From: "Blue Swirl" <blauwirbel@gmail.com>
To: "Andreas Färber" <andreas.faerber@web.de>
Cc: qemu-devel@nongnu.org, Aurelien Jarno <aurelien@aurel32.net>
Subject: Re: [Qemu-devel] [PATCH 2/2] ppc: Convert op_andi to TCG
Date: Sun, 14 Sep 2008 14:53:37 +0300 [thread overview]
Message-ID: <f43fc5580809140453kba71efar20d4a00a90d3bc26@mail.gmail.com> (raw)
In-Reply-To: <EFBB37FA-C74A-464A-896F-237D846E197A@web.de>
On 9/14/08, Andreas Färber <andreas.faerber@web.de> wrote:
>
> Am 14.09.2008 um 13:35 schrieb Blue Swirl:
>
>
>
> > On 9/14/08, Andreas Färber <andreas.faerber@web.de> wrote:
> >
> > > Replace op_andi_... with tcg_gen_andi_tl.
> > >
> >
> >
> > > GEN_HANDLER2(andi_, "andi.", 0x1C, 0xFF, 0xFF, 0x00000000, PPC_INTEGER)
> > > {
> > > tcg_gen_mov_tl(cpu_T[0], cpu_gpr[rS(ctx->opcode)]);
> > > - gen_op_andi_T0(UIMM(ctx->opcode));
> > > + tcg_gen_andi_tl(cpu_T[0], cpu_T[0], UIMM(ctx->opcode));
> > > tcg_gen_mov_tl(cpu_gpr[rA(ctx->opcode)], cpu_T[0]);
> > > gen_set_Rc0(ctx);
> > > }
> > >
> >
> > Small comment: this would be more optimally:
> > tcg_gen_andi_tl(cpu_gpr[rA(ctx->opcode)],
> > cpu_gpr[rS(ctx->opcode)], UIMM(ctx->opcode));
> >
> > The same applies to andis.
> >
>
> Careful there, iirc this cannot be done before gen_set_Rc0 is converted!
I didn't mean to remove gen_set_Rc0, the comment only applied to the
mov+andi+mov sequence.
next prev parent reply other threads:[~2008-09-14 11:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-14 11:06 [Qemu-devel] [PATCH 1/2] ppc: Convert ctr, lr moves to TCG Andreas Färber
2008-09-14 11:23 ` [Qemu-devel] [PATCH 2/2] ppc: Convert op_andi " Andreas Färber
2008-09-14 11:35 ` Blue Swirl
2008-09-14 11:48 ` Andreas Färber
2008-09-14 11:53 ` Blue Swirl [this message]
2008-09-14 12:02 ` Andreas Färber
2008-09-14 12:03 ` Paul Brook
2008-09-14 12:13 ` Blue Swirl
2008-09-14 18:34 ` Aurelien Jarno
2008-09-14 18:30 ` [Qemu-devel] [PATCH 1/2] ppc: Convert ctr, lr moves " Aurelien Jarno
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