[builtins] Introduce proper Float64Tan operator.

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 59 matching lines @@
   V(CheckSmi)                                 \
   V(CheckValue)                               \
   V(ClampToUint8)                             \
   V(ClassOfTestAndBranch)                     \
   V(CompareNumericAndBranch)                  \
   V(CompareHoleAndBranch)                     \
   V(CompareGeneric)                           \
   V(CompareObjectEqAndBranch)                 \
   V(CompareMap)                               \
   V(Constant)                                 \
-  V(ConstructDouble)                          \
   V(Context)                                  \
   V(DebugBreak)                               \
   V(DeclareGlobals)                           \
   V(Deoptimize)                               \
   V(Div)                                      \
   V(DoubleBits)                               \
   V(DummyUse)                                 \
   V(EnterInlined)                             \
   V(EnvironmentMarker)                        \
   V(ForceRepresentation)                      \
@@ skipping 1593 matching lines @@
     set_representation(Representation::Integer32());
     SetFlag(kUseGVN);
   }
 
   bool IsDeletable() const override { return true; }
 
   Bits bits_;
 };
 
 
-class HConstructDouble final : public HTemplateInstruction<2> {
- public:
-  DECLARE_INSTRUCTION_FACTORY_P2(HConstructDouble, HValue*, HValue*);
-
-  Representation RequiredInputRepresentation(int index) override {
-    return Representation::Integer32();
-  }
-
-  DECLARE_CONCRETE_INSTRUCTION(ConstructDouble)
-
-  HValue* hi() { return OperandAt(0); }
-  HValue* lo() { return OperandAt(1); }
-
- protected:
-  bool DataEquals(HValue* other) override { return true; }
-
- private:
-  explicit HConstructDouble(HValue* hi, HValue* lo) {
-    set_representation(Representation::Double());
-    SetFlag(kUseGVN);
-    SetOperandAt(0, hi);
-    SetOperandAt(1, lo);
-  }
-
-  bool IsDeletable() const override { return true; }
-};
-
-
 enum RemovableSimulate {
   REMOVABLE_SIMULATE,
   FIXED_SIMULATE
 };
 
 
 class HSimulate final : public HInstruction {
  public:
   HSimulate(BailoutId ast_id, int pop_count, Zone* zone,
             RemovableSimulate removable)
@@ skipping 5453 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_