Webkit 推出 B3 JIT Compiler (Bare Bones Backend)

Webkit 推出了 B3 加快 optimization 的速度,取代原來 LLVM 的工作:「Introducing the B3 JIT Compiler」。

在文章後方 Performance Results 的部份可以看到最主要的差異在啟動時間:

另外也可以看到其他各種 performance benchmark 也幾乎都是小勝 LLVM。

接下來會有 ARM64 與其他平台的計畫:

B3 is not yet complete. We still need to finish porting B3 to ARM64. B3 passes all tests, but we haven’t finished optimizing performance on ARM. Once all platforms that used the FTL switch to B3, we plan to remove LLVM support from the FTL JIT.

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