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We could replace some new switch statement types with older ones to reduce startup time. For example in `StringSupport`.

duplicates

JDK-8342584 Use more primordial constructs in the FFM implementations to allow earlier use

JDK-8342584 Use more primordial constructs in the FFM implementations to allow earlier use

relates to

JDK-8313344 Simple implementation of the java.awt.image.ColorConvertOp via panama is slow

JDK-8350108 Redundant class building setup in LambdaMetafactory when CDS lookup succeeds

JDK-8337505 Footprint and startup regressions up to 20% in GUI apps

JDK-8346651 Optimize the MemoryLayout::arrayElementVarHandle

JDK-8342584 Use more primordial constructs in the FFM implementations to allow earlier use

(2 relates to)

1.	Simplify the layout access VarHandle	Resolved	Chen Liang
2.	Reduce overhead associated with type switches	Resolved	Chen Liang
3.	Reduce dynamic code generation for a single downcall	Resolved	Chen Liang
4.	Improve symbolic sharing in dynamic constant pool entries	Resolved	Chen Liang