question: returns true if the register contains an integer 0 or a known-null object reference concode_field_sep SsaMethod ssaMeth concode_field_sep void process concode_elem_sep void run concode_elem_sep boolean tryReplacingWithConstant concode_elem_sep void replacePlainInsn
target: boolean function ( RegisterSpec arg0 ) { TypeBearer loc0 = arg0 . getTypeBearer ( ) ; if ( loc0 instanceof CstLiteralBits ) { CstLiteralBits loc1 = ( CstLiteralBits ) loc0 ; return ( loc1 . getLongBits ( ) == 0 ) ; } return false ; }