Imports of package devirtualize

PathSynopsis
cmd/compile/internal/base
cmd/compile/internal/inline
cmd/compile/internal/ir
cmd/compile/internal/logopt
cmd/compile/internal/pgoirPackage pgoir associates a PGO profile with the IR of the current package compilation.
cmd/compile/internal/typecheck
cmd/compile/internal/types
cmd/internal/obj
cmd/internal/src
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
osPackage os provides a platform-independent interface to operating system functionality.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.