[pull] master from ruby:master#845
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pull[bot] merged 4 commits intoturkdevops:masterfrom Mar 12, 2026
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Tells ZJIT to do a side exit or to fail to compile, useful testing and for bug reports. We are picky about the syntactic form so we can tell where the call lands early in the compiler pipeline. The `::` prefix allows us to interpret it without needing to know under what lexical scope the iseq will run. Special semantics with ZJIT doesn't interfere with ruby level semantics; running these methods do nothing in all modes. So it's no problem to call these without ZJIT.
When lowering polymorphic `opt_send_without_block`, emit at most one branch per receiver type instead of one branch per profile bucket (`class, shape, flags`). This deduplicates redundant `HasType`/`IfTrue` chains while preserving immediate/heap splits under the same class (for example, `Fixnum`/`Bignum` and `StaticSymbol`/`DynamicSymbol`), reducing branch/codegen overhead without changing dispatch semantics. Stats diff (`railsbench`): - `code_region_bytes`: `15,171,584` -> `14,974,976` (`-1.30%`) - `side_exit_size`: `4,999,792` -> `4,955,020` (`-0.90%`)
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