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Articles by Program. IsInSet

【译】.NET 7 中的性能改进（四）

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By Total Bytes, Program. GetChar, Program. IsInSet
| cnblogs.com
原文 | Stephen Toub 翻译 | 郑子铭 边界检查消除 (Bounds Check Elimination) 让.NET吸引人的地方之一是它的安全性。运行时保护对数组、字符串和跨度的访问，这样你就不会因为走到任何一端而意外地破坏内存；如果你这样做，而不是读/写任意的内存，你会得到异常。当然，这不是魔术；它是由JIT在每次对这些数据结构进行索引时插入边界检查完成的。例如，这个： [MethodImpl(MethodImplOptions.NoInlining)] static int Read0thElement(int[] array) => array[0]; 结果是： G_M000_IG01: ;; offset=0000H 4883EC28 sub rsp, 40 G_M000_IG02: ;; offset=0004H 83790800 cmp dword ptr [rcx+08H], 0 7608 jbe SHORT G_M000_IG04 8B4110 mov eax, dword ptr [rcx+10H] G_M000_IG03: ;;...
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