From mboxrd@z Thu Jan  1 00:00:00 1970
From: snyder@fnal.gov
To: gcc-gnats@gcc.gnu.org
Subject: optimization/2692: excessive compile time with optimization
Date: Sun, 29 Apr 2001 21:06:00 -0000
Message-id: <200104300404.f3U44Pc01933@karma.fnal.gov>
X-SW-Source: 2001-04/msg00737.html
List-Id: <gcc-prs.sourceware.org>

>Number:         2692
>Category:       optimization
>Synopsis:       excessive compile time with optimization
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 29 21:06:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     scott snyder
>Release:        3.0 20010429 (prerelease)
>Organization:
>Environment:
System: Linux karma 2.2.16-22 #1 Tue Aug 22 16:49:06 EDT 2000 i686 unknown
Architecture: i686

	
host: i686-pc-linux-gnu
build: i686-pc-linux-gnu
target: i686-pc-linux-gnu
configured with: ../egcs/configure --prefix=/usr/local/egcs --enable-threads=posix --enable-long-long
>Description:

If i try to compile the source below with -O2, gcc runs for over 45 minutes
and grows to over 300 MB.  On my machine, it exhausts the available
swap space and dies before completing.

Without optimization, it completes in a couple minutes.

gcc 2.95.2 dies immediately with an ICE on this source, regardless
of whether or not optimization is on, so i guess this isn't a regression.

>How-To-Repeat:
	
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: