[LLVMbugs] [Bug 14904] New: Segmentation fault running pass 'Recognize loop idioms'

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=14904

             Bug #: 14904
           Summary: Segmentation fault running pass 'Recognize loop
                    idioms'
           Product: new-bugs
           Version: 3.2
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: baldrick at free.fr
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


Created attachment 9859
  --> http://llvm.org/bugs/attachment.cgi?id=9859
testcase .ll

$ opt -O1 atautorelease-3.ll -disable-output
...
llvm::LPPassManager::runOnFunction(llvm::Function&) + 1631
...
llvm::FPPassManager::runOnFunction(llvm::Function&) + 639
...
llvm::MPPassManager::runOnModule(llvm::Module&) + 655
9  opt             0x0000000001047547 llvm::PassManagerImpl::run(llvm::Module&)
+ 199
10 opt             0x000000000053cf78 main + 3608
11 libc.so.6       0x00007f9b0c41e76d __libc_start_main + 237
...
Stack dump:
0.    Program arguments: opt -O1 atautorelease-3.ll -disable-output 
1.    Running pass 'CallGraph Pass Manager' on module 'atautorelease-3.ll'.
2.    Running pass 'Loop Pass Manager' on function '@test1'
3.    Running pass 'Recognize loop idioms' on basic block '%"3"'
Segmentation fault (core dumped)

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