[LLVMbugs] [Bug 1333] NEW: loop-unswitch dies with segfault in llvm::ETNode::Below

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1333

           Summary: loop-unswitch dies with segfault in llvm::ETNode::Below
           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


opt -loop-unswitch q.1.bc
WARNING: You're attempting to print out a bytecode file.
This is inadvisable as it may cause display problems. If
you REALLY want to taste LLVM bytecode first-hand, you
can force output with the `-f' option.

opt((anonymous namespace)::PrintStackTrace()+0x1a)[0x8649f76]
opt((anonymous namespace)::SignalHandler(int)+0x112)[0x864a23c]
[0xffffe420]
opt(llvm::ETNode::DominatedBySlow(llvm::ETNode*)+0x18)[0x84001c2]
opt(llvm::ETForestBase::dominates(llvm::BasicBlock*, llvm::BasicBlock*)+0xba)
[0x8400282]
opt(llvm::SplitCriticalEdge(llvm::TerminatorInst*, unsigned int, llvm::Pass*, 
bool)+0x4f0)[0x84a323e]
opt[0x846652e]
opt[0x84669f7]
opt[0x8467f01]
opt[0x846812d]
opt(llvm::LPPassManager::runOnFunction(llvm::Function&)+0x3f8)[0x851d796]
opt(llvm::FPPassManager::runOnFunction(llvm::Function&)+0x13a)[0x85d80be]
opt(llvm::FPPassManager::runOnModule(llvm::Module&)+0x6e)[0x85d8286]
opt(llvm::MPPassManager::runOnModule(llvm::Module&)+0x11d)[0x85d7d5f]
opt(llvm::PassManagerImpl::run(llvm::Module&)+0x6e)[0x85d7f2c]
opt(llvm::PassManager::run(llvm::Module&)+0x1a)[0x85d7f7e]
opt(main+0xa00)[0x837cc70]
/lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xdc)[0xb7ce0ebc]
opt(realloc+0x71)[0x836ec51]
Segmentation fault (core dumped)



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