// callEdge is called for each edge in the callgraph.
// calleeid is the callee's object node (has otFunction flag).
//
func (a *analysis) callEdge(caller *cgnode, site *callsite, calleeid nodeid) {
obj := a.nodes[calleeid].obj
if obj.flags&otFunction == 0 {
panic(fmt.Sprintf("callEdge %s -> n%d: not a function object", site, calleeid))
}
callee := obj.cgn
if cg := a.result.CallGraph; cg != nil {
// TODO(adonovan): opt: I would expect duplicate edges
// (to wrappers) to arise due to the elimination of
// context information, but I haven't observed any.
// Understand this better.
callgraph.AddEdge(cg.CreateNode(caller.fn), site.instr, cg.CreateNode(callee.fn))
}
if a.log != nil {
fmt.Fprintf(a.log, "\tcall edge %s -> %s\n", site, callee)
}
// Warn about calls to non-intrinsic external functions.
// TODO(adonovan): de-dup these messages.
if fn := callee.fn; fn.Blocks == nil && a.findIntrinsic(fn) == nil {
a.warnf(site.pos(), "unsound call to unknown intrinsic: %s", fn)
a.warnf(fn.Pos(), " (declared here)")
}
}
// callEdge is called for each edge in the callgraph.
// calleeid is the callee's object node (has otFunction flag).
//
func (a *analysis) callEdge(caller *cgnode, site *callsite, calleeid nodeid) {
obj := a.nodes[calleeid].obj
if obj.flags&otFunction == 0 {
panic(fmt.Sprintf("callEdge %s -> n%d: not a function object", site, calleeid))
}
callee := obj.cgn
if cg := a.result.CallGraph; cg != nil {
callgraph.AddEdge(cg.CreateNode(caller.fn), site.instr, cg.CreateNode(callee.fn))
}
if a.log != nil {
fmt.Fprintf(a.log, "\tcall edge %s -> %s\n", site, callee)
}
// Warn about calls to non-intrinsic external functions.
// TODO(adonovan): de-dup these messages.
if fn := callee.fn; fn.Blocks == nil && a.findIntrinsic(fn) == nil {
a.warnf(site.pos(), "unsound call to unknown intrinsic: %s", fn)
a.warnf(fn.Pos(), " (declared here)")
}
}