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by superdimwit
1096 days ago
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On 1: this small amount of overhead matters because the amount of work you do on each opcode can be tiny. The extra jump could be 20% of your runtime!
On 2: yes, this helps the indirect branch target predictor. In a real program you’ll often get repeated sequences of opcodes (increment, then compare) that can be predicted. These branch predictors can be pattern based. |
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