[builtins] Introduce proper Float64Tan operator.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index a7d13337533b4d7bc5b4e8c417be650e628ae479..d0e9f0d51573e85281ecb5fcaf597e601a21093a 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1610,8 +1610,6 @@ Type* Typer::Visitor::TypeJSCallRuntime(Node* node) {
     case Runtime::kInlineDoubleLo:
     case Runtime::kInlineDoubleHi:
       return Type::Signed32();
-    case Runtime::kInlineConstructDouble:
-      return Type::Number();
     case Runtime::kInlineCreateIterResultObject:
     case Runtime::kInlineRegExpConstructResult:
       return Type::OtherObject();
@@ -1842,6 +1840,8 @@ Type* Typer::Visitor::TypeNumberSin(Node* node) { return Type::Number(); }
 
 Type* Typer::Visitor::TypeNumberSqrt(Node* node) { return Type::Number(); }
 
+Type* Typer::Visitor::TypeNumberTan(Node* node) { return Type::Number(); }
+
 Type* Typer::Visitor::TypeNumberTrunc(Node* node) {
   return TypeUnaryOp(node, NumberTrunc);
 }
@@ -2611,6 +2611,7 @@ Type* Typer::Visitor::TypeFloat64Sin(Node* node) { return Type::Number(); }
 
 Type* Typer::Visitor::TypeFloat64Sqrt(Node* node) { return Type::Number(); }
 
+Type* Typer::Visitor::TypeFloat64Tan(Node* node) { return Type::Number(); }
 
 Type* Typer::Visitor::TypeFloat64Equal(Node* node) { return Type::Boolean(); }