Reorder i31ref and dataref (#3509)

The binary spec
(https://docs.google.com/document/d/1yAWU3dbs8kUa_wcnnirDxUu9nEBsNfq0Xo90OWx6yuo/edit#)
lists `dataref` after `i31ref`, and `dataref` also comes after `i31ref`
in its binary code in the value-increasing order. This reorders these
two in wasm-type.h and other places, although in most of those places
the order is irrelevant.

This also adds C and JS API for `dataref`.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/js/binaryen.js-post.js b/src/js/binaryen.js-post.js
index 1ae7b11b2..8c6730e9e 100644
--- a/src/js/binaryen.js-post.js
+++ b/src/js/binaryen.js-post.js
@@ -38,6 +38,7 @@ function initializeConstants() {
     ['anyref', 'Anyref'],
     ['eqref', 'Eqref'],
     ['i31ref', 'I31ref'],
+    ['dataref', 'Dataref'],
     ['unreachable', 'Unreachable'],
     ['auto', 'Auto']
   ].forEach(entry => {
@@ -2090,6 +2091,12 @@ function wrapModule(module, self = {}) {
     }
   };
 
+  self['dataref'] = {
+    'pop'() {
+      return Module['_BinaryenPop'](module, Module['dataref']);
+    }
+  };
+
   self['ref'] = {
     'null'(type) {
       return Module['_BinaryenRefNull'](module, type);