From: James Greenhalgh <james.greenhalgh@arm.com>
To: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>, nd <nd@arm.com>
Subject: Re: [PATCH][AArch64] Emit SIMD moves as mov
Date: Tue, 20 Jun 2017 11:15:00 -0000 [thread overview]
Message-ID: <20170620111506.GB33842@arm.com> (raw)
In-Reply-To: <AM5PR0802MB261082CF3D6C49188B4ABE8683C50@AM5PR0802MB2610.eurprd08.prod.outlook.com>
On Tue, Jun 20, 2017 at 12:06:29PM +0100, Wilco Dijkstra wrote:
> SIMD moves are currently emitted as ORR. Change this to use the MOV
> pseudo instruction just like integer moves (the ARM-ARM states MOV is the
> preferred disassembly), improving readability of -S output.
>
> Passes bootstrap, OK for commit?
Does this introduce a dependency on a particular binutils version, or have
we always supported this alias?
The patch looks OK, but I don't want to introduce a new dependency so please
check how far back this is supported.
Thanks,
James
>
> ChangeLog:
> 2017-06-20 Wilco Dijkstra <wdijkstr@arm.com>
>
> * config/aarch64/aarch64.md (movti_aarch64):
> Emit mov rather than orr.
> (movtf_aarch64): Likewise.
> * config/aarch64/aarch64-simd.md (aarch64_simd_mov):
> Emit mov rather than orr.
> --
next prev parent reply other threads:[~2017-06-20 11:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-20 11:06 Wilco Dijkstra
2017-06-20 11:15 ` James Greenhalgh [this message]
2017-06-20 11:48 ` Wilco Dijkstra
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