[LLVMbugs] [Bug 19635] New: Crash when compiling function returning zeroext i2

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=19635

            Bug ID: 19635
           Summary: Crash when compiling function returning zeroext i2
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Backend: X86
          Assignee: unassignedbugs at nondot.org
          Reporter: jaak.randmets at cyber.ee
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

When trying to compile the following code:

define zeroext i2 @crash () {
    ret i2 0
}

with llc I get crash and following stack trace:

$ llc crash.ll 
0  libLLVM-3.5.0svn.so 0x00007ffe0a0e5dd2 llvm::sys::PrintStackTrace(_IO_FILE*)
+ 34
1  libLLVM-3.5.0svn.so 0x00007ffe0a0e597c
2  libpthread.so.0     0x00007ffe097dfbb0
3  libLLVM-3.5.0svn.so 0x00007ffe0a538124 llvm::EVT::isExtendedVector() const +
4
4  libLLVM-3.5.0svn.so 0x00007ffe0a20f70d
5  libLLVM-3.5.0svn.so 0x00007ffe0a2259f5
llvm::SelectionDAGBuilder::visitRet(llvm::ReturnInst const&) + 1013
6  libLLVM-3.5.0svn.so 0x00007ffe0a240bd4
llvm::SelectionDAGBuilder::visit(llvm::Instruction const&) + 52
7  libLLVM-3.5.0svn.so 0x00007ffe0a24c2a1
llvm::SelectionDAGISel::SelectBasicBlock(llvm::ilist_iterator<llvm::Instruction
const>, llvm::ilist_iterator<llvm::Instruction const>, bool&) + 49
8  libLLVM-3.5.0svn.so 0x00007ffe0a24f172
llvm::SelectionDAGISel::SelectAllBasicBlocks(llvm::Function const&) + 1170
9  libLLVM-3.5.0svn.so 0x00007ffe0a250471
llvm::SelectionDAGISel::runOnMachineFunction(llvm::MachineFunction&) + 929
10 libLLVM-3.5.0svn.so 0x00007ffe0a518f90
llvm::FPPassManager::runOnFunction(llvm::Function&) + 656
11 libLLVM-3.5.0svn.so 0x00007ffe0a51902b
llvm::FPPassManager::runOnModule(llvm::Module&) + 43
12 libLLVM-3.5.0svn.so 0x00007ffe0a51b3f8
llvm::legacy::PassManagerImpl::run(llvm::Module&) + 728
13 llc                 0x000000000040d6b2
14 llc                 0x0000000000408420 main + 224
15 libc.so.6           0x00007ffe085a2965 __libc_start_main + 245
16 llc                 0x0000000000408479
Stack dump:
0.      Program arguments: llc crash.ll 
1.      Running pass 'Function Pass Manager' on module 'crash.ll'.
2.      Running pass 'X86 DAG->DAG Instruction Selection' on function '@crash'

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