set the emscripten backend's atomic widths to 32

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 45d313b2ed..b56b42c798 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -269,6 +269,7 @@ public:
     // handled outside of clang. TODO: Handling this within clang may be
     // beneficial.
     this->UserLabelPrefix = "";
+    this->MaxAtomicPromoteWidth = this->MaxAtomicInlineWidth = 32;
   }
 };