[LLVMbugs] [Bug 4396] New: Assertion `(PhysReg == 0 || !isChain) && " Chain dependence via physreg data?"' failed.

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=4396

           Summary: Assertion `(PhysReg == 0 || !isChain) && "Chain
                    dependence via physreg data?"' failed.
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: fvbommel at wxs.nl
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=3094)
 --> (http://llvm.org/bugs/attachment.cgi?id=3094)
The bitcode in question.

The attached (reduced) bitcode file produces the following assert in llc
-tailcallopt:
llc: ScheduleDAGSDNodes.cpp:201: void
llvm::ScheduleDAGSDNodes::AddSchedEdges(): Assertion `(PhysReg == 0 ||
!isChain) && "Chain dependence via physreg data?"' failed.


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