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bpo-43760: Check for tracing using 'bitwise or' instead of branch in dispatch. (pythonGH-28723)
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‎Include/opcode.h‎

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‎Misc/NEWS.d/next/Core and Builtins/2021-10-04-16-11-50.bpo-43760.R9QoUv.rst‎

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The number of hardware branches per instruction dispatch is reduced from two
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to one by adding a special instruction for tracing. Patch by Mark Shannon.
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