At minimum, the branch hint must be four instruction fetch groups before the branch instruction, or it will have no effect.
分支提示至少是分支指令之前的4个指令取出组,否则就没有效果。
First, it uses a for-each-group instruction that groups all of the children of html using the attribute group-starting-with="h1".
首先,它使用一个 for-each-group 指令,该指令使用 group-starting-with="h1" 属性对 html 的所有子元素进行分组。
For a branch hint to be most effective (so that the branch does not stall at all), it must be set at least four instruction fetch-groups plus 11 cycles before the branch instruction.
要想让分支提示变得非常有效(这样分支就根本不会暂停了),就必须设置至少4个指令取出组和分支指令之前的11个周期。
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