[LLVMbugs] [Bug 5631] New: Assertion failed: (VI != valueNumbering.end() && " Value not numbered?") in GVN

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=5631

           Summary: Assertion failed: (VI != valueNumbering.end() && "Value
                    not numbered?") in GVN
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: benny.kra at gmail.com
                CC: llvmbugs at cs.uiuc.edu


$ opt -gvn < bugpoint-reduced-simplified.ll

Assertion failed: (VI != valueNumbering.end() && "Value not numbered?"),
function lookup, file GVN.cpp, line 633.
0  opt               0x0000000100416b61 PrintStackTrace(void*) + 38
1  opt               0x00000001004170ef SignalHandler(int) + 336
2  libSystem.B.dylib 0x00007fff84820eaa _sigtramp + 26
3  libSystem.B.dylib 0x00007fff847c5bea tiny_malloc_from_free_list + 1196
4  libSystem.B.dylib 0x00007fff8489ce74 __pthread_markcancel + 0
5  opt               0x00000001000d3078 (anonymous
namespace)::ValueTable::lookup(llvm::Value*) const + 156
6  opt               0x00000001000d4cab (anonymous
namespace)::GVN::performPRE(llvm::Function&) + 477
7  opt               0x00000001000d9f4a (anonymous
namespace)::GVN::runOnFunction(llvm::Function&) + 464
8  opt               0x00000001003ab974
llvm::FPPassManager::runOnFunction(llvm::Function&) + 336
9  opt               0x00000001003abb3a
llvm::FPPassManager::runOnModule(llvm::Module&) + 82
10 opt               0x00000001003ab650
llvm::MPPassManager::runOnModule(llvm::Module&) + 380
11 opt               0x00000001003ad575
llvm::PassManagerImpl::run(llvm::Module&) + 111
12 opt               0x00000001003ad5d7 llvm::PassManager::run(llvm::Module&) +
33
13 opt               0x000000010005d787 main + 3320
14 opt               0x0000000100053638 start + 52
15 opt               0x0000000000000002 start + 4294625790
Stack dump:
0.      Running pass 'Function Pass Manager' on module '<stdin>'.
1.      Running pass 'Global Value Numbering' on function '@peel_to_type'

llvm r90019. Test case from git's sha1_name.c


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