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AK+Everywhere: Replace __builtin bit functions

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In order to reduce our reliance on __builtin_{ffs, clz, ctz, popcount},
this commit removes all calls to these functions and replaces them with
the equivalent functions in AK/BuiltinWrappers.h.
This commit is contained in:
Nick Johnson 2021-12-19 15:46:55 -06:00 • committed by Andreas Kling
parent 26bb3e1acf
commit 08e4a1a4dc
20 changed files with 108 additions and 115 deletions
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3
Kernel/Memory/PhysicalRegion.cpp
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@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/BuiltinWrappers.h>
#include <AK/NonnullRefPtr.h>
#include <AK/RefPtr.h>
#include <Kernel/Assertions.h>
@ -80,7 +81,7 @@ OwnPtr<PhysicalRegion> PhysicalRegion::try_take_pages_from_beginning(unsigned pa
NonnullRefPtrVector<PhysicalPage> PhysicalRegion::take_contiguous_free_pages(size_t count)
{
auto rounded_page_count = next_power_of_two(count);
auto order = __builtin_ctz(rounded_page_count);
auto order = count_trailing_zeroes(rounded_page_count);
Optional<PhysicalAddress> page_base;
for (auto& zone : m_usable_zones) {