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…d reference check When the left side of a compound assignment may be a ref, the JIT adds a ref type check. The typed-reference path calls a helper that doesn't load the right hand side of the compound assignment. That's in contrast to the normal path that does put it in a register. If the typed ref path doesn't load, then the value remains undefined.
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When the left side of a compound assignment may be a ref, the JIT adds a ref type check. The typed-reference path calls a helper that doesn't load the right hand side of the compound assignment. That's in contrast to the normal path that does put it in a register. If the typed ref path doesn't load, then the value remains undefined.