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diff --git a/tiger-compiler/src/inlining/libinlining.hh b/tiger-compiler/src/inlining/libinlining.hh
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+/**
+ ** \file inlining/libinlining.hh
+ ** \brief Declare functions exported by the inlining module.
+ */
+
+#pragma once
+
+#include <ast/fwd.hh>
+#include <misc/error.hh>
+
+/// Inlining functions of an ast::Ast.
+namespace inlining
+{
+  /*-----------.
+  | Inlining.  |
+  `-----------*/
+
+  /** Perform inline expansion of function bodies.
+
+      \param tree  abstract syntax tree's root, whose bindings and types
+                   have been computed.  Each identifier must also be unique
+                   within the AST to avoid name capture.
+
+      \return      the AST where the bodies of non recursive functions have
+                   been expanded (inlined), with bindings and type-checked.
+  */
+  template <typename A> A* inline_expand(const A& tree);
+
+  /*-------------------.
+  | Function pruning.  |
+  `-------------------*/
+
+  /** Prune unused function from the AST.
+
+      \param tree  abstract syntax tree's root, whose bindings and types
+                   have been computed, and whose identifiers are all unique.
+
+      \return      the AST whose unused functions have been removed, with
+                   bindings and type-checked.  */
+  template <typename A> A* prune(const A& tree);
+
+} // namespace inlining