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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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5
Kernel/Storage/ATA/AHCIController.cpp
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@ -5,6 +5,7 @@
*/
#include <AK/Atomic.h>
#include <AK/BuiltinWrappers.h>
#include <AK/OwnPtr.h>
#include <AK/RefPtr.h>
#include <AK/Types.h>
@ -185,12 +186,12 @@ RefPtr<StorageDevice> AHCIController::device(u32 index) const
{
NonnullRefPtrVector<StorageDevice> connected_devices;
u32 pi = hba().control_regs.pi;
u32 bit = __builtin_ffsl(pi);
u32 bit = bit_scan_forward(pi);
while (bit) {
dbgln_if(AHCI_DEBUG, "Checking implemented port {}, pi {:b}", bit - 1, pi);
pi &= ~(1u << (bit - 1));
auto checked_device = device_by_port(bit - 1);
bit = __builtin_ffsl(pi);
bit = bit_scan_forward(pi);
if (checked_device.is_null())
continue;
connected_devices.append(checked_device.release_nonnull());