[common, hle/kernel] Remove LTO_NOINLINE (#2908)

- Dont just tell the compiler what to inline/what not to inline; the compiler will be pissed off and make bad codegen
Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/2908
Reviewed-by: Caio Oliveira <caiooliveirafarias0@gmail.com>
Reviewed-by: Maufeat <sahyno1996@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: crueter <crueter@eden-emu.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>

2 files changed, 11 insertions, 13 deletions

diff --git a/src/common/common_funcs.h b/src/common/common_funcs.h
index ba3081efb4..4c5a009ec7 100644
--- a/src/common/common_funcs.h
+++ b/src/common/common_funcs.h
@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2019 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -39,12 +42,8 @@
 #define Crash() exit(1)
 #endif
 
-#define LTO_NOINLINE __attribute__((noinline))
-
 #else // _MSC_VER
 
-#define LTO_NOINLINE
-
 // Locale Cross-Compatibility
 #define locale_t _locale_t
 
diff --git a/src/core/hle/kernel/kernel.cpp b/src/core/hle/kernel/kernel.cpp
index 0ff81066e9..1cc060827d 100644
--- a/src/core/hle/kernel/kernel.cpp
+++ b/src/core/hle/kernel/kernel.cpp
@@ -359,7 +359,7 @@ struct KernelCore::Impl {
     static inline thread_local u8 host_thread_id = UINT8_MAX;
 
     /// Sets the host thread ID for the caller.
-    LTO_NOINLINE u32 SetHostThreadId(std::size_t core_id) {
+    u32 SetHostThreadId(std::size_t core_id) {
         // This should only be called during core init.
         ASSERT(host_thread_id == UINT8_MAX);
 
@@ -370,17 +370,16 @@ struct KernelCore::Impl {
     }
 
     /// Gets the host thread ID for the caller
-    LTO_NOINLINE u32 GetHostThreadId() const {
+    u32 GetHostThreadId() const {
         return host_thread_id;
     }
 
     // Gets the dummy KThread for the caller, allocating a new one if this is the first time
-    LTO_NOINLINE KThread* GetHostDummyThread(KThread* existing_thread) {
-        const auto initialize{[](KThread* thread) LTO_NOINLINE {
+    KThread* GetHostDummyThread(KThread* existing_thread) {
+        const auto initialize{[](KThread* thread) {
             ASSERT(KThread::InitializeDummyThread(thread, nullptr).IsSuccess());
             return thread;
         }};
-
         thread_local KThread raw_thread{system.Kernel()};
         thread_local KThread* thread = existing_thread ? existing_thread : initialize(&raw_thread);
         return thread;
@@ -410,11 +409,11 @@ struct KernelCore::Impl {
 
     static inline thread_local bool is_phantom_mode_for_singlecore{false};
 
-    LTO_NOINLINE bool IsPhantomModeForSingleCore() const {
+    bool IsPhantomModeForSingleCore() const {
         return is_phantom_mode_for_singlecore;
     }
 
-    LTO_NOINLINE void SetIsPhantomModeForSingleCore(bool value) {
+    void SetIsPhantomModeForSingleCore(bool value) {
         ASSERT(!is_multicore);
         is_phantom_mode_for_singlecore = value;
     }
@@ -425,14 +424,14 @@ struct KernelCore::Impl {
 
     static inline thread_local KThread* current_thread{nullptr};
 
-    LTO_NOINLINE KThread* GetCurrentEmuThread() {
+    KThread* GetCurrentEmuThread() {
         if (!current_thread) {
             current_thread = GetHostDummyThread(nullptr);
         }
         return current_thread;
     }
 
-    LTO_NOINLINE void SetCurrentEmuThread(KThread* thread) {
+    void SetCurrentEmuThread(KThread* thread) {
         current_thread = thread;
     }