From 9f91d310c6a79bb0f5f681e931edf29158895311 Mon Sep 17 00:00:00 2001
From: Merry <git@mary.rs>
Date: Sat, 27 Jan 2024 21:36:39 +0000
Subject: [PATCH] atomic_ops: Remove volatile qualifier

---
 src/common/atomic_ops.h | 40 +++++++++++++++++++---------------------
 src/core/memory.cpp     |  6 ++----
 2 files changed, 21 insertions(+), 25 deletions(-)

diff --git a/src/common/atomic_ops.h b/src/common/atomic_ops.h
index c809e6963..885fe3c4e 100644
--- a/src/common/atomic_ops.h
+++ b/src/common/atomic_ops.h
@@ -16,32 +16,31 @@ namespace Common {
 #if _MSC_VER
 
 template <typename T>
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile T* pointer, T value, T expected);
+[[nodiscard]] inline bool AtomicCompareAndSwap(T* pointer, T value, T expected);
 template <typename T>
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile T* pointer, T value, T expected, T& actual);
+[[nodiscard]] inline bool AtomicCompareAndSwap(T* pointer, T value, T expected, T& actual);
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u8>(volatile u8* pointer, u8 value,
-                                                            u8 expected) {
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u8>(u8* pointer, u8 value, u8 expected) {
     const u8 result =
         _InterlockedCompareExchange8(reinterpret_cast<volatile char*>(pointer), value, expected);
     return result == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u16>(volatile u16* pointer, u16 value,
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u16>(u16* pointer, u16 value,
                                                              u16 expected) {
     const u16 result =
         _InterlockedCompareExchange16(reinterpret_cast<volatile short*>(pointer), value, expected);
     return result == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u32>(volatile u32* pointer, u32 value,
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u32>(u32* pointer, u32 value,
                                                              u32 expected) {
     const u32 result =
         _InterlockedCompareExchange(reinterpret_cast<volatile long*>(pointer), value, expected);
     return result == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(volatile u64* pointer, u64 value,
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(u64* pointer, u64 value,
                                                              u64 expected) {
     const u64 result = _InterlockedCompareExchange64(reinterpret_cast<volatile __int64*>(pointer),
                                                      value, expected);
@@ -54,29 +53,29 @@ template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(volatile u64* point
                                           reinterpret_cast<__int64*>(expected.data())) != 0;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u8>(volatile u8* pointer, u8 value,
-                                                            u8 expected, u8& actual) {
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u8>(u8* pointer, u8 value, u8 expected,
+                                                            u8& actual) {
     actual =
         _InterlockedCompareExchange8(reinterpret_cast<volatile char*>(pointer), value, expected);
     return actual == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u16>(volatile u16* pointer, u16 value,
-                                                             u16 expected, u16& actual) {
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u16>(u16* pointer, u16 value, u16 expected,
+                                                             u16& actual) {
     actual =
         _InterlockedCompareExchange16(reinterpret_cast<volatile short*>(pointer), value, expected);
     return actual == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u32>(volatile u32* pointer, u32 value,
-                                                             u32 expected, u32& actual) {
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u32>(u32* pointer, u32 value, u32 expected,
+                                                             u32& actual) {
     actual =
         _InterlockedCompareExchange(reinterpret_cast<volatile long*>(pointer), value, expected);
     return actual == expected;
 }
 
-template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(volatile u64* pointer, u64 value,
-                                                             u64 expected, u64& actual) {
+template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(u64* pointer, u64 value, u64 expected,
+                                                             u64& actual) {
     actual = _InterlockedCompareExchange64(reinterpret_cast<volatile __int64*>(pointer), value,
                                            expected);
     return actual == expected;
@@ -101,11 +100,11 @@ template [[nodiscard]] inline bool AtomicCompareAndSwap<u64>(volatile u64* point
 #else
 
 template <typename T>
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile T* pointer, T value, T expected) {
+[[nodiscard]] inline bool AtomicCompareAndSwap(T* pointer, T value, T expected) {
     return __sync_bool_compare_and_swap(pointer, expected, value);
 }
 
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u128 value, u128 expected) {
+[[nodiscard]] inline bool AtomicCompareAndSwap(u64* pointer, u128 value, u128 expected) {
     unsigned __int128 value_a;
     unsigned __int128 expected_a;
     std::memcpy(&value_a, value.data(), sizeof(u128));
@@ -114,13 +113,12 @@ template <typename T>
 }
 
 template <typename T>
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile T* pointer, T value, T expected,
-                                               T& actual) {
+[[nodiscard]] inline bool AtomicCompareAndSwap(T* pointer, T value, T expected, T& actual) {
     actual = __sync_val_compare_and_swap(pointer, expected, value);
     return actual == expected;
 }
 
-[[nodiscard]] inline bool AtomicCompareAndSwap(volatile u64* pointer, u128 value, u128 expected,
+[[nodiscard]] inline bool AtomicCompareAndSwap(u64* pointer, u128 value, u128 expected,
                                                u128& actual) {
     unsigned __int128 value_a;
     unsigned __int128 expected_a;
@@ -132,7 +130,7 @@ template <typename T>
     return actual_a == expected_a;
 }
 
-[[nodiscard]] inline u128 AtomicLoad128(volatile u64* pointer) {
+[[nodiscard]] inline u128 AtomicLoad128(u64* pointer) {
     unsigned __int128 zeros_a = 0;
     unsigned __int128 result_a =
         __sync_val_compare_and_swap((unsigned __int128*)pointer, zeros_a, zeros_a);
diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 1c218566f..e10a4601e 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -781,8 +781,7 @@ struct Memory::Impl {
             },
             [&]() { HandleRasterizerWrite(GetInteger(vaddr), sizeof(T)); });
         if (ptr) {
-            const auto volatile_pointer = reinterpret_cast<volatile T*>(ptr);
-            return Common::AtomicCompareAndSwap(volatile_pointer, data, expected);
+            return Common::AtomicCompareAndSwap(reinterpret_cast<T*>(ptr), data, expected);
         }
         return true;
     }
@@ -796,8 +795,7 @@ struct Memory::Impl {
             },
             [&]() { HandleRasterizerWrite(GetInteger(vaddr), sizeof(u128)); });
         if (ptr) {
-            const auto volatile_pointer = reinterpret_cast<volatile u64*>(ptr);
-            return Common::AtomicCompareAndSwap(volatile_pointer, data, expected);
+            return Common::AtomicCompareAndSwap(reinterpret_cast<u64*>(ptr), data, expected);
         }
         return true;
     }