[LLVMbugs] [Bug 859] NEW: llc -shed=none asserts in LVA

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=859

           Summary: llc -shed=none asserts in LVA
           Product: tools
           Version: trunk
          Platform: Macintosh
        OS/Version: MacOS X
            Status: NEW
          Severity: major
          Priority: P2
         Component: llc
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jlaskey at apple.com


Running any .bc file through llc with the null (BFS) scheduler causes an assertion in LVA.

LiveVariables.cpp:126: failed assertion `VRInfo.DefInst && "Register use before def!"'

or

LiveInterval.cpp:283: failed assertion `B->end <= Start && "Cannot overlap two LiveRanges with differing 
ValID's" " (did you def the same reg twice in a MachineInstr?)"'

Are the two I've seen.



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