Better comment about why mov is enoug for atomic store/load

wasmerio · Jun 14, 2022 · 220d957 · 220d957
1 parent 907b030
commit 220d957
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/compiler-singlepass/src/machine_x64.rs b/lib/compiler-singlepass/src/machine_x64.rs
@@ -3151,7 +3151,9 @@ impl Machine for MachineX86_64 {
             },
         );
     }
-    // x86_64 have a strong memory model, aligned move is guarantied to be atomic, too or from memory
+    // x86_64 have a strong memory model, so coherency between all threads (core) is garantied
+    // and aligned move is guarantied to be atomic, too or from memory
+    // so store/load an atomic is a simple mov on x86_64
     fn i32_atomic_save(
         &mut self,
         value: Location,