This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug rtl-optimization/19078] [4.0 Regression] Poor quality code after loop unrolling.
- From: "kenner at vlsi1 dot ultra dot nyu dot edu" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 10 Feb 2005 18:12:35 -0000
- Subject: [Bug rtl-optimization/19078] [4.0 Regression] Poor quality code after loop unrolling.
- References: <20041219105831.19078.chris@bubblescope.net>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From kenner at vlsi1 dot ultra dot nyu dot edu 2005-02-10 18:12 -------
Subject: Re: [4.0 Regression] Poor quality code after loop unrolling.
It's been about a decade since I looked at cse vs autoincrements, so
the details have faded from memory. [The original context I found the
problem was in an attempt to run cse after reload. ]
My recollection is that we never used to allow autoincrements before CSE
with the exception of autoinc on SP.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19078