[Bug tree-optimization/42344] New: ICE in rs6000.md with ipa-sra for 252.eon

[janis at gcc dot gnu dot org]

GCC trunk gets a ICE when building SPEC CPU2000 test 252.eon with "-O2 -fPIC
-fno-inline", but not with -fno-ipa-sra, on powerpc-linux with secureplt
enabled, as demonstrated by this minimized testcase:

class mrSurfaceList
{
public:
  int *operator[] (int i) const { }
};
int *
makeGrid (mrSurfaceList * l)
{
  return (*l)[0];
}

elm3b149% /home/janis/tools/gcc-trunk-anonsvn/bin/g++ -c -O2 -fPIC -fno-inline
bug.cc
bug.cc: In function ‘int* makeGrid(mrSurfaceList*)’:
bug.cc:10:1: internal compiler error: in output_507, at
config/rs6000/rs6000.md:12527
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

The ICE begins with this patch, which adds IPA SRA:

    http://gcc.gnu.org/viewcvs?view=rev&rev=151800

    r151800 | jamborm | 2009-09-17 11:35:38 +0000 (Thu, 17 Sep 2009)


-- 
           Summary: ICE in rs6000.md with ipa-sra for 252.eon
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          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: powerpc-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42344