[LLVMbugs] [Bug 14668] New: Do not know how to expand this operator's operand! UNREACHABLE executed at lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:2451!

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=14668

             Bug #: 14668
           Summary: Do not know how to expand this operator's operand!
                    UNREACHABLE executed at
                    lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:2451
                    !
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: -New Bugs
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: M8R-9yw8a5 at mailinator.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified


1. source code (file name: f.c):

int xs[16];

void f(int i)
{
    for (int i = 0; i < 16; i++)
        xs[i] = (long long)1 << i;
}

2. command line:

clang -O2 -c f.c

3. output:

ExpandIntegerOperand Op #2: 0x2a968338: i32,i32 = shl_parts 0x2a961338,
0x2a961008, 0x2a9681a0 [ID=0]

Do not know how to expand this operator's operand!
UNREACHABLE executed at
/usr/home/devhc/llvmhead/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp:2451!
Stack dump:
0.    Program arguments: /usr/home/devhc/lllvm/bin/clang -cc1 -triple
i386-unknown-freebsd10.0 -emit-obj -disable-free -main-file-name f.c
-mrelocation-model static -mdisable-fp-elim -masm-verbose -mconstructor-aliases
-target-cpu i486 -target-linker-version 2.17.50 -momit-leaf-frame-pointer
-coverage-file /usr/home/devhc/delme/f.o -resource-dir
/usr/home/devhc/lllvm/bin/../lib/clang/3.3 -fmodule-cache-path
/var/tmp/clang-module-cache -O2 -fdebug-compilation-dir /home/devhc/delme
-ferror-limit 19 -fmessage-length 82 -mstackrealign -fobjc-runtime=gnustep
-fdiagnostics-show-option -fcolor-diagnostics -backend-option -vectorize-loops
-o f.o -x c f.c 
1.    <eof> parser at end of file
2.    Code generation
3.    Running pass 'Function Pass Manager' on module 'f.c'.
4.    Running pass 'X86 DAG->DAG Instruction Selection' on function '@f'
clang: error: unable to execute command: Abort trap (core dumped)
clang: error: clang frontend command failed due to signal (use -v to see
invocation)
clang version 3.3 (trunk 170622) (llvm/trunk 170620)
Target: i386-unknown-freebsd10.0
Thread model: posix

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