The compile-angel package speeds up Emacs by ensuring that all Elisp
libraries are both byte-compiled and native-compiled:
- Byte compilation reduces the overhead of loading Emacs Lisp code at
  runtime.
- Native compilation improves performance by generating machine code that
  runs directly on the hardware, leveraging the full capabilities of the host
  CPU. The actual speedup varies with the characteristics of the Lisp code,
  but it is typically 2.5 to 5 times faster than the equivalent byte-compiled
  version.

This package offers:
- `compile-angel-on-load-mode': A global mode that compiles .el files both
  before they are loaded via `load' or `require', and after they are loaded,
  using `after-load-functions'.
- `compile-angel-on-save-local-mode': A local mode that compiles .el files
  whenever the user saves them.

Installation from MELPA:
------------------------
(use-package compile-angel
  :demand t
  :config
  ;; Set `compile-angel-verbose' to nil to disable compile-angel messages.
  ;; (When set to nil, compile-angel won't show which file is being compiled.)
  (setq compile-angel-verbose t)

  ;; The following directive prevents compile-angel from compiling your init
  ;; files. If you choose to remove this and compile your pre/post-init
  ;; files, ensure you understand the implications and thoroughly test your
  ;; code. For example, if you're using the `use-package' macro, you'll need
  ;; to explicitly add: (eval-when-compile (require 'use-package)) at the top
  ;; of your init file.
  (push "/init.el" compile-angel-excluded-path-suffixes)
  (push "/early-init.el" compile-angel-excluded-path-suffixes)

  ;; Uncomment the line below to compile automatically when an Elisp file is saved
  ;; (add-hook 'emacs-lisp-mode-hook #'compile-angel-on-save-local-mode)

  ;; A global mode that compiles .el files when they are loaded
  ;; using `load' or `require'.
  (compile-angel-on-load-mode 1))

Links:
------
- More information about compile-angel (Frequently asked questions...):
  https://github.com/jamescherti/compile-angel.el