apply copy propagate do not replace lhs of assign (issue797 test)
apply copy propagate do not replace lhs of assign (issue797 test)

sklam/numba,numba/numba,seibert/numba,sklam/numba,IntelLabs/numba,stonebig/numba,stuartarchibald/numba,IntelLabs/numba,jriehl/numba,cpcloud/numba,jriehl/numba,stuartarchibald/numba,stuartarchibald/numba,numba/numba,gmarkall/numba,stonebig/numba,numba/numba,sklam/numba,sklam/numba,stonebig/numba,seibert/numba,cpcloud/numba,gmarkall/numba,cpcloud/numba,numba/numba,jriehl/numba,IntelLabs/numba,stonebig/numba,jriehl/numba,cpcloud/numba,IntelLabs/numba,gmarkall/numba,sklam/numba,gmarkall/numba,seibert/numba,stuartarchibald/numba,gmarkall/numba,cpcloud/numba,numba/numba,stuartarchibald/numba,IntelLabs/numba,jriehl/numba,stonebig/numba,seibert/numba,seibert/numba