Kernel: Enable building the kernel with -flto

GCC with -flto is more aggressive when it comes to inlining and
discarding functions which is why we must mark some of the functions
as NEVER_INLINE (because they contain asm labels which would be
duplicated in the object files if the compiler decides to inline
the function elsewhere) and __attribute__((used)) for others so
that GCC doesn't discard them.

1 files changed, 8 insertions, 8 deletions

diff --git a/Kernel/Arch/x86/SafeMem.h b/Kernel/Arch/x86/SafeMem.h
index 3b984a663e..66d17fb74e 100644
--- a/Kernel/Arch/x86/SafeMem.h
+++ b/Kernel/Arch/x86/SafeMem.h
@@ -14,14 +14,14 @@ namespace Kernel {
 
 struct RegisterState;
 
-[[nodiscard]] bool safe_memcpy(void* dest_ptr, const void* src_ptr, size_t n, void*& fault_at);
-[[nodiscard]] ssize_t safe_strnlen(const char* str, size_t max_n, void*& fault_at);
-[[nodiscard]] bool safe_memset(void* dest_ptr, int c, size_t n, void*& fault_at);
-[[nodiscard]] Optional<u32> safe_atomic_fetch_add_relaxed(volatile u32* var, u32 val);
-[[nodiscard]] Optional<u32> safe_atomic_exchange_relaxed(volatile u32* var, u32 val);
-[[nodiscard]] Optional<u32> safe_atomic_load_relaxed(volatile u32* var);
-[[nodiscard]] bool safe_atomic_store_relaxed(volatile u32* var, u32 val);
-[[nodiscard]] Optional<bool> safe_atomic_compare_exchange_relaxed(volatile u32* var, u32& expected, u32 val);
+[[nodiscard]] bool safe_memcpy(void* dest_ptr, const void* src_ptr, size_t n, void*& fault_at) __attribute__((used));
+[[nodiscard]] ssize_t safe_strnlen(const char* str, size_t max_n, void*& fault_at) __attribute__((used));
+[[nodiscard]] bool safe_memset(void* dest_ptr, int c, size_t n, void*& fault_at) __attribute__((used));
+[[nodiscard]] Optional<u32> safe_atomic_fetch_add_relaxed(volatile u32* var, u32 val) __attribute__((used));
+[[nodiscard]] Optional<u32> safe_atomic_exchange_relaxed(volatile u32* var, u32 val) __attribute__((used));
+[[nodiscard]] Optional<u32> safe_atomic_load_relaxed(volatile u32* var) __attribute__((used));
+[[nodiscard]] bool safe_atomic_store_relaxed(volatile u32* var, u32 val) __attribute__((used));
+[[nodiscard]] Optional<bool> safe_atomic_compare_exchange_relaxed(volatile u32* var, u32& expected, u32 val) __attribute__((used));
 
 [[nodiscard]] ALWAYS_INLINE Optional<u32> safe_atomic_fetch_and_relaxed(volatile u32* var, u32 val)
 {