This factors out from FunctionContext most of the rt-call-related routines and lifts them into ModuleContext. These have no FunctionContext dependencies and upcoming users need access without a FunctionContext.
Only emit_rtcall remains in FunctionContext since it relies on .locals. Clients in ModuleContext, cf course, won't need to use this version of emit_rtcall*.
This factors out from
FunctionContextmost of the rt-call-related routines and lifts them intoModuleContext. These have noFunctionContextdependencies and upcoming users need access without aFunctionContext.Only
emit_rtcallremains inFunctionContextsince it relies on.locals. Clients inModuleContext, cf course, won't need to use this version ofemit_rtcall*.