A class that retrieves the VM scope descriptor from a suspended thread whose top method was compiled by the baseline compiler.
CodeInstaller generates a glue code which recovers registers and from the stack frames and branch to the newly compiled method instructions.
OptExecutionStateExtractor is a subclass of ExecutionStateExtractor.
A class helps schedule OSRed method, it is called right after thread switch and highly depends on the calling convention.
Temporary register set.