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by dzaima
1075 days ago
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Note, that's only ARMv7; ARMv8 dropped most of the conditionally executed instruction stuff. And so it isn't even jumps that's fast on ARMv7, it's specifically cases that can be (and are) converted to predicated instrs; jumps are still gonna be slow in general on anything high-perf enough that it needs speculation, which can include the actual jumps of ARMv7. If a compiler can convert jumpy code to the predicated instrs, it should be able to trivially convert conditional arith to such too (even easier & more consistently than branches I'd say). |
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