From: Jeff Law <jeffreyalaw@gmail.com>
To: gcc-patches@gcc.gnu.org, jlaw@ventanamicro.com,
richard.sandiford@arm.com
Subject: Re: [PATCH 08/12] mode-switching: Pass set of live registers to the needed hook
Date: Mon, 6 Nov 2023 18:11:52 -0700 [thread overview]
Message-ID: <1926bc18-f0ae-4b00-b0dd-f7bea71051ec@gmail.com> (raw)
In-Reply-To: <mptsf5k6nos.fsf@arm.com>
On 11/5/23 11:48, Richard Sandiford wrote:
> The emit hook already takes the set of live hard registers as input.
> This patch passes it to the needed hook too. SME uses this to
> optimise the mode choice based on whether state is live or dead.
>
> The main caller already had access to the required info, but the
> special handling of return values did not.
>
> gcc/
> * target.def (mode_switching.needed): Add a regs_live parameter.
> * doc/tm.texi: Regenerate.
> * config/epiphany/epiphany-protos.h (epiphany_mode_needed): Update
> accordingly.
> * config/epiphany/epiphany.cc (epiphany_mode_needed): Likewise.
> * config/epiphany/mode-switch-use.cc (insert_uses): Likewise.
> * config/i386/i386.cc (ix86_mode_needed): Likewise.
> * config/riscv/riscv.cc (riscv_mode_needed): Likewise.
> * config/sh/sh.cc (sh_mode_needed): Likewise.
> * mode-switching.cc (optimize_mode_switching): Likewise.
> (create_pre_exit): Likewise, using the DF simulate functions
> to calculate the required information.
We should probably deprecate the epiphany port. It's been too flakey to
test for years at this point. But anyway....
OK for the trunk.
jeff
next prev parent reply other threads:[~2023-11-07 1:11 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-05 18:45 [PATCH 00/12] Tweaks and extensions to the mode-switching pass Richard Sandiford
2023-11-05 18:46 ` [PATCH 01/12] mode-switching: Tweak the macro/hook documentation Richard Sandiford
2023-11-07 0:10 ` Jeff Law
2023-11-05 18:46 ` [PATCH 02/12] mode-switching: Add note problem Richard Sandiford
2023-11-07 0:11 ` Jeff Law
2023-11-05 18:47 ` [PATCH 03/12] mode-switching: Avoid quadractic list operation Richard Sandiford
2023-11-07 0:47 ` Jeff Law
2023-11-05 18:47 ` [PATCH 04/12] mode-switching: Fix the mode passed to the emit hook Richard Sandiford
2023-11-07 0:51 ` Jeff Law
2023-11-05 18:47 ` [PATCH 05/12] mode-switching: Simplify recording of transparency Richard Sandiford
2023-11-07 0:52 ` Jeff Law
2023-11-05 18:48 ` [PATCH 06/12] mode-switching: Tweak entry/exit handling Richard Sandiford
2023-11-07 1:01 ` Jeff Law
2023-11-05 18:48 ` [PATCH 07/12] mode-switching: Allow targets to set the mode for EH handlers Richard Sandiford
2023-11-07 1:07 ` Jeff Law
2023-11-08 0:15 ` Richard Sandiford
2023-11-08 2:24 ` Jeff Law
2023-11-05 18:48 ` [PATCH 08/12] mode-switching: Pass set of live registers to the needed hook Richard Sandiford
2023-11-07 1:11 ` Jeff Law [this message]
2023-11-05 18:49 ` [PATCH 09/12] mode-switching: Pass the set of live registers to the after hook Richard Sandiford
2023-11-07 1:12 ` Jeff Law
2023-11-05 18:49 ` [PATCH 10/12] mode-switching: Use 1-based edge aux fields Richard Sandiford
2023-11-07 2:53 ` Jeff Law
2023-11-08 0:35 ` Richard Sandiford
2023-11-08 2:22 ` Jeff Law
2023-11-11 15:51 ` Richard Sandiford
2023-11-11 16:19 ` Jeff Law
2023-11-05 18:50 ` [PATCH 11/12] mode-switching: Add a target-configurable confluence operator Richard Sandiford
2023-11-07 3:04 ` Jeff Law
2023-11-11 15:54 ` Richard Sandiford
2023-11-11 16:19 ` Jeff Law
2023-11-11 17:29 ` Richard Sandiford
2023-11-05 18:50 ` [PATCH 12/12] mode-switching: Add a backprop hook Richard Sandiford
2023-11-10 1:18 ` Jeff Law
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