This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Destructive comparison

From: Michael Hope <michaelh at juju dot net dot nz>
To: Jim Wilson <wilson at codesourcery dot com>
Cc: gcc at gcc dot gnu dot org
Date: Tue, 19 May 2009 07:02:39 +1200
Subject: Re: Destructive comparison
References: <31d002d40905170209v5fedd93cvec67d5e9a72c9f17@mail.gmail.com> <4A103C46.7060503@codesourcery.com> <31d002d40905180058g4391c71fo8c66119e20300936@mail.gmail.com> <1242660806.3261.9.camel@localhost.localdomain>

Yip, picked that up after I sent it.  Thanks.

2009/5/19 Jim Wilson <wilson@codesourcery.com>:
> On Mon, 2009-05-18 at 19:58 +1200, Michael Hope wrote:
>> ? (set (match_operand:SI 3 "register_operand" "=1")
>> ? ? ? (not:SI (xor:SI (match_dup 1) (match_dup 2))))]
>
> not xor is aka xnor. ?You probably want this without the two "not"
> operations.
>
> Jim
>
>
>

References:
- Destructive comparison
  - From: Michael Hope
- Re: Destructive comparison
  - From: Jim Wilson
- Re: Destructive comparison
  - From: Michael Hope
- Re: Destructive comparison
  - From: Jim Wilson

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]