From 580dfb2afbef15764b56714f3eb690a67f0af9c1 Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Sat, 14 Dec 2019 09:22:32 -0500
Subject: Bug 1331092 - Part 8: Support JSOP_TOASYNCITER in JIT.

Tag #1287
---
 js/src/jit/IonBuilder.cpp | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'js/src/jit/IonBuilder.cpp')

diff --git a/js/src/jit/IonBuilder.cpp b/js/src/jit/IonBuilder.cpp
index 171518d38..1e12f5dbe 100644
--- a/js/src/jit/IonBuilder.cpp
+++ b/js/src/jit/IonBuilder.cpp
@@ -2133,6 +2133,9 @@ IonBuilder::inspectOpcode(JSOp op)
       case JSOP_TOASYNCGEN:
         return jsop_toasyncgen();
 
+      case JSOP_TOASYNCITER:
+        return jsop_toasynciter();
+
       case JSOP_TOID:
         return jsop_toid();
 
@@ -13212,6 +13215,20 @@ IonBuilder::jsop_toasyncgen()
     return resumeAfter(ins);
 }
 
+bool
+IonBuilder::jsop_toasynciter()
+{
+    MDefinition* unwrapped = current->pop();
+    MOZ_ASSERT(unwrapped->type() == MIRType::Object);
+
+    MToAsyncIter* ins = MToAsyncIter::New(alloc(), unwrapped);
+
+    current->add(ins);
+    current->push(ins);
+
+    return resumeAfter(ins);
+}
+
 bool
 IonBuilder::jsop_toid()
 {
-- 
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