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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
Notes: sideshowbarker 2024-07-17 22:26:41 +09:00 
Author: https://github.com/Sylvyrfysh
Commit: https://github.com/SerenityOS/serenity/commit/08e4a1a4dcb
Pull-request: https://github.com/SerenityOS/serenity/pull/11322
20 changed files with 108 additions and 115 deletions
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3
Userland/Libraries/LibCrypto/BigInt/Algorithms/BitwiseOperations.cpp
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@@ -6,6 +6,7 @@
*/
#include "UnsignedBigIntegerAlgorithms.h"
#include <AK/BuiltinWrappers.h>
namespace Crypto {
@@ -153,7 +154,7 @@ FLATTEN void UnsignedBigIntegerAlgorithms::bitwise_not_without_allocation(
auto last_word_index = right.length() - 1;
auto last_word = right.words()[last_word_index];
output.m_words[last_word_index] = ((u32)0xffffffffffffffff >> __builtin_clz(last_word)) & ~last_word;
output.m_words[last_word_index] = ((u32)0xffffffffffffffff >> count_leading_zeroes(last_word)) & ~last_word;
}
/**