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Re: [Qemu-devel] [PATCH 0/2] simplify global register save/restore

From: Paul Brook
Subject: Re: [Qemu-devel] [PATCH 0/2] simplify global register save/restore
Date: Fri, 26 Feb 2010 11:30:30 +0000
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> Since b567b38 (target-arm: remove T0 and T1, 2009-10-16) the only global
> register that is actually used is AREG0, so the complexity of
> hostregs_helper.h is unwarranted.
> Let's just say that env should be the only global register.  AREG1 and
> AREG2 in principle could still be used to work around bad register
> allocation in GCC, so I'm leaving them in dyngen-exec.h.

I think AREG[12] should be removed too. If we aren't saving them then they 
can't be safely used.


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