From: Ian Lance Taylor <iant@google.com>
To: "venkat" <venkat@acmet.com>
Cc: <gcc-help@gcc.gnu.org>
Subject: Re: Specifying explicit parallel to define_insn of a named pattern.
Date: Fri, 27 Mar 2009 16:35:00 -0000 [thread overview]
Message-ID: <m3tz5ex6tg.fsf@google.com> (raw)
In-Reply-To: <B0C41DDD9BA048728AA8BD39CDCAFC18@KVENKAT> (venkat@acmet.com's message of "Fri\, 27 Mar 2009 12\:14\:18 +0530")
"venkat" <venkat@acmet.com> writes:
> (define_insn_and_split "<div_mod_optab_name>si3"
> [(parallel[ <== *(1)
> (set (match_operand:SI 0 "register_operand")
> (any_div_op:SI (match_operand:SI 1 "register_operand")
> (match_operand:SI 2 "register_operand")))
> (clobber (reg:SI LO_REG_NUM))
> (clobber (reg:SI HI_REG_NUM))
> ])
> ]
There is an implicit parallel in define_insn_and_split. Don't add your
own. I quote the documentation:
If the vector has only one element, that element is the template for
the instruction pattern. If the vector has multiple elements, then
the instruction pattern is a @code{parallel} expression containing
the elements described.
Ian
next prev parent reply other threads:[~2009-03-27 16:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-27 6:44 venkat
2009-03-27 16:35 ` Ian Lance Taylor [this message]
[not found] <7238340b0903302236o14f0b740y7fb3178d41050fd6@mail.gmail.com>
2009-03-31 5:48 ` Ian Lance Taylor
2009-03-31 5:48 ganesh gopalasubramanian
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