optimization/6798: [3.2/3.3/3.4 regression] very long compile time with large case-statement

[Volker Reichelt]

The following reply was made to PR optimization/6798; it has been noted by GNATS.

From: Volker Reichelt <reichelt@igpm.rwth-aachen.de>
To: s.bosscher@student.tudelft.nl, gcc-gnats@gcc.gnu.org, gcc-bugs@gcc.gnu.org,
 eggert@twinsun.com
Cc: bangerth@ticam.utexas.edu
Subject: Re: optimization/6798: [3.2/3.3/3.4 regression] very long compile time
 with large case-statement
Date: Wed, 12 Mar 2003 13:07:05 +0100 (CET)

 On 11 Mar, Steven Bosscher wrote:
 > http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=6798
 > 
 > Volker, you said you saw this on Linux?  I don't see this bug on 
 > i586-linux,
 > so I hope you can confirm this so we can close this PR, or else we 
 > should try
 > to find out if this is a target-specific problem.
 > 
 > Greetz
 > Steven
 
 Sorry, but that was Wolfgang and not me (I just put the code into an
 attachment):
 
 | State-Changed-From-To: feedback->open
 | State-Changed-By: reichelt
 | State-Changed-When: Wed Jan 15 02:18:06 2003
 | State-Changed-Why:
 |     Attachment received.
 | State-Changed-From-To: open->analyzed
 | State-Changed-By: bangerth
 | State-Changed-When: Wed Jan 15 08:27:38 2003
 | State-Changed-Why:
 |     I can also reproduce this on a Linux machine. The testcase
 |     is basically an enormous yacc-generated switch-statement, 
 |     with about 2000 cases and a lot of cross-jumping. I killed
 |    the compilation after about 10 minutes.
 
 Regards,
 Volker