When switch expression contains try-catch, move the stack values into locals before the executing the switch expression, and back when it is done.
Reviewed-by: mcimadamore, vromero
Correcting handling of boolean-valued switch expressions when true/false; generating them directly rather than desugaring in Lower.
Reviewed-by: mcimadamore
8207405: Compiler Tree API support for Switch Expressions (Preview)
Support for switch expression, switch with rules and multiple constants for cases.
Reviewed-by: jjg, mcimadamore, vromero
