[LLVMbugs] [Bug 10732] New: Codegen loop pass tries to split critical edge to a landing pad block

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10732

           Summary: Codegen loop pass tries to split critical edge to a
                    landing pad block
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=7118)
 --> (http://llvm.org/bugs/attachment.cgi?id=7118)
testcase .ll

The attached testcase verifies OK, but the code generator barfs on it:

$ opt -verify loops.ll -disable-output
$ llc loops.ll
llc: llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp:182: llvm::BasicBlock*
llvm::SplitCriticalEdge(llvm::TerminatorInst*, unsigned int, llvm::Pass*,
bool): Assertion `!DestBB->isLandingPad() && "Cannot split critical edge to a
landing pad block!"' failed.

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