[wasm] asm.js - Remove Wasm.instantiateModuleFromAsm, use asm.js directly.

src/asmjs/asm-js.cc

Index: src/asmjs/asm-js.cc
diff --git a/src/asmjs/asm-js.cc b/src/asmjs/asm-js.cc
index 182ee151fa27e0ad783cb5df5b005a4e13553190..e94d91730e558b5da3d9db28956c9c9ac706bdc2 100644
--- a/src/asmjs/asm-js.cc
+++ b/src/asmjs/asm-js.cc
@@ -56,6 +56,9 @@ i::MaybeHandle<i::FixedArray> CompileModule(
 Handle<i::Object> StdlibMathMember(i::Isolate* isolate,
                                    Handle<JSReceiver> stdlib,
                                    Handle<Name> name) {
+  if (stdlib.is_null()) {
+    return Handle<i::Object>();
+  }
   Handle<i::Name> math_name(
       isolate->factory()->InternalizeOneByteString(STATIC_CHAR_VECTOR("Math")));
   MaybeHandle<i::Object> maybe_math = i::Object::GetProperty(stdlib, math_name);
@@ -89,6 +92,9 @@ bool IsStdlibMemberValid(i::Isolate* isolate, Handle<JSReceiver> stdlib,
       return true;
     }
     case wasm::AsmTyper::StandardMember::kInfinity: {
+      if (stdlib.is_null()) {
+        return false;
+      }
       Handle<i::Name> name(isolate->factory()->InternalizeOneByteString(
           STATIC_CHAR_VECTOR("Infinity")));
       MaybeHandle<i::Object> maybe_value = i::Object::GetProperty(stdlib, name);
@@ -99,6 +105,9 @@ bool IsStdlibMemberValid(i::Isolate* isolate, Handle<JSReceiver> stdlib,
       return value->IsNumber() && std::isinf(value->Number());
     }
     case wasm::AsmTyper::StandardMember::kNaN: {
+      if (stdlib.is_null()) {
+        return false;
+      }
       Handle<i::Name> name(isolate->factory()->InternalizeOneByteString(
           STATIC_CHAR_VECTOR("NaN")));
       MaybeHandle<i::Object> maybe_value = i::Object::GetProperty(stdlib, name);
@@ -257,11 +266,8 @@ MaybeHandle<Object> AsmJs::InstantiateAsmWasm(i::Isolate* isolate,
       isolate, init, undefined, foreign_globals->length(), foreign_args_array);
   delete[] foreign_args_array;
 
-  if (retval.is_null()) {
-    thrower.Error(
-        "WASM.instantiateModuleFromAsm(): foreign init function failed");
-    return MaybeHandle<Object>();
-  }
+  DCHECK(!retval.is_null());
+
   return maybe_module_object;
 }