wasi_threads_spawn.wat: sprinkle a few memory fences

While I suspect wait and notify are memory barriers for most implementations, it's safer to issue explicit fences.
WebAssembly · Jan 23, 2023 · c6be70c · c6be70c
1 parent d3610f2
commit c6be70c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/test/testsuite/wasi_threads_spawn.wat b/test/testsuite/wasi_threads_spawn.wat
@@ -18,6 +18,8 @@
  i32.const 8
  local.get $user_arg
  i32.store
+ ;; store fence
+ atomic.fence
  ;; notify the main
  i32.const 0
  i32.const 1
@@ -50,6 +52,8 @@
  if
  unreachable
  end
+ ;; load fence
+ atomic.fence
  ;; check the tid
  local.get $tid
  i32.const 4