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] Improve folding of bitwise ops feeding conditionals for single bit types

From: Jeff Law <law at redhat dot com>
To: Andreas Schwab <schwab at suse dot de>
Cc: gcc-patches <gcc-patches at gcc dot gnu dot org>
Date: Thu, 20 Jun 2013 06:52:56 -0600
Subject: Re: [PATCH] Improve folding of bitwise ops feeding conditionals for single bit types
References: <51C12EC5 dot 709 at redhat dot com> <mvmwqppqcp4 dot fsf at hawking dot suse dot de>

On 06/20/2013 04:49 AM, Andreas Schwab wrote:

Jeff Law <law@redhat.com> writes:

+/* { dg-final { scan-tree-dump-times "Replaced" 8 "forwprop1"} } */


$ grep -c Replaced forwprop-28.c.022t.forwprop1
16

;; Function test (test, funcdef_no=0, decl_uid=1388, symbol_order=0)

   Replaced 'rotate_7 == 0' with '_6 == 0'
   Replaced '_6 == 0' with 'code_5(D) != 22'

Target?

Give me enough information and I'll gladly take a look. Give me junkand I'll ignore.


jeff

References:
- [PATCH] Improve folding of bitwise ops feeding conditionals for single bit types
  - From: Jeff Law
- Re: [PATCH] Improve folding of bitwise ops feeding conditionals for single bit types
  - From: Andreas Schwab

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