[GR-72023] Allocation and write barrier refactorings.#12803
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useTLABargument that determines if the TLAB logic should be used).@ConstantParameter boolean useTLABto a few of the HotSpot snippets so that the TLAB code is only emitted if TLAB support is enabled on HotSpot.TLABUsagePolicyto allow more fine grained control over code generation.OutlineWriteBarriersand introduced a new option namedWriteBarrierOutlininginstead that allows more fine grained control.HostedOptionKeyso that its constructor supports extra flags (similar toRuntimeOptionKeyFlag).