[Bug tree-optimization/23942] New: loop problem / testcase takes very long time to compile

[marcus at jet dot franken dot de]

the following testcase (extracted from xaos) takes very long time to compile,  
  
a shorter version (just remove some tmp1 = .... lines) takes:  
  
 tree loop bounds      :  40.23 (100%) usr   0.02 (67%) sys  40.87 (100%) wall  
     
28 kB ( 1%) ggc

-- 
           Summary: loop problem / testcase takes very long time to compile
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: marcus at jet dot franken dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23942