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From: "dlenski at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug inline-asm/37621] Missing documentation for x86 inline assembler modifiers
Date: Wed, 24 Sep 2008 17:44:00 -0000	[thread overview]
Message-ID: <20080924174305.29934.qmail@sourceware.org> (raw)
In-Reply-To: <bug-37621-16098@http.gcc.gnu.org/bugzilla/>



------- Comment #2 from dlenski at gmail dot com  2008-09-24 17:43 -------
Hi Andrew,
It seems to me that these modifiers are quite necessary for flexible x86
assembly.  What is the point of the "q" and "Q" constraints if there's no way
to specifically refer to the 16-bit or 8-bit components of the selected
register?

And are you sure there built-in functions to invoke the rol/ror/xhcg
instructions?  I don't see any in the 4.3 docs.

Dan


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37621


  parent reply	other threads:[~2008-09-24 17:44 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-23 12:14 [Bug inline-asm/37621] New: " n dot pipenbrinck at cubic dot org
2008-09-24  0:36 ` [Bug inline-asm/37621] " pinskia at gcc dot gnu dot org
2008-09-24 17:44 ` dlenski at gmail dot com [this message]
2008-09-24 22:43 ` n dot pipenbrinck at cubic dot org
     [not found] <bug-37621-4@http.gcc.gnu.org/bugzilla/>
2014-06-18 19:44 ` gerald at pfeifer dot com

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