atomics: Introduce atomic_load_relaxed(), atomic_store_relaxed()

- Use as shorthand to atomic_load_*_ex(addr, ATOMIC_RELAXED)

src/atomics.h

@@ -380,6 +380,16 @@ static forceinline uint32_t atomic_or_uint32_ex(void* addr, uint32_t val, int me
 #endif
 }
 
+static forceinline uint32_t atomic_load_uint32_relax(const void* addr)
+{
+    return atomic_load_uint32_ex(addr, ATOMIC_RELAXED);
+}
+
+static forceinline void atomic_store_uint32_relax(void* addr, uint32_t val)
+{
+    atomic_store_uint32_ex(addr, val, ATOMIC_RELAXED);
+}
+
 static forceinline uint32_t atomic_load_uint32(const void* addr)
 {
     return atomic_load_uint32_ex(addr, ATOMIC_ACQUIRE);
@@ -622,6 +632,16 @@ static forceinline uint64_t atomic_or_uint64_ex(void* addr, uint64_t val, int me
 #endif
 }
 
+static forceinline uint64_t atomic_load_uint64_relax(const void* addr)
+{
+    return atomic_load_uint64_ex(addr, ATOMIC_RELAXED);
+}
+
+static forceinline void atomic_store_uint64_relax(void* addr, uint64_t val)
+{
+    atomic_store_uint64_ex(addr, val, ATOMIC_RELAXED);
+}
+
 static forceinline uint64_t atomic_load_uint64(const void* addr)
 {
     return atomic_load_uint64_ex(addr, ATOMIC_ACQUIRE);