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2007
ACM

Recursive function data allocation to scratch-pad memory

9 years 3 months ago
Recursive function data allocation to scratch-pad memory
This paper presents the first automatic scheme to allocate local (stack) data in recursive functions to scratch-pad memory (SPM) in embedded systems. A scratch-pad is a fast directly addressed compiler-managed SRAM memory that replaces the hardware-managed cache. It is motivated by its significantly lower access time, energy consumption, real-time bounds, area and overall runtime. Existing compiler methods for allocating data to scratch-pad are able to place only code, global, heap and non-recursive stack data in scratch-pad memory; stack data for recursive functions is allocated entirely in DRAM, resulting in poor performance. In this paper we present a dynamic yet compiler-directed allocation method for recursive function stack data that for the first time, is able to place a portion of recursive stack data in scratch-pad. It has almost no software-caching overhead, and is able to move recursive function data back and forth between scratch-pad and DRAM to better track the program...
Angel Dominguez, Nghi Nguyen, Rajeev Barua
Added 12 Aug 2010
Updated 12 Aug 2010
Type Conference
Year 2007
Where CASES
Authors Angel Dominguez, Nghi Nguyen, Rajeev Barua
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