Re: [Qemu-devel] [PATCH] target-tilegx: Let prefetch nop instructions return before allocating dest temporary register

[Richard Henderson]

On 10/09/2015 09:48 AM, Chen Gang wrote:
> On 10/7/15 18:17, Chen Gang wrote:
> > On 10/7/15 17:19, Richard Henderson wrote:
> > > On 10/04/2015 10:15 PM, Chen Gang wrote:
> > > > >  From 40ec3f1c75b4c97e3e0495c9e465be898f48a652 Mon Sep 17 00:00:00 2001
> > > > From: Chen Gang<address@hidden>
> > > > Date: Sun, 4 Oct 2015 17:34:17 +0800
> > > > Subject: [PATCH] target-tilegx: Let prefetch nop instructions return before 
> > > > allocating dest temporary register
> > > >
> > > > Or it will cause issue by the dest temporary registers.
> > > >
> > > > Signed-off-by: Chen Gang<address@hidden>
> > > > ---
> > > > target-tilegx/translate.c | 85 +++++++++++++++++++++++++----------------------
> > > > 1 file changed, 46 insertions(+), 39 deletions(-)
> > >
> > > Isn't my patch 14/14 from the last patch set sufficient?
>
> At present, all patches (include 14/14) are integrated into master tree,
> so I guess, we have to integrate this patch into master tree next, it
> fix the dest temporary registers' issue.

What issue?  The prefetch instructions "load" to the zero register,
which is never written back to the register file.


r~