add the highbits global to the IR (#1483)

We were using the global to return 64-bit values from functions, but
said global wasn't actually present in the IR.  This omission caused the
generated code to fail validation.

1 files changed, 1 insertions, 0 deletions

diff --git a/test/hello_world.2asm.js b/test/hello_world.2asm.js
index dd5966224..405e7916d 100644
--- a/test/hello_world.2asm.js
+++ b/test/hello_world.2asm.js
@@ -14,6 +14,7 @@ function asmFunc(global, env, buffer) {
  var Math_clz32 = global.Math.clz32;
  var Math_min = global.Math.min;
  var Math_max = global.Math.max;
+ var i64toi32_i32$HIGH_BITS = 0;
  function add(x, y) {
   x = x | 0;
   y = y | 0;