[LLVMbugs] [Bug 2303] New: instcombine crash

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=2303

           Summary: instcombine crash
           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
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1627)
 --> (http://llvm.org/bugs/attachment.cgi?id=1627)
testcase .ll

This breaks the llvm-gcc build.

$ opt -instcombine y.bc -disable-output
opt[0x9d4d92]
opt[0x9d4eb8]
/lib/libc.so.6[0x7f5c707cd100]
opt(_ZNK4llvm5Value10getValueIDEv+0xc)[0x6bab06]
opt(_ZNK4llvm11Instruction9getOpcodeEv+0x15)[0x6babe1]
opt(_ZN4llvm10BranchInst7classofEPKNS_11InstructionE+0x15)[0x6fa749]
opt(_ZN4llvm8isa_implINS_10BranchInstENS_14TerminatorInstEEEbRKT0_+0x15)[0x711abb]
opt(_ZN4llvm13isa_impl_wrapINS_10BranchInstEKNS_14TerminatorInstES3_E4doitERS3_+0x15)[0x711ad5]
opt(_ZN4llvm11isa_impl_clINS_14TerminatorInstEE3isaINS_10BranchInstEEEbRKS1_+0x15)[0x711aef]
opt(_ZN4llvm11isa_impl_clIPNS_14TerminatorInstEE3isaINS_10BranchInstEEEbS2_+0x15)[0x711b09]
opt(_ZN4llvm3isaINS_10BranchInstEPNS_14TerminatorInstEEEbRKT0_+0x18)[0x711b26]
opt(_ZN4llvm8dyn_castINS_10BranchInstEPNS_14TerminatorInstEEENS_10cast_rettyIT_T0_E8ret_typeERKS6_+0x15)[0x732c75]
opt[0x768f56]
opt[0x79f55a]
opt[0x79fdd4]
opt(_ZN4llvm13FPPassManager13runOnFunctionERNS_8FunctionE+0x127)[0x968e3f]
opt(_ZN4llvm13FPPassManager11runOnModuleERNS_6ModuleE+0x52)[0x968fac]
opt(_ZN4llvm13MPPassManager11runOnModuleERNS_6ModuleE+0xec)[0x968ae4]
opt(_ZN4llvm15PassManagerImpl3runERNS_6ModuleE+0x74)[0x968c74]
opt(_ZN4llvm11PassManager3runERNS_6ModuleE+0x21)[0x968cd7]
opt(main+0xa1b)[0x6c88cb]
/lib/libc.so.6(__libc_start_main+0xf4)[0x7f5c707b91c4]
opt(cos+0x119)[0x6ba309]
Segmentation fault


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