Instruction scheduling: Difference between revisions

Revision as of 14:51, 10 January 2017

Revision as of 06:45, 17 May 2017

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{{Unreferenced|date=January 2009}}

In [[computer science]], '''instruction scheduling''' is a [[compiler optimization]] used to improve instruction-level parallelism, which improves performance on machines with [[instruction pipeline]]s. Put more simply, without changing the meaning of the code, it tries to "

* Avoid [[pipeline stall]]s by rearranging the order of instructions.

* Avoid illegal or semantically ambiguous operations (typically involving subtle instruction pipeline timing issues or non-interlocked resources.).

<!-- * order the instructions to avoid duplicated memory access

This doesn't belong in instruction scheduling