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Compile-time feedback-directed optimizations using estimated edge profiles from hardware-event sampling
Compile-time feedback-directed optimizations using estimated edge profiles from hardware-event sampling
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机译:使用来自硬件事件采样的估计边缘配置文件进行编译时反馈导向的优化
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摘要
Traditional feedback-directed optimization (FDO) is not widely used due to the significant computational overhead involved in using instrumented binaries. The described embodiments provide methods that eliminate the need for instrumented binaries by permitting the conversion of hardware-event sampling information into edge frequencies usable by FDO compilers. Some advantages include: the ability to collect feedback data on production systems; the ability to perform FDO on the OS kernel; and the ability to avoid disrupting timing paths from instrumented binaries.
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