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Date: Wed, 3 Sep 2008 13:28:40 +0200
From: Thiemo Seufer <ths@networkno.de>
Subject: Re: [Qemu-devel] [PATCH 5/x] ppc: Convert op_load_gpr_{T0, T1, T2}
	to TCG
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To: Andreas =?iso-8859-1?Q?F=E4rber?= <andreas.faerber@web.de>
Cc: qemu-devel@nongnu.org, =?iso-8859-1?Q?Aur=E9lien?= Jarno <aurelien@aurel32.net>

Andreas F=E4rber wrote:
[snip]
> Would there be a problem with using i64 in the 32-on-64 case? That is, =
=20
> would it hurt to do i32 TCG operations on i64 variables on a 64-bit =20
> host?

I did that accidentially for the mips target and got hard to debug
segfaults. I believe TCG requires ops and registers to have the
same type, abart from explicit conversion functions.

Another problem might be sign/zero extensions.


Thiemo