2 files changed, 6 insertions, 1 deletions
diff --git a/test/wasm2js/br_table_to_loop.2asm.js.opt b/test/wasm2js/br_table_to_loop.2asm.js.opt
index fb8e7f956..cac6dc28c 100644
--- a/test/wasm2js/br_table_to_loop.2asm.js.opt
+++ b/test/wasm2js/br_table_to_loop.2asm.js.opt
@@ -1,4 +1,6 @@
 
+function wasm2js_trap() { throw new Error('abort'); }
+
 function asmFunc(importObject) {
  var env = importObject.env || importObject;
  var Math_imul = Math.imul;
@@ -14,7 +16,7 @@ function asmFunc(importObject) {
  var nan = NaN;
  var infinity = Infinity;
  function $0() {
-  while (1) continue;
+  wasm2js_trap();
  }
  
  function $1() {
diff --git a/test/wasm2js/br_table_to_loop.wast b/test/wasm2js/br_table_to_loop.wast
index 83d3702c2..a74d5ffe0 100644
--- a/test/wasm2js/br_table_to_loop.wast
+++ b/test/wasm2js/br_table_to_loop.wast
@@ -1,6 +1,8 @@
 (module
  (func "exp1"
   (block $block
+   ;; An infinite loop. When optimizing, wasm2js enables ignore-implicit-traps
+   ;; and so it can simplify this.
    (loop $loop
     (br_table $block $loop $block (i32.const 1))
    )
@@ -8,6 +10,7 @@
  )
  (func "exp2"
   (block $block
+   ;; A loop that never executes. This can be optimized into a nop.
    (loop $loop
     (br_table $loop $block $loop (i32.const 1))
    )