Content deleted Content added
Undid revision 1208414828 by 81.222.190.168 (talk) |
→Compiler examples: add uops.info |
||
| (One intermediate revision by one other user not shown) | |||
Line 1:
{{Short description|Compiler optimization technique}}
{{Refimprove|date=April 2018}}
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, it tries to do the following without changing the meaning of the code:
Line 55 ⟶ 56:
* [[Agner Fog]], who compiles extensive data for the [[x86 architecture]];<ref name="optimize">{{cite web |title=Software optimization resources. C++ and assembly. Windows, Linux, BSD, Mac OS X |url=https://www.agner.org/optimize/ |website=Agner Fog}}</ref>
* InstLatx64, which uses [[AIDA64]] to collect data on x86 CPUs.<ref>{{cite web |title=x86, x64 Instruction Latency, Memory Latency and CPUID dumps |url=http://instlatx64.atw.hu/ |website=instlatx64.atw.hu}} See also the "Comments" link on the page.</ref>
* uops.info, which provides latency, throughput, and port usage information for x86 microarchitectures.<ref>[https://uops.info/ uops.info]</ref><ref>{{Cite conference |title=uops.info: Characterizing Latency, Throughput, and Port Usage of Instructions on Intel Microarchitectures |last1=Abel |first1=Andreas |last2=Reineke |first2=Jan |date=2019 |conference=[[International Conference on Architectural Support for Programming Languages and Operating Systems]], Providence, RI, USA, April 13–17, 2019 |arxiv=1810.04610 |doi=10.1145/3297858.3304062 |isbn=978-1-4503-6240-5 |pages=673-686 |book-title=ASPLOS '19: Proceedings of the Twenty-Fourth International Conference on Architectural Support for Programming Languages and Operating Systems |publication-date=April 2019 |publication-place=New York, NY, USA |publisher=[[Association for Computing Machinery|ACM]] }}</ref>
LLVM's {{code|llvm-exegesis}} should be usable on all machines, especially to gather information on non-x86 ones.<ref>{{cite web |title=llvm-exegesis - LLVM Machine Instruction Benchmark |url=https://llvm.org/docs/CommandGuide/llvm-exegesis.html |website=LLVM 12 Documentation}}</ref>
| |||