More push/pop support (#2260)

This adds
- `push`/`pop` support for other types: v128 and exnref
- `push`/`pop` support for binaryen.js
  Because binaryen.js follows Binaryen's AST structure, without `pop` in
  binaryen.js, EH instructions cannot be represented in binaryen.js.

1 files changed, 40 insertions, 0 deletions

diff --git a/test/binaryen.js/push-pop.js b/test/binaryen.js/push-pop.js
new file mode 100644
index 000000000..5064ed864
--- /dev/null
+++ b/test/binaryen.js/push-pop.js
@@ -0,0 +1,40 @@
+function cleanInfo(info) {
+  var ret = {};
+  for (var x in info) {
+    if (x !== 'value') {
+      ret[x] = info[x];
+    }
+  }
+  return ret;
+}
+
+function stringify(expr) {
+  return JSON.stringify(cleanInfo(Binaryen.getExpressionInfo(expr)));
+}
+
+var module = new Binaryen.Module();
+
+var v = module.addFunctionType("v", Binaryen.none, []);
+
+var func = module.addFunction("func", v, [],
+  module.block(null, [
+    module.push(module.i32.pop()),
+    module.push(module.i64.pop()),
+    module.push(module.f32.pop()),
+    module.push(module.f64.pop()),
+    module.push(module.v128.pop()),
+    module.push(module.exnref.pop())
+  ]
+ )
+)
+
+module.validate();
+console.log(module.emitText());
+
+console.log("getExpressionInfo(i32.pop) = " + stringify(module.i32.pop()));
+console.log("getExpressionInfo(i64.pop) = " + stringify(module.i64.pop()));
+console.log("getExpressionInfo(f32.pop) = " + stringify(module.f32.pop()));
+console.log("getExpressionInfo(f64.pop) = " + stringify(module.f64.pop()));
+console.log("getExpressionInfo(v128.pop) = " + stringify(module.v128.pop()));
+console.log("getExpressionInfo(exnref.pop) = " + stringify(module.exnref.pop()));
+console.log("getExpressionInfo(push) = " + stringify(module.push(module.i32.const(0))));