[builtins] Introduce proper Float64Cos and Float64Sin.

src/crankshaft/hydrogen-instructions.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 #define V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_
 
 #include <cstring>
 #include <iosfwd>
 
@@ skipping 2435 matching lines @@
   HValue* context() const { return OperandAt(0); }
   HValue* value() const { return OperandAt(1); }
 
   std::ostream& PrintDataTo(std::ostream& os) const override;  // NOLINT
 
   Representation RequiredInputRepresentation(int index) override {
     if (index == 0) {
       return Representation::Tagged();
     } else {
       switch (op_) {
+        case kMathCos:
         case kMathFloor:
         case kMathRound:
         case kMathFround:
+        case kMathSin:
         case kMathSqrt:
         case kMathPowHalf:
         case kMathLog:
         case kMathExp:
           return Representation::Double();
         case kMathAbs:
           return representation();
         case kMathClz32:
           return Representation::Integer32();
         default:
@@ skipping 48 matching lines @@
       case kMathClz32:
         set_representation(Representation::Integer32());
         break;
       case kMathAbs:
         // Not setting representation here: it is None intentionally.
         SetFlag(kFlexibleRepresentation);
         // TODO(svenpanne) This flag is actually only needed if representation()
         // is tagged, and not when it is an unboxed double or unboxed integer.
         SetChangesFlag(kNewSpacePromotion);
         break;
+      case kMathCos:
       case kMathFround:
       case kMathLog:
       case kMathExp:
+      case kMathSin:
       case kMathSqrt:
       case kMathPowHalf:
         set_representation(Representation::Double());
         break;
       default:
         UNREACHABLE();
     }
     SetFlag(kUseGVN);
     SetFlag(kAllowUndefinedAsNaN);
   }
@@ skipping 4641 matching lines @@
   bool IsDeletable() const override { return true; }
 };
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_CRANKSHAFT_HYDROGEN_INSTRUCTIONS_H_