[Bug tree-optimization/22228] New: [4.1 regression] ICE with -ftree-vectorize

[bangerth at dealii dot org]

Attached code fails like so: 
 
spec/src> /home/bangerth/bin/gcc-4.1-pre/bin/c++ -O3 -march=pentium4 
-ftree-vectorize -c mapping_cartesian.ii 
mapping_cartesian.cc: In constructor 
&#8216;MappingCartesian<dim>::InternalData::InternalData(const 
Quadrature<dim>&) 
[with int dim = 3]&#8217;: 
mapping_cartesian.cc:36: error: Definition in block 1 does not dominate use in 
block 6 
for SSA_NAME: TMT.2405_3(ab) in statement: 
TMT.2405_317 = PHI <TMT.2405_3(ab)(6), TMT.2405_3(ab)(5)>; 
PHI argument 
TMT.2405_3(ab) 
for PHI node 
TMT.2405_317 = PHI <TMT.2405_3(ab)(6), TMT.2405_3(ab)(5)>; 
mapping_cartesian.cc:36: internal compiler error: verify_ssa failed. 
Please submit a full bug report, 
with preprocessed source if appropriate. 
See <URL:http://gcc.gnu.org/bugs.html> for instructions. 
 
W.

-- 
           Summary: [4.1 regression] ICE with -ftree-vectorize
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: bangerth at dealii dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22228