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Kernel: Change static constexpr variables to constexpr where possible

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Function-local `static constexpr` variables can be `constexpr`. This
can reduce memory consumption, binary size, and offer additional
compiler optimizations.

These changes result in a stripped x86_64 kernel binary size reduction
of 592 bytes.
This commit is contained in:
Lenny Maiorani 2022-02-09 11:33:39 -07:00 • committed by Linus Groh
parent 6a4c8a66ae
commit c6acf64558
Notes: sideshowbarker 2024-07-17 19:05:21 +09:00
11 changed files with 26 additions and 15 deletions
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3
Kernel/Syscall.cpp
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@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2022, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -196,7 +197,7 @@ NEVER_INLINE void syscall_handler(TrapFrame* trap)
asm volatile(""
: "=m"(*ptr));
static constexpr FlatPtr iopl_mask = 3u << 12;
constexpr FlatPtr iopl_mask = 3u << 12;
FlatPtr flags = regs.flags();
if ((flags & (iopl_mask)) != 0) {