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From: "janis at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/33648]  New: ICE in verify_flow_info for -fmodulo-sched -freorder-blocks-and-partition
Date: Wed, 03 Oct 2007 20:45:00 -0000	[thread overview]
Message-ID: <bug-33648-4503@http.gcc.gnu.org/bugzilla/> (raw)

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Most benchmarks in SPEC CPU2000 fail to compile with an ICE when compiled with
"-O2 -fmodulo-sched -freorder-blocks-and-partition" for powerpc* and s390*
targets.  Compiling the following minimized testcase:

unsigned res;
void
foo (unsigned code, int len)
{
  int i;
  for (i = 0; i < len; i++)
      res |= code & 1;
}

gives the output:

bug.c: In function ‘foo’:
bug.c:8: error: fallthru edge crosses section boundary (bb 9)
bug.c:8: error: fallthru edge crosses section boundary (bb 7)
bug.c:8: error: fallthru edge crosses section boundary (bb 13)
bug.c:8: error: fallthru edge crosses section boundary (bb 12)
bug.c:8: error: fallthru edge crosses section boundary (bb 3)
bug.c:8: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

The failure starts with this patch:

    http://gcc.gnu.org/viewcvs?view=rev&rev=127293

    r127293 | revitale | 2007-08-08 12:21:37 +0000 (Wed, 08 Aug 2007)


-- 
           Summary: ICE in verify_flow_info for -fmodulo-sched -freorder-
                    blocks-and-partition
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33648


             reply	other threads:[~2007-10-03 20:45 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-03 20:45 janis at gcc dot gnu dot org [this message]
2007-10-04 23:19 ` [Bug rtl-optimization/33648] [4.3 Regression] " pinskia at gcc dot gnu dot org
2007-10-06  0:12 ` janis at gcc dot gnu dot org
2007-10-10 18:10 ` mmitchel at gcc dot gnu dot org
2007-11-01 19:39 ` jakub at gcc dot gnu dot org
2007-11-01 23:27 ` jakub at gcc dot gnu dot org
2007-11-01 23:28 ` jakub at gcc dot gnu dot org
2007-11-05 21:55 ` jakub at gcc dot gnu dot org

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