V2EX interference graph

Interference Graph

释义 Definition

干涉图 / 冲突图:在编译器的寄存器分配中常用的一种图结构。图中的每个节点通常表示一个变量(更准确地说是“活跃区间/临时变量”),如果两个变量在程序的某些点上同时活跃(live)、不能分配到同一个寄存器,就在它们之间连一条边,表示它们彼此“冲突/干涉”。

发音 Pronunciation (IPA)

/ntrfrns rf/

例句 Examples

An interference graph shows which variables cannot share a register.
干涉图用来表示哪些变量不能共用同一个寄存器。

We build the interference graph from liveness analysis, then color it to assign registers while minimizing spills.
我们通过活跃性分析构建干涉图,再对其进行图着色以分配寄存器,并尽量减少溢出到内存(spill)。

词源 Etymology

interference 源自拉丁语词根 *inter-*(在……之间)+ ferre(携带、带来),在技术语境中常指“相互妨碍/冲突”;graph 源自希腊语 *graph-*(书写、描绘),在数学与计算机科学中指“图(由点和边构成的结构)”。合起来 interference graph 直译为“表示相互冲突关系的图”。

相关词 Related Words

文学与作品 Literary Works

  • Compilers: Principles, Techniques, and Tools(Aho, Lam, Sethi, Ullman,“龙书”):在寄存器分配章节讨论干涉图与图着色方法。
  • Modern Compiler Implementation(Andrew W. Appel):以干涉图为核心结构讲解基于图着色的寄存器分配。
  • Chaitin 等人的经典论文(如关于 register allocation via graph coloring 的研究):提出并推广了用干涉图建模寄存器冲突关系的思路。
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