This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: [PATCH 04/25] SPECIAL_REGNO_P

From: Andrew Stubbs <ams at codesourcery dot com>
To: Richard Henderson <rth at twiddle dot net>, <gcc-patches at gcc dot gnu dot org>
Date: Wed, 12 Sep 2018 17:14:18 +0100
Subject: Re: [PATCH 04/25] SPECIAL_REGNO_P
References: <cover.1536144068.git.ams@codesourcery.com> <a02c39933eaad0ade4276dd9b55f6fc6ab1954ce.1536144068.git.ams@codesourcery.com> <f78def38-5e04-e357-0a4e-5c77a9946625@twiddle.net>

On 12/09/18 16:31, Richard Henderson wrote:

How is this different from HARD_REGNO_RENAME_OK via the TO argument?
Seems like the hook you're looking for already exists...

I don't know how we got here (I didn't do the original work), but theSPECIAL_REGNO_P was indeed used in HARD_REGNO_RENAME_OK, as well as insome extra places in regrename.

This definitely was necessary at some point, but I've not yet reproducedthe issue in the current code-base, so I suspect you may be correct.


Andrew

References:
- [PATCH 00/25] AMD GCN Port
  - From: ams
- [PATCH 04/25] SPECIAL_REGNO_P
  - From: ams
- Re: [PATCH 04/25] SPECIAL_REGNO_P
  - From: Richard Henderson

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]