[LLVMbugs] [Bug 6047] New: Post-Dominator Tree Construction bug

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=6047

           Summary: Post-Dominator Tree Construction bug
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Global Analyses
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: kuba at gcc.gnu.org
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=4056)
 --> (http://llvm.org/bugs/attachment.cgi?id=4056)
test-case

$ opt -postdomtree j.ll -disable-output
0   opt               0x0042a288 PrintStackTrace(void*) + 40
1   opt               0x0042a9f9 SignalHandler(int) + 713
2   libSystem.B.dylib 0x95fce9bb _sigtramp + 43
3   libSystem.B.dylib 0xffffffff _sigtramp + 1778587247
4   opt               0x003bb9c5 void
llvm::DominatorTreeBase<llvm::BasicBlock>::recalculate<llvm::Function>(llvm::Function&)
+ 5717
5   opt               0x00294587
llvm::PostDominatorTree::runOnFunction(llvm::Function&) + 39
6   opt               0x003b479e
llvm::FPPassManager::runOnFunction(llvm::Function&) + 382
7   opt               0x003b4c77
llvm::FPPassManager::runOnModule(llvm::Module&) + 167
8   opt               0x003b1f43
llvm::MPPassManager::runOnModule(llvm::Module&) + 803
9   opt               0x003b250c llvm::PassManagerImpl::run(llvm::Module&) +
156
10  opt               0x003b260b llvm::PassManager::run(llvm::Module&) + 27
11  opt               0x0003f946 main + 2582
12  opt               0x00036e79 start + 53
13  opt               0x00000003 start + 4294742463
Stack dump:
0.      Running pass 'Function Pass Manager' on module 'j.bc'.
1.      Running pass 'Post-Dominator Tree Construction' on function '@f'


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