DirectCallee takes a function-typed expression and returns the underlying function that it refers to if statically known.

New generates a profile-graph from the profile or pre-processed profile.

NodeLineOffset returns the line offset of n in fn.

LookupFunc looks up a function or method in export data.

PostLookupCleanup performs any remaining cleanup operations needed after a series of calls to LookupFunc, specifically reading in the bodies of functions that may have been delayed due being encountered in a stage where the reader's curfn state was not set up.

CallSiteInfo captures call-site information and its caller/callee.

IREdge represents a call edge in the IRGraph with source, destination, weight, callsite, and line number information.

IRGraph is a call graph with nodes pointing to IRs of functions and edges carrying weights and callsite information.

IRNode represents a node (function) in the IRGraph.

Profile contains the processed PGO profile and weighted call graph used for PGO optimizations.