24       ` Jan Hubicka
2015-10-16 15:58         ` Eric Botcazou
2015-10-16 21:47           ` Richard Biener
2015-10-17 10:27             ` Eric Botcazou
2015-10-17 15:17               ` Richard Biener [this message]
2015-10-17 18:57                 ` Jan Hubicka
2015-10-18 12:57                   ` Eric Botcazou
2015-10-18 16:37                     ` Jan Hubicka
2015-10-18 17:14                       ` Richard Biener
2015-10-18 18:45                         ` Jan Hubicka
2015-10-19 12:31                           ` Richard Biener
2015-10-19 21:01                             ` Jan Hubicka
2015-10-19  8:17                         ` Eric Botcazou
2015-10-19  7:58                       ` Eric Botcazou
2015-10-19 19:46                         ` Jan Hubicka
2015-10-20  7:02                           ` Eric Botcazou
2015-10-21 22:22                             ` Jan Hubicka
2015-10-22  8:52                               ` Andreas Schwab
2015-10-28 22:49                               ` Eric Botcazou
2015-10-29  4:35                                 ` Jan Hubicka
2015-10-29 11:31                                   ` Richard Biener
2015-10-29 11:32                                     ` Richard Biener
2015-10-29 11:32                                       ` Richard Biener
2015-11-04  8:51                                       ` Eric Botcazou
2015-10-29 15:06                                     ` Jan Hubicka
2015-10-29 15:24                                       ` Richard Biener
2015-10-29 15:53                                         ` Jan Hubicka
2015-10-30  8:57                                           ` Richard Biener
2015-10-30 15:28                                             ` Jan Hubicka
2015-11-02  9:55                                               ` Richard Biener
2015-10-30  9:56                                       ` Eric Botcazou
2015-10-30 15:19                                         ` Jan Hubicka
2015-10-31 17:39                                           ` Eric Botcazou
2015-10-31 17:58                                             ` Richard Biener
2015-11-03 10:26                                               ` Eric Botcazou
2015-11-03 11:39                                                 ` Richard Biener
2015-11-02  9:30                                             ` Andreas Schwab
2015-11-03  8:43                                               ` Eric Botcazou
2015-11-04  7:23                                                 ` Jan Hubicka
2015-11-04  8:20                                                   ` Eric Botcazou
2015-11-04 16:50                                                     ` Jan Hubicka
2015-11-05 13:49                                                       ` Richard Biener
2015-10-21  4:42                           ` Jan Hubicka
2015-10-21  8:54                             ` Richard Biener
2015-10-21 11:24                             ` Eric Botcazou
2015-10-23  5:22                             ` Jan Hubicka
2015-10-23  9:14                               ` Richard Biener
2015-10-15 16:59   ` Jan Hubicka

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