[Bug middle-end/55545] New: [4.8 Regression] Incredibly large compile-time performance regression on IA64 compiling 253.perlbmk

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55545

             Bug #: 55545
           Summary: [4.8 Regression] Incredibly large compile-time
                    performance regression on IA64 compiling 253.perlbmk
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: rguenth@gcc.gnu.org
            Target: ia64-*-linux


compiling SPEC 2000 253.perlbmk:

cpu2000/result/log.17027:  Elapsed compile for '253.perlbmk': 00:00:17 (17)
cpu2000/result/log.17031:  Elapsed compile for '253.perlbmk': 00:00:14 (14)
cpu2000/result/log.17031:  Elapsed compile for '253.perlbmk': 00:00:45 (45)
cpu2000/result/log.17035:  Elapsed compile for '253.perlbmk': 00:00:15 (15)
cpu2000/result/log.17035:  Elapsed compile for '253.perlbmk': 00:00:17 (17)
cpu2000/result/log.17039:  Elapsed compile for '253.perlbmk': 00:00:14 (14)
cpu2000/result/log.17039:  Elapsed compile for '253.perlbmk': 00:00:44 (44)
cpu2000/result/log.17043:  Elapsed compile for '253.perlbmk': 03:00:02 (10802)
cpu2000/result/log.17043:  Elapsed compile for '253.perlbmk': 03:00:04 (10804)
cpu2000/result/log.17047:  Elapsed compile for '253.perlbmk': 03:00:02 (10802)
cpu2000/result/log.17047:  Elapsed compile for '253.perlbmk': 03:00:22 (10822)

> ls -l cpu2000/result/log.17039   
-rw-rw-r-- 1 gcctest suse 747601 Nov 14 10:26 cpu2000/result/log.17039
> ls -l cpu2000/result/log.17043
-rw-rw-r-- 1 gcctest suse 558857 Nov 16 03:18 cpu2000/result/log.17043