[LLVMbugs] [Bug 1724] New: loop-unswitch crash

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Sat Oct 6 04:05:10 PDT 2007


           Summary: loop-unswitch crash
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: major
          Priority: P2
         Component: Loop Optimizer
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: rafael.espindola at gmail.com
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=1154)
 --> (http://llvm.org/bugs/attachment.cgi?id=1154)

The attached file was reduced from a gcc bootstrap. It  fails with
opt bugpoint-reduced-simplified.bc -loop-unswitch
opt: /home/espindola/llvm/include/llvm/Analysis/Dominators.h:406: void
const, std::set<llvm::BasicBlock*, std::less<llvm::BasicBlock*>,
std::allocator<llvm::BasicBlock*> > > >, llvm::BasicBlock*): Assertion
`I->second.count(Node) && "Node is not in DominanceFrontier of BB"' failed.

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