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Optimize int operations by mutating uniquely-referenced operands in place (JIT only) #146640

@eendebakpt

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@eendebakpt

Feature or enhancement

Proposal:

When the tier 2 optimizer can prove that an operand to a int binary operation is uniquely referenced, we can mutate it in place instead of allocating a new object. This avoids a an int allocation and the subsequent deallocation of the consumed operand on every iteration.

The approach is similar to #146307. Also see #90530.

Has this already been discussed elsewhere?

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    interpreter-core(Objects, Python, Grammar, and Parser dirs)performancePerformance or resource usagetopic-JITtype-featureA feature request or enhancement

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