[turbofan] Support for %_DoubleHi, %_DoubleLo and %_ConstructDouble.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 25597eec652c6b258e68822b687cc56eaebcc642..e11730e6e58a695f14608e7b247179d4e4e92bcb 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1506,6 +1506,11 @@ Bounds Typer::Visitor::TypeJSCallRuntime(Node* node) {
     case Runtime::kInlineIsFunction:
     case Runtime::kInlineIsRegExp:
       return Bounds(Type::None(zone()), Type::Boolean(zone()));
+    case Runtime::kInlineOptimizedDoubleLo:
+    case Runtime::kInlineOptimizedDoubleHi:
+      return Bounds(Type::None(zone()), Type::Signed32());
+    case Runtime::kInlineOptimizedConstructDouble:
+      return Bounds(Type::None(zone()), Type::Number());
     default:
       break;
   }
@@ -2098,6 +2103,26 @@ Bounds Typer::Visitor::TypeFloat64RoundTiesAway(Node* node) {
 }
 
 
+Bounds Typer::Visitor::TypeFloat64ExtractLowWord32(Node* node) {
+  return Bounds(Type::Signed32());
+}
+
+
+Bounds Typer::Visitor::TypeFloat64ExtractHighWord32(Node* node) {
+  return Bounds(Type::Signed32());
+}
+
+
+Bounds Typer::Visitor::TypeFloat64InsertLowWord32(Node* node) {
+  return Bounds(Type::Number());
+}
+
+
+Bounds Typer::Visitor::TypeFloat64InsertHighWord32(Node* node) {
+  return Bounds(Type::Number());
+}
+
+
 Bounds Typer::Visitor::TypeLoadStackPointer(Node* node) {
   return Bounds(Type::Internal());
 }