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[Bug target/49349] New: gfortran.dg/char_result_3.f90 fails with -O3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49349

           Summary: gfortran.dg/char_result_3.f90 fails with -O3
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sje@cup.hp.com
                CC: tom@codesourcery.com
            Target: ia64-hp-hpux11*


Compiling gfortran.dg/char_result_3.f90 on IA64 HP-UX with the -O3 option
results in:

$ obj_gcc/gcc/f951 -O3 -quiet char_result_3.f90
char_result_3.f90: In function 'f4':
char_result_3.f90:71:0: internal compiler error: in bundling, at
config/ia64/ia6
4.c:8845

The failure started with r173853.

2011-05-18  Tom de Vries  <tom@codesourcery.com>

        PR target/45098
        * tree-ssa-loop-ivopts.c (seq_cost): Fix call to rtx_cost

This only happens in 32 bit mode so I can't reproduce it on IA64 Linux.

If I turn off selective scheduling (-fno-selective-scheduling or
-fno-selective-scheduling2) it goes away.  I don't know if the bug is in the
scheduling or in this fix to PR 45098.


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