文章基本信息
- 标题：A Comparative Survey of Load Speculation Architectures
- 本地全文：下载
- 作者：Brad Calder ; Glenn Reinman
- 期刊名称：The Journal of Instruction-Level Parallelism
- 电子版ISSN：1942-9525
- 出版年度：2000
- 卷号：2
- 出版社：International Symposium on Microarchitecture
- 摘要：LoadlatencyremainsasignicantbottleneckindynamicallyscheduledpipelinedprocessorsLoadspeculationtechniqueshavebeenproposedtoreducethislatencyDependencePredictioncanbeusedtoallowloadstobeissuedbeforeallpriorstoreaddressesareknownandtopredictexactlywhichstorealoadshouldwaituponAddressPredictioncanbeusedtoallowaloadtobypassthecalculationofitseectiveaddressandspeculativelyissueValuePredictioncanbeusedtobypasstheloadforwardlatencyandavoidcachemissesMemoryRenaminghasbeenproposedtocommunicatestoredvaluesdirectlytoaliasedloadsInthispaperweexamineindetailtheinteractionandperformancetradeosofthesefourloadspeculationtechniquesinthepresenceoftwomispeculationrecoveryarchitecturesreexecutionandsquashWeexaminetheperformanceofcombiningthesetechniquestocreatealoadspeculationchooserwhichprovidesperformanceimprovementoverusinganyonetechniqueinisolationWealsoexaminetheaccuracyoftheseloadspeculationtechniquesforpredictingdatacachemisses
