[LLVMbugs] [Bug 3366] New: llc segfault in CheckForPhysRegDependency

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=3366

           Summary: llc segfault in CheckForPhysRegDependency
           Product: new-bugs
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=2421)
 --> (http://llvm.org/bugs/attachment.cgi?id=2421)
testcase .ll

Several Ada testcases are failing due to a segfault in llc.  The
reduced testcase (attached) is pretty simple.  Backtrace:

_ZL25CheckForPhysRegDependencyPN4llvm6SDNodeES1_jPKNS_18TargetRegisterInfoEPKNS_15TargetInstrInfoERjRi
(ScheduleDAGSDNodes.cpp:57)                                                     
llvm::ScheduleDAGSDNodes::AddSchedEdges() (ScheduleDAGSDNodes.cpp:188)          
llvm::ScheduleDAGSDNodes::BuildSchedGraph() (ScheduleDAGSDNodes.cpp:213)        
(anonymous namespace)::ScheduleDAGRRList::Schedule()
(ScheduleDAGRRList.cpp:172)


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