From: coxs@dg-rtp.dg.com <coxs@dg-rtp.dg.com>
To: egcs@cygnus.com
Subject: Re: double alignment patch for x86
Date: Mon, 18 Aug 1997 20:46:06 -0000 [thread overview]
Message-ID: <199708182044.UAA01478@equinox> (raw)
In-Reply-To: 5798.871854450@hurl.cygnus.com
I see how the changes will preserve alignment, but what if
the initial alignment is not double aligned?
My preference would be verb-object options, e.g. -malign-stack-double,
-malign-args-double. The Intel compiler defaults to aligning the
stack double if the function uses doubles since this doesn't break the ABI.
What about using #define constants instead of 0 and 1 in the
ix86_sp_offset call?
Is there need for the % calculation in ix86_sp_offset, can't you just
check for offset = 4, 8, or 12 and simplify this routine since the x86
preserves at most 3 registers (edi, esi, ebx)?
next reply other threads:[~1997-08-18 20:46 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-08-18 20:46 coxs [this message]
-- strict thread matches above, loose matches on Subject: below --
1997-08-19 3:24 meissner
1997-08-19 3:52 ` Jeffrey A Law
1997-08-19 2:36 2 (small?) problems Ian Lance Taylor
1997-08-19 3:24 ` double alignment patch for x86 Jeffrey A Law
1997-08-18 20:47 meissner
1997-08-18 14:53 Monday morning Philippe Laliberte
1997-08-18 15:11 ` double alignment patch for x86 Dave Love
1997-08-17 21:48 Jeffrey A Law
1997-08-17 19:41 John Carr
1997-08-17 19:41 Marc Lehmann
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