[wasm] Use the native_context for the TypeError in ToJS()

With this CL we use isolate->native_context() to provide a context for
the CEntryStub of the runtime call. The native_context() is sufficient
here because Runtime::kWasmThrowTypeError does not use the context.

R=titzer@chromium.org
TEST=mjsunit/wasm/ffi-error.js
BUG=chromium:639492

Review-Url: https://codereview.chromium.org/2291043002
Cr-Commit-Position: refs/heads/master@{#39014}

src/compiler/wasm-compiler.cc

@@ -2197,11 +2197,11 @@ Node* WasmGraphBuilder::ToJS(Node* node, wasm::LocalType type) {
     case wasm::kAstI32:
       return BuildChangeInt32ToTagged(node);
     case wasm::kAstI64:
-      DCHECK(module_ && !module_->instance->context.is_null());
-      // Throw a TypeError.
+      // Throw a TypeError. The native context is good enough here because we
+      // only throw a TypeError.
       return BuildCallToRuntime(Runtime::kWasmThrowTypeError, jsgraph(),
-                                module_->instance->context, nullptr, 0, effect_,
-                                *control_);
+                                jsgraph()->isolate()->native_context(), nullptr,
+                                0, effect_, *control_);
     case wasm::kAstF32:
       node = graph()->NewNode(jsgraph()->machine()->ChangeFloat32ToFloat64(),
                               node);

test/mjsunit/wasm/ffi-error.js

@@ -78,3 +78,23 @@ assertThrows(function() {
       module.exports.function_with_invalid_signature(33, 88);
     }, TypeError);
 })();
+
+
+(function I64JSImportThrows() {
+  var builder = new WasmModuleBuilder();
+  var sig_index = builder.addType(kSig_i_i);
+  var sig_i64_index = builder.addType(kSig_i_l);
+  var index = builder.addImport("func", sig_i64_index);
+  builder.addFunction("main", sig_index)
+    .addBody([
+      kExprGetLocal, 0,
+      kExprI64SConvertI32,
+      kExprCallImport, kArity1, index  // --
+    ])        // --
+    .exportFunc();
+  var func = function() {return {};};
+  var main = builder.instantiate({func: func}).exports.main;
+  assertThrows(function() {
+    main(13);
+  }, TypeError);
+})();

test/mjsunit/wasm/wasm-constants.js

@@ -93,6 +93,7 @@ var kAstF64 = 4;
 var kSig_i = makeSig([], [kAstI32]);
 var kSig_d = makeSig([], [kAstF64]);
 var kSig_i_i = makeSig([kAstI32], [kAstI32]);
+var kSig_i_l = makeSig([kAstI64], [kAstI32]);
 var kSig_i_ii = makeSig([kAstI32, kAstI32], [kAstI32]);
 var kSig_i_iii = makeSig([kAstI32, kAstI32, kAstI32], [kAstI32]);
 var kSig_d_dd = makeSig([kAstF64, kAstF64], [kAstF64]);