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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
Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
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@ -5,6 +5,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/BuiltinWrappers.h>
#include <AK/CharacterTypes.h>
#include <AK/Hex.h>
#include <AK/Platform.h>
@ -500,7 +501,7 @@ static ThrowCompletionOr<String> decode(JS::GlobalObject& global_object, const S
continue;
}
auto leading_ones = count_trailing_zeroes_32_safe(~decoded_code_unit) - 24;
auto leading_ones = count_trailing_zeroes_safe(static_cast<u32>(~decoded_code_unit)) - 24;
if (leading_ones == 1 || leading_ones > 4)
return global_object.vm().throw_completion<URIError>(global_object, ErrorType::URIMalformed);

3
Userland/Libraries/LibJS/Runtime/MathObject.cpp
View file

@ -6,6 +6,7 @@
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/BuiltinWrappers.h>
#include <AK/Function.h>
#include <AK/Random.h>
#include <LibJS/Runtime/GlobalObject.h>
@ -303,7 +304,7 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::clz32)
auto number = TRY(vm.argument(0).to_u32(global_object));
if (number == 0)
return Value(32);
return Value(__builtin_clz(number));
return Value(count_leading_zeroes(number));
}
// 21.3.2.2 Math.acos ( x ), https://tc39.es/ecma262/#sec-math.acos