Replace utils::cnttz{32,64} with std::countr_{zero,one}

Make #include <bit> mandatory.

Utilities/Thread.cpp

@@ -2406,7 +2406,7 @@ void thread_ctrl::set_thread_affinity_mask(u64 mask)
 	SetThreadAffinityMask(_this_thread, mask);
 #elif __APPLE__
 	// Supports only one core
-	thread_affinity_policy_data_t policy = { static_cast<integer_t>(utils::cnttz64(mask)) };
+	thread_affinity_policy_data_t policy = { static_cast<integer_t>(std::countr_zero(mask)) };
 	thread_port_t mach_thread = pthread_mach_thread_np(pthread_self());
 	thread_policy_set(mach_thread, THREAD_AFFINITY_POLICY, reinterpret_cast<thread_policy_t>(&policy), 1);
 #elif defined(__linux__) || defined(__DragonFly__) || defined(__FreeBSD__)

Utilities/asm.h

@@ -28,30 +28,6 @@ namespace utils
 #endif
 	}
 
-	inline u32 cnttz32(u32 arg, bool nonzero = false)
-	{
-#ifdef _MSC_VER
-		ulong res;
-		return _BitScanForward(&res, arg) || nonzero ? res : 32;
-#elif __BMI__
-		return _tzcnt_u32(arg);
-#else
-		return arg || nonzero ? __builtin_ctz(arg) : 32;
-#endif
-	}
-
-	inline u64 cnttz64(u64 arg, bool nonzero = false)
-	{
-#ifdef _MSC_VER
-		ulong res;
-		return _BitScanForward64(&res, arg) || nonzero ? res : 64;
-#elif __BMI__
-		return _tzcnt_u64(arg);
-#else
-		return arg || nonzero ? __builtin_ctzll(arg) : 64;
-#endif
-	}
-
 	inline u8 popcnt32(u32 arg)
 	{
 #ifdef _MSC_VER

Utilities/types.h

@@ -17,9 +17,12 @@
 #include <limits>
 #include <array>
 
-#if __has_include(<bit>)
-#include <bit>
+#ifdef _MSC_VER
+#ifndef __cpp_lib_bitops
+#define __cpp_lib_bitops
 #endif
+#endif
+#include <bit>
 
 #ifndef __has_builtin
 	#define __has_builtin(x) 0