This is the mail archive of the gcc@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]

doloop-opt deficiency

From: Dale Johannesen <dalej at apple dot com>
To: gcc mailing list <gcc at gcc dot gnu dot org>
Cc: Sebastian Pop <sebastian dot pop at cri dot ensmp dot fr>
Date: Mon, 29 Aug 2005 16:41:07 -0700
Subject: doloop-opt deficiency

We noticed that the simple loop here

Attachment: try.c
Description: Text document

was being treated as ineligible for the doloop modification. I think this is a simple pasto; this code was evidently copied from the previous block:

Attachment: diffs6.txt
Description: Text document

The code as it was computed -2147483648-256 which overflows.
Still testing, but is there anything obvious wrong with this?

Follow-Ups:
- Re: doloop-opt deficiency
  - From: Sebastian Pop

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