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 DSE with nop or maybe nop assignments (PR c++/34459)

From: Diego Novillo <dnovillo at google dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: gcc-patches at gcc dot gnu dot org
Date: Thu, 20 Dec 2007 08:00:19 -0500
Subject: Re: [PATCH] Fix DSE with nop or maybe nop assignments (PR c++/34459)
References: <20071220000244.GY20451@devserv.devel.redhat.com>

On 12/19/07 19:02, Jakub Jelinek wrote:

	PR c++/34459
	* tree-ssa-dse.c (dse_optimize_stmt): Don't eliminate store if
	USE_STMT not only stores into the same object as STMT, but might
	read it too.

* gcc.c-torture/execute/20071219-1.c: New test.

OK. DSE needs to be rewritten.

Diego.

Follow-Ups:
- Re: [PATCH] Fix DSE with nop or maybe nop assignments (PR c++/34459)
  - From: Daniel Berlin

References:
- [PATCH] Fix DSE with nop or maybe nop assignments (PR c++/34459)
  - From: Jakub Jelinek

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