Thanks Vlad.

I noticed there is devel/subreg-coalesce branch.

We are working on supporting subreg coalesce in IRA/LRA base on the latest version of subreg DF patch.

And we will send the followup patches.

Thanks.


juzhe.zhong@rivai.ai
 
From: Vladimir Makarov
Date: 2024-05-09 00:29
To: Lehua Ding
CC: richard.sandiford; juzhe.zhong; gcc-patches
Subject: Re: [PATCH 4/4] lra: Apply DF_LIVE_SUBREG data
 
On 5/7/24 23:01, Lehua Ding wrote:
> Hi Vladimir,
>
> I'll send V3 patchs based on these comments. Note that these four 
> patches only support subreg liveness tracking and apply to IRA and LRA 
> pass. Therefore, no performance changes are expected before we support 
> subreg coalesce. There will be new patches later to complete the 
> subreg coalesce functionality. Support for subreg coalesce requires 
> support for subreg copy i.e. modifying the logic for conflict detection.
>
>
Thank you for your clarification that the current batch of patches does 
not change the performance.  I hope the next batch of patches will be 
added to devel/subreg-coalesce branch too for their easier evaluation.