From: Steve Ellcey <sje@cup.hp.com>
To: wilson@specifixinc.com, ebotcazou@adacore.com
Cc: gcc@gcc.gnu.org
Subject: Re: MEMBER_TYPE_FORCES_BLK on IA-64/HP-UX
Date: Sun, 03 Jul 2005 16:13:00 -0000 [thread overview]
Message-ID: <200507031613.JAA20867@hpsje.cup.hp.com> (raw)
In-Reply-To: <42C5C77D.1050604@specifixinc.com>
> Steve Ellcey defined MEMBER_TYPE_FORCES_BLK when he first implemented
> the ia64-hpux port. At the time, I mentioned using PARALLELs was a
> better solution, but this was a simpler way for him to get the initial
> port working. Since then, there have been a lot of bug fixes to the
> ia64-hpux support by various people: Steve, Zack, Joseph, etc. Looking
> at the current code, it does appear that all cases are now handled by
> PARALLELs, and that the definition of MEMBER_TYPE_FORCES_BLK no longer
> appears to be necessary.
>
> I don't have an ia64-hpux machine, so there is no easy way for me to
> test this change.
> --
> Jim Wilson, GNU Tools Support, http://www.SpecifixInc.com
I am concerned about the use of MEMBER_TYPE_FORCES_BLK in stor-layout.c.
I believe that, if MEMBER_TYPE_FORCES_BLK is not defined, this code will
change the mode of a structure containing a single field from BLKmode
into the mode of the field. I think this might mess up the parameter
passing of structures that contain a single field, particularly when
that field is smaller than 64 bits, like a single char, an int, or a
float. I would definitely want to check the parameter passing of small
single field structures before removing MEMBER_TYPE_FORCES_BLK on
ia64-hpux.
Steve Ellcey
sje@cup.hp.com
next prev parent reply other threads:[~2005-07-03 16:13 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-08 10:27 Eric Botcazou
2005-07-01 22:45 ` James E Wilson
2005-07-02 10:04 ` Eric Botcazou
2005-07-03 16:13 ` Steve Ellcey [this message]
2005-07-03 16:32 ` Eric Botcazou
2005-07-06 1:09 ` James E Wilson
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