sentences:  This eliminates the need for a global register file, and simplifies the compiler's task in scheduling access to the registers by the program as a whole instead, each basic block is given its own local registers and the compiler optimizes access within the block, a much simpler task.EDGE systems bear a strong resemblance to dataflow languages from the 1960s–1970s, and again in the 1990s.Dataflow computers execute programs according to the "dataflow firing rule", which stipulates that an instruction may execute at any time after its operands are available.