Imports of package interleaved

PathSynopsis
cmd/compile/internal/base
cmd/compile/internal/devirtualizePackage devirtualize implements two "devirtualization" optimization passes:
cmd/compile/internal/inline
cmd/compile/internal/inline/inlheur
cmd/compile/internal/ir
cmd/compile/internal/pgo
cmd/compile/internal/typecheck
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.