[Bug middle-end/33644] New: ICE in local_cprop_pass with -ftrapv for crafty

[janis at gcc dot gnu dot org]

Benchmark crafty from SPEC CPU2000 gets an ICE for 32-bit powerpc (linux, aix,
darwin, eabi) when compiled with -O2 -ftrapv, as shown by this minimized test:

extern char *bar (const char *);
int *m, *b;

void
foo (void)
{
  int *mv;
  int p;
  char a[17];

  p = bar (a) - a;
  for (mv = m; mv < b; mv++)
    if (p && ((*mv  & 7) != p))
      *mv=0;
}

which gives the following output when compiled with -O2 -ftrapv:

bug.c: In function ‘foo’:
bug.c:15: internal compiler error: in local_cprop_pass, at gcse.c:3240
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE in local_cprop_pass with -ftrapv for crafty
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33644