Add atomic loads and stores (#1077)

Add IR, wast and binary support for atomic loads and stores.

Currently all IR generated by means other than parsing wast and binary files always generates non-atomic accesses, and optimizations have not yet been made aware of atomics, so they are certainly not ready to be used yet.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/passes/Print.cpp b/src/passes/Print.cpp
index 0494e7d78..7ec3e98a3 100644
--- a/src/passes/Print.cpp
+++ b/src/passes/Print.cpp
@@ -296,7 +296,9 @@ struct PrintSExpression : public Visitor<PrintSExpression> {
   }
   void visitLoad(Load *curr) {
     o << '(';
-    prepareColor(o) << printWasmType(curr->type) << ".load";
+    prepareColor(o) << printWasmType(curr->type);
+    if (curr->isAtomic) o << ".atomic";
+    o << ".load";
     if (curr->bytes < 4 || (curr->type == i64 && curr->bytes < 8)) {
       if (curr->bytes == 1) {
         o << '8';
@@ -322,7 +324,9 @@ struct PrintSExpression : public Visitor<PrintSExpression> {
   }
   void visitStore(Store *curr) {
     o << '(';
-    prepareColor(o) << printWasmType(curr->valueType) << ".store";
+    prepareColor(o) << printWasmType(curr->valueType);
+    if (curr->isAtomic) o << ".atomic";
+    o << ".store";
     if (curr->bytes < 4 || (curr->valueType == i64 && curr->bytes < 8)) {
       if (curr->bytes == 1) {
         o << '8';