[Bug fortran/38044] New: -O1/-O2/-O3 -fgraphite-identity causes ICE when compiling induct.f90 Polyhedron 2005 benchmark

[howarth at nitro dot med dot uc dot edu]

When compiling the induct.f90 Polyhedron 2005 benchmark with "-O2
-fgraphite-identity" or "-O3 -fgraphite-identity", the gfortran compiler ICEs
with the error...

induct.f90: In function ‘build_vrml_data’:
induct.f90:4840: error: definition in block 26 does not dominate use in block
151
for SSA_NAME: HEAP.2074_877 in statement:
HEAP.2074_2308 = PHI <HEAP.2074_877(151)>
PHI argument
HEAP.2074_877
for PHI node
HEAP.2074_2308 = PHI <HEAP.2074_877(151)>
induct.f90:4840: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Using "-O1 -fgraphite-identity" produces a bus error instead...

induct.f90: In function ‘rect_self_inductance’:
induct.f90:4727: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Using -O0 -fgraphite doesn't cause a compiler ICE when compiling this code.


-- 
           Summary: -O1/-O2/-O3 -fgraphite-identity causes ICE when
                    compiling induct.f90 Polyhedron 2005 benchmark
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: howarth at nitro dot med dot uc dot edu
 GCC build triplet: i686-apple-darwin9
  GCC host triplet: i686-apple-darwin9
GCC target triplet: i686-apple-darwin9


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38044