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Re: [Revert][AArch64] PR 63521 Define REG_ALLOC_ORDER/HONOR_REG_ALLOC_ORDER
- From: Andrew Pinski <pinskia at gmail dot com>
- To: Jiong Wang <jiong dot wang at arm dot com>
- Cc: James Greenhalgh <james dot greenhalgh at arm dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
- Date: Sat, 25 Jul 2015 12:44:30 -0700
- Subject: Re: [Revert][AArch64] PR 63521 Define REG_ALLOC_ORDER/HONOR_REG_ALLOC_ORDER
- Authentication-results: sourceware.org; auth=none
- References: <n998ucjwgk1 dot fsf at arm dot com> <20150722112203 dot GA17314 at arm dot com> <n99wpxpgbww dot fsf at arm dot com>
On Fri, Jul 24, 2015 at 2:07 AM, Jiong Wang <jiong.wang@arm.com> wrote:
>
> James Greenhalgh writes:
>
>> On Wed, May 20, 2015 at 01:35:41PM +0100, Jiong Wang wrote:
>>> Current IRA still use both target macros in a few places.
>>>
>>> Tell IRA to use the order we defined rather than with it's own cost
>>> calculation. Allocate caller saved first, then callee saved.
>>>
>>> This is especially useful for LR/x30, as it's free to allocate and is
>>> pure caller saved when used in leaf function.
>>>
>>> Haven't noticed significant impact on benchmarks, but by grepping some
>>> keywords like "Spilling", "Push.*spill" etc in ira rtl dump, the number
>>> is smaller.
>>>
>>> OK for trunk?
>>
>> OK, sorry for the delay.
>>
>> It might be mail client mangling, but please check that the trailing slashes
>> line up in the version that gets committed.
>>
>> Thanks,
>> James
>>
>>> 2015-05-19 Jiong. Wang <jiong.wang@arm.com>
>>>
>>> gcc/
>>> PR 63521
>>> * config/aarch64/aarch64.h (REG_ALLOC_ORDER): Define.
>>> (HONOR_REG_ALLOC_ORDER): Define.
>
> Patch reverted.
I did not see a reason why this patch was reverted. Maybe I am
missing an email or something.
Thanks,
Andrew
>