Hooking up asm-wasm conversion.

src/runtime/runtime-compiler.cc

Index: src/runtime/runtime-compiler.cc
diff --git a/src/runtime/runtime-compiler.cc b/src/runtime/runtime-compiler.cc
index c0950456f9b82d88802caa7e1e1b913ffbc11f02..f8783e8f895458064d0886103c5169f7307df2d7 100644
--- a/src/runtime/runtime-compiler.cc
+++ b/src/runtime/runtime-compiler.cc
@@ -13,6 +13,7 @@
 #include "src/messages.h"
 #include "src/v8threads.h"
 #include "src/vm-state-inl.h"
+#include "src/wasm/wasm-js.h"
 
 namespace v8 {
 namespace internal {
@@ -79,6 +80,31 @@ RUNTIME_FUNCTION(Runtime_CompileOptimized_NotConcurrent) {
   return function->code();
 }
 
+RUNTIME_FUNCTION(Runtime_InstantiateAsmJs) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(args.length(), 4);
+  CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0);
+
+  Handle<JSObject> foreign;
+  if (args[2]->IsJSObject()) {
+    foreign = args.at<i::JSObject>(2);
+  }
+  Handle<JSArrayBuffer> memory;
+  if (args[3]->IsJSArrayBuffer()) {
+    memory = args.at<i::JSArrayBuffer>(3);
+  }
+  Handle<Object> result;
+  if (args[1]->IsJSObject() &&
+      WasmJs::InstantiateAsmWasm(isolate,
+                                 handle(function->shared()->asm_wasm_data()),
+                                 memory, foreign, &result)) {
+    return *result;
+  } else {
+    // Remove wasm data and return a smi 0 to indicate failure.
+    function->shared()->ClearAsmWasmData();
+    return Smi::FromInt(0);
+  }
+}
 
 RUNTIME_FUNCTION(Runtime_NotifyStubFailure) {
   HandleScope scope(isolate);
@@ -89,7 +115,6 @@ RUNTIME_FUNCTION(Runtime_NotifyStubFailure) {
   return isolate->heap()->undefined_value();
 }
 
-
 class ActivationsFinder : public ThreadVisitor {
  public:
   Code* code_;