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gh-131798: JIT: Split `CALL_ISINSTANCE` into several uops #172177

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gh-131798: JIT: Split `CALL_ISINSTANCE` into several uops

gh-131798: JIT: Split `CALL_ISINSTANCE` into several uops #172177

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Job	Run time
Unresolved review	5s
DO-NOT-MERGE	4s
	9s

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