The [Map.Clear] method deletes all the entries, resulting in

pkg maps, func All[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0) iter.Seq2[$1, $2] #61900
pkg maps, func Collect[$0 comparable, $1 interface{}](iter.Seq2[$0, $1]) map[$0]$1 #61900
pkg maps, func Insert[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0, iter.Seq2[$1, $2]) #61900
pkg maps, func Keys[$0 interface{ ~map[$1]$2 }, $1 comparable, $2 interface{}]($0) iter.Seq[$1] #61900

- [Values](/pkg/maps#Values) returns an iterator over values in m.
- [Insert](/pkg/maps#Insert) adds the key-value pairs from seq to m.

go list -f 'ImportPath: "{{.ImportPath}}", Imports: "{{.Imports}}", ImportMap: "{{.ImportMap}}"' m/a m/b
cmp stdout want

-- want --
ImportPath: "m/a", Imports: "[m/b [m/a]]", ImportMap: "map[m/b:m/b [m/a]]"
ImportPath: "m/b", Imports: "[m/c]", ImportMap: "map[]"
-- go.mod --
module m

go 1.23

-- a/a.go --
package main

import _ "m/b"
-- a/default.pgo --
-- b/b.go --
package a

import _ "m/c"

stderr 'preprofile.*-i.*b(/|\\\\)default\.pgo'

# a and b built once each with PGO.
# Ideally we would check that the passed profile is the expected profile (here
# and for dependencies). Unfortunately there is no nice way to map the expected
# paths after preprocessing.
stderr -count=1 'compile.*-pgoprofile=.*a(/|\\\\)a\.go'
stderr -count=1 'compile.*-pgoprofile=.*b(/|\\\\)b\.go'

# nopgo should be built without PGO.