An embedded cross-assembler optimization method

In traditional peephole optimization, the size of the sliding window is fixed or limited, which makes it difficult to match and optimize instructions which are not lexically adjacent (logically adjacent). In this paper, a novel method for peephole optimization is proposed by using regular expression. The new way does not set the size of the sliding window and can easily identify instructions which are not lexically adjacent. The experimental results show that the new way improves the optimization capability of the cross-assembler.