Enable TurboFan for Win64 targets.

test/cctest/compiler/test-linkage.cc

Index: test/cctest/compiler/test-linkage.cc
diff --git a/test/cctest/compiler/test-linkage.cc b/test/cctest/compiler/test-linkage.cc
index 0d5ee8f754e33e902f10ccf0fde9de95ece53bf3..2f454eaedb5d18637c3bf49efb087a8a05964884 100644
--- a/test/cctest/compiler/test-linkage.cc
+++ b/test/cctest/compiler/test-linkage.cc
@@ -65,8 +65,8 @@ TEST(TestLinkageJSFunctionIncoming) {
     CallDescriptor* descriptor = linkage.GetIncomingDescriptor();
     CHECK_NE(NULL, descriptor);
 
-    CHECK_EQ(1 + i, descriptor->JSParameterCount());
-    CHECK_EQ(1, descriptor->ReturnCount());
+    CHECK_EQ(1 + i, static_cast<int>(descriptor->JSParameterCount()));
+    CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
     CHECK_EQ(true, descriptor->IsJSFunctionCall());
   }
@@ -93,8 +93,8 @@ TEST(TestLinkageJSCall) {
     CallDescriptor* descriptor =
         linkage.GetJSCallDescriptor(i, CallDescriptor::kNoFlags);
     CHECK_NE(NULL, descriptor);
-    CHECK_EQ(i, descriptor->JSParameterCount());
-    CHECK_EQ(1, descriptor->ReturnCount());
+    CHECK_EQ(i, static_cast<int>(descriptor->JSParameterCount()));
+    CHECK_EQ(1, static_cast<int>(descriptor->ReturnCount()));
     CHECK_EQ(Operator::kNoProperties, descriptor->properties());
     CHECK_EQ(true, descriptor->IsJSFunctionCall());
   }