[builtins] Introduce proper Float64Cos and Float64Sin.

src/compiler/x64/code-generator-x64.cc

Index: src/compiler/x64/code-generator-x64.cc
diff --git a/src/compiler/x64/code-generator-x64.cc b/src/compiler/x64/code-generator-x64.cc
index d6df0081b355668145c80221d146c5d715ec3699..f444d45277174b02b47a56710c479227e1e52e56 100644
--- a/src/compiler/x64/code-generator-x64.cc
+++ b/src/compiler/x64/code-generator-x64.cc
@@ -876,6 +876,12 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     case kIeee754Float64Atanh:
       ASSEMBLE_IEEE754_UNOP(atanh);
       break;
+    case kIeee754Float64Cbrt:
+      ASSEMBLE_IEEE754_UNOP(cbrt);
+      break;
+    case kIeee754Float64Cos:
+      ASSEMBLE_IEEE754_UNOP(cos);
+      break;
     case kIeee754Float64Exp:
       ASSEMBLE_IEEE754_UNOP(exp);
       break;
@@ -894,8 +900,8 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     case kIeee754Float64Log10:
       ASSEMBLE_IEEE754_UNOP(log10);
       break;
-    case kIeee754Float64Cbrt:
-      ASSEMBLE_IEEE754_UNOP(cbrt);
+    case kIeee754Float64Sin:
+      ASSEMBLE_IEEE754_UNOP(sin);
       break;
     case kX64Add32:
       ASSEMBLE_BINOP(addl);