Jump source list processing method, jump source list processing device and compiler

Abstract

The invention provides a jump source list processing method, a jump source list processing device and a compiler. The jump source list processing method includes that identify of a jump target which corresponds to n jump instructions is acquired, wherein the n is a positive integer larger than or equal to 2; the identify is taken as a pointer pointing to a delay slot behind each jump instruction in the n jump instructions, and the corresponding jump instructions are stored in address information in a code buffer area when the pointer points to the delay slots. The jump instruction address information in a jump source list is stored in the delay slots, so that memory overhead caused by the fact that a special space is arranged in a memory to store the jump instruction address information of the jump source list in a list structure mode can be avoided; after the address of the jump target is determined, modification of the target address of the n jump instructions can be completed in the code buffer area through one-time traversal; compared with the prior art, the jump source list processing method has the advantages that the number of times of traversal in modifying the n jump instructions according to the address of the jump target can be reduced, and execution efficiency in improving the n instructions can be improved.

Description

technical field [0001] The invention relates to computer technology, in particular to a jump source list processing method, device and compiler. Background technique [0002] In the implementation process of the compiler, it is necessary to transmit the code of the jump instruction to the instruction buffer (buffer) sequence. Since the address of the jump target cannot be obtained at present, the exact code of the jump instruction cannot be determined. Therefore, the jump target address can only be determined after the compilation process is over and all instruction locations are determined, and for jump instructions with consistent jump targets such as branch jumps, absolute jumps, and register jumps, it needs to be based on the The addresses of these jump instructions are used to generate a jump source list, so as to realize that after the jump target address is determined, these instructions are uniformly modified according to the jump source list. [0003] In the prior ...

AI Technical Summary

Problems solved by technology

[0004] However, the existing technology has the problems of large memory overhead and low execution efficiency for unified modification of instructions

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