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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c/97445] Some fonctions marked static inline in Linux kernel
 are not inlined
Date: Mon, 19 Oct 2020 15:11:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97445

Martin Li=C5=A1ka <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hubicka at gcc dot gnu.org,
                   |                            |rguenth at gcc dot gnu.org

--- Comment #16 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
The following happens:

get_order is called by kmalloc_large which is called in kmalloc. And kmalloc
calls the function for larger allocations. Problem is that we eliminate all
calls to get_order late

pipe.i.108t.thread1:;; Function get_order (get_order, funcdef_no=3D295,
decl_uid=3D4528, cgraph_uid=3D300, symbol_order=3D303)
pipe.i.108t.thread1:get_order (long unsigned int size)
pipe.i.108t.thread1:  _125 =3D get_order (_114);
pipe.i.108t.thread1:  _67 =3D get_order (_56);
pipe.i.109t.cdce:;; Function get_order (get_order, funcdef_no=3D295,
decl_uid=3D4396, cgraph_uid=3D300, symbol_order=3D303)
pipe.i.109t.cdce:get_order (long unsigned int size)

so remove_unreachable_nodes is not called any more.=