View
22
Download
2
Category
Preview:
DESCRIPTION
Chapter One Introduction to Pipelined Processors. Principle of Designing Pipeline Processors. (Design Problems of Pipeline Processors). Internal Data Forwarding and Register Tagging. Internal Forwarding and Register Tagging. - PowerPoint PPT Presentation
Citation preview
Chapter One Introduction to Pipelined
Processors
Principle of Designing Pipeline Processors
(Design Problems of Pipeline Processors)
Internal Data Forwarding and Register Tagging
Internal Forwarding and Register Tagging
• Internal Forwarding: It is replacing unnecessary memory accesses by register-to-register transfers.
• Register Tagging: It is the use of tagged registers for exploiting concurrent activities among multiple ALUs.
Internal Forwarding
• Memory access is slower than register-to-register operations.
• Performance can be enhanced by eliminating unnecessary memory accesses
Internal Forwarding
• This concept can be explored in 3 directions:1.Store – Load Forwarding2.Load – Load Forwarding3.Store – Store Forwarding
Store – Load Forwarding
Load – Load Forwarding
Store – Store Forwarding
Example
EXAMPLE
Example
EXAMPLE
Recommended