[builtins] Introduce proper Float64Cos and Float64Sin.

src/crankshaft/hydrogen-instructions.cc

Index: src/crankshaft/hydrogen-instructions.cc
diff --git a/src/crankshaft/hydrogen-instructions.cc b/src/crankshaft/hydrogen-instructions.cc
index 5d3c56d5b6f7d2232dbce9e98d85e77a13055d6c..ef50c64c4209a2b11bf05acd2fb0bdbba315c1e5 100644
--- a/src/crankshaft/hydrogen-instructions.cc
+++ b/src/crankshaft/hydrogen-instructions.cc
@@ -1115,10 +1115,14 @@ const char* HUnaryMathOperation::OpName() const {
       return "round";
     case kMathAbs:
       return "abs";
+    case kMathCos:
+      return "cos";
     case kMathLog:
       return "log";
     case kMathExp:
       return "exp";
+    case kMathSin:
+      return "sin";
     case kMathSqrt:
       return "sqrt";
     case kMathPowHalf:
@@ -3401,6 +3405,9 @@ HInstruction* HUnaryMathOperation::New(Isolate* isolate, Zone* zone,
     }
     if (std::isinf(d)) {  // +Infinity and -Infinity.
       switch (op) {
+        case kMathCos:
+        case kMathSin:
+          return H_CONSTANT_DOUBLE(std::numeric_limits<double>::quiet_NaN());
         case kMathExp:
           return H_CONSTANT_DOUBLE((d > 0.0) ? d : 0.0);
         case kMathLog:
@@ -3422,10 +3429,14 @@ HInstruction* HUnaryMathOperation::New(Isolate* isolate, Zone* zone,
       }
     }
     switch (op) {
+      case kMathCos:
+        return H_CONSTANT_DOUBLE(base::ieee754::cos(d));
       case kMathExp:
         return H_CONSTANT_DOUBLE(base::ieee754::exp(d));
       case kMathLog:
         return H_CONSTANT_DOUBLE(base::ieee754::log(d));
+      case kMathSin:
+        return H_CONSTANT_DOUBLE(base::ieee754::sin(d));
       case kMathSqrt:
         lazily_initialize_fast_sqrt(isolate);
         return H_CONSTANT_DOUBLE(fast_sqrt(d, isolate));