[DAGCombine] Handle out of range EXTRACT_VECTOR_ELT indices 

Handle this in DAGCombiner::visitEXTRACT_VECTOR_ELT the same as we already do in SelectionDAG::getNode and use APInt instead of getZExtValue.

This should also fix oss-fuzz #4910

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@321767 91177308-0d34-0410-b5e6-96231b3b80d8
3 files changed