[llvm-commits] PATCH: Fix crash in APInt.cpp

[Chad Rosier]

Thanks, James.  Committed revision 158213.

 Chad

On Jun 8, 2012, at 6:18 AM, James Benton wrote:

> Fixed the following crash in llvm::APInt::lshr when shiftAmt > BitWidth.
> Added a test which causes this crash.
> 
> Program received signal SIGSEGV, Segmentation fault.
> 0x0000000000ff5c9d in llvm::APInt::lshr (this=0x7fffffffc880, shiftAmt=160)
>    at /home/james/private_vmware/llvm/lib/Support/APInt.cpp:1173
> 1173                 (pVal[i+offset+1] << (APINT_BITS_PER_WORD - wordShift));
> 
> 
> #0  0x0000000000ff5c9d in llvm::APInt::lshr (this=0x7fffffffc870, shiftAmt=160)
>    at llvm/lib/Support/APInt.cpp:1173
> #1  0x00000000009168d2 in (anonymous namespace)::DAGCombiner::visitAND (this=0x7fffffffcf90, N=0x181b3c0)
>    at llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:2496
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