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] Fix handling of ZERO_EXTRACT lhs with REG_EQUAL note in the combiner (PR target/69442)

From: Bernd Schmidt <bschmidt at redhat dot com>
To: Jakub Jelinek <jakub at redhat dot com>, Segher Boessenkool <segher at kernel dot crashing dot org>, Jeff Law <law at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org, Kugan Vivekanandarajah <kuganv at linaro dot org>
Date: Tue, 26 Jan 2016 11:23:25 +0100
Subject: Re: [PATCH] Fix handling of ZERO_EXTRACT lhs with REG_EQUAL note in the combiner (PR target/69442)
Authentication-results: sourceware.org; auth=none
References: <20160126083929 dot GR3017 at tucnak dot redhat dot com>

On 01/26/2016 09:39 AM, Jakub Jelinek wrote:


	PR target/69442
	* combine.c (combine_instructions): For REG_EQUAL note with
	SET_DEST being ZERO_EXTRACT, also temporarily set SET_DEST
	to the underlying register.
	* doc/rtl.texi (REG_EQUAL): Document the behavior of
	REG_EQUAL/REG_EQUIV notes if SET_DEST is ZERO_EXTRACT.

	* gcc.dg/pr69442.c: New test.


Ok.


Bernd

References:
- [PATCH] Fix handling of ZERO_EXTRACT lhs with REG_EQUAL note in the combiner (PR target/69442)
  - From: Jakub Jelinek

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