[builtins] Introduce proper Float64Cos and Float64Sin.

src/assembler.cc

Index: src/assembler.cc
diff --git a/src/assembler.cc b/src/assembler.cc
index fa2d38fed2231689a7abe13b2387250ce18c5342..ad4146a999994d7a61fe2559a983ed90d1acd103 100644
--- a/src/assembler.cc
+++ b/src/assembler.cc
@@ -1573,6 +1573,11 @@ ExternalReference ExternalReference::ieee754_atanh_function(Isolate* isolate) {
       isolate, FUNCTION_ADDR(base::ieee754::atanh), BUILTIN_FP_FP_CALL));
 }
 
+ExternalReference ExternalReference::ieee754_cos_function(Isolate* isolate) {
+  return ExternalReference(
+      Redirect(isolate, FUNCTION_ADDR(base::ieee754::cos), BUILTIN_FP_CALL));
+}
+
 ExternalReference ExternalReference::ieee754_exp_function(Isolate* isolate) {
   return ExternalReference(
       Redirect(isolate, FUNCTION_ADDR(base::ieee754::exp), BUILTIN_FP_CALL));
@@ -1608,6 +1613,11 @@ ExternalReference ExternalReference::ieee754_expm1_function(Isolate* isolate) {
       isolate, FUNCTION_ADDR(base::ieee754::expm1), BUILTIN_FP_FP_CALL));
 }
 
+ExternalReference ExternalReference::ieee754_sin_function(Isolate* isolate) {
+  return ExternalReference(
+      Redirect(isolate, FUNCTION_ADDR(base::ieee754::sin), BUILTIN_FP_CALL));
+}
+
 ExternalReference ExternalReference::page_flags(Page* page) {
   return ExternalReference(reinterpret_cast<Address>(page) +
                            MemoryChunk::kFlagsOffset);