8014329: Slim down the label stack structure in CodeGenerator Reviewed-by: attila, jlaskey

8014225: Rerun only failed 262 tests Reviewed-by: jlaskey, lagergren

8013912: Nashorn needs to reuse temporary symbols Reviewed-by: jlaskey, lagergren

8013914: Removed explicit LineNumberNodes that were too brittle when code moves around, and also introduced unnecessary footprint. Introduced the Statement node and fixed dead code elimination issues that were discovered by the absense of labels for LineNumberNodes. Reviewed-by: jlaskey, attila

8013913: Removed Source field from all nodes except FunctionNode in order to save footprint Reviewed-by: jlaskey, attila

8013874: Function argument's prototype seem cached and wrongly reused Reviewed-by: jlaskey

8013873: Regexp regression for escaped dash in character class Reviewed-by: jlaskey

8013878: ClassCastException in Regex Reviewed-by: jlaskey

8013871: mem usage histograms enabled with compiler logging level set to more specific than or equals to info when --print-mem-usage flag is used Reviewed-by: jlaskey, hannesw

8013477: Node.setSymbol needs to be copy on write - enable IR snapshots for recompilation based on callsite type specialization. [not enabled by default, hidden by a flag for now] Reviewed-by: jlaskey, hannesw

8013796: load("fx:base.js") should not be in fx:bootstrap.js Reviewed-by: sundar, lagergren Contributed-by: james.laskey@oracle.com

Merge

8013794: JDK-8006220 caused an octane performance regression. Reviewed-by: lagergren, sundar Contributed-by: james.laskey@oracle.com

8013729: SwitchPoint invalidation not working over prototype chain Reviewed-by: lagergren, sundar