Add double unary operation (negate). This is a replica of the destrpyed CL https://chromiumcoderevi…

runtime/vm/intermediate_language.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_INTERMEDIATE_LANGUAGE_H_
 #define VM_INTERMEDIATE_LANGUAGE_H_
 
 #include "vm/allocation.h"
 #include "vm/ast.h"
 #include "vm/growable_array.h"
@@ skipping 563 matching lines @@
   M(LoadUntagged)                                                              \
   M(LoadClassId)                                                               \
   M(InstantiateType)                                                           \
   M(InstantiateTypeArguments)                                                  \
   M(ExtractConstructorTypeArguments)                                           \
   M(ExtractConstructorInstantiator)                                            \
   M(AllocateContext)                                                           \
   M(CloneContext)                                                              \
   M(BinarySmiOp)                                                               \
   M(UnarySmiOp)                                                                \
+  M(UnaryDoubleOp)                                                             \
   M(CheckStackOverflow)                                                        \
   M(SmiToDouble)                                                               \
   M(DoubleToInteger)                                                           \
   M(DoubleToSmi)                                                               \
   M(DoubleToDouble)                                                            \
   M(CheckClass)                                                                \
   M(CheckSmi)                                                                  \
   M(Constant)                                                                  \
   M(CheckEitherNonSmi)                                                         \
   M(BinaryDoubleOp)                                                            \
@@ skipping 319 matching lines @@
   friend class Float32x4TwoArgShuffleInstr;
   friend class Uint32x4BoolConstructorInstr;
   friend class Uint32x4GetFlagInstr;
   friend class Uint32x4SetFlagInstr;
   friend class Uint32x4SelectInstr;
   friend class Uint32x4ToFloat32x4Instr;
   friend class BinaryUint32x4OpInstr;
   friend class BinaryMintOpInstr;
   friend class BinarySmiOpInstr;
   friend class UnarySmiOpInstr;
+  friend class UnaryDoubleOpInstr;
   friend class ShiftMintOpInstr;
   friend class UnaryMintOpInstr;
   friend class MathUnaryInstr;
   friend class MathMinMaxInstr;
   friend class CheckClassInstr;
   friend class GuardFieldInstr;
   friend class CheckSmiInstr;
   friend class CheckArrayBoundInstr;
   friend class CheckEitherNonSmiInstr;
   friend class LICM;
@@ skipping 3774 matching lines @@
 
 class BinaryDoubleOpInstr : public TemplateDefinition<2> {
  public:
   BinaryDoubleOpInstr(Token::Kind op_kind,
                       Value* left,
                       Value* right,
                       intptr_t deopt_id)
       : op_kind_(op_kind) {
     SetInputAt(0, left);
     SetInputAt(1, right);
-    // Overrided generated deopt_id.
+    // Overriden generated deopt_id.
     deopt_id_ = deopt_id;
   }
 
   Value* left() const { return inputs_[0]; }
   Value* right() const { return inputs_[1]; }
 
   Token::Kind op_kind() const { return op_kind_; }
 
   virtual void PrintOperandsTo(BufferFormatter* f) const;
 
@@ skipping 1318 matching lines @@
 
   virtual bool MayThrow() const { return false; }
 
  private:
   const Token::Kind op_kind_;
 
   DISALLOW_COPY_AND_ASSIGN(UnarySmiOpInstr);
 };
 
 
+// Handles only NEGATE.
+class UnaryDoubleOpInstr : public TemplateDefinition<1> {
+ public:
+  UnaryDoubleOpInstr(Token::Kind op_kind,
+                     Value* value,
+                     intptr_t deopt_id)
+      : op_kind_(op_kind) {
+    ASSERT(op_kind == Token::kNEGATE);
+    SetInputAt(0, value);
+    // Overriden generated deopt_id.
+    deopt_id_ = deopt_id;
+  }
+
+  Value* value() const { return inputs_[0]; }
+  Token::Kind op_kind() const { return op_kind_; }
+
+  virtual void PrintOperandsTo(BufferFormatter* f) const;
+
+  DECLARE_INSTRUCTION(UnaryDoubleOp)
+  virtual CompileType ComputeType() const;
+
+  virtual bool CanDeoptimize() const { return false; }
+
+  virtual intptr_t DeoptimizationTarget() const {
+    // Direct access since this instruction cannot deoptimize, and the deopt-id
+    // was inherited from another instruction that could deoptimize.
+    return deopt_id_;
+  }
+
+  virtual Representation representation() const {
+    return kUnboxedDouble;
+  }
+
+  virtual Representation RequiredInputRepresentation(intptr_t idx) const {
+    ASSERT(idx == 0);
+    return kUnboxedDouble;
+  }
+
+  virtual bool AllowsCSE() const { return true; }
+  virtual EffectSet Effects() const { return EffectSet::None(); }
+  virtual EffectSet Dependencies() const { return EffectSet::None(); }
+  virtual bool AttributesEqual(Instruction* other) const { return true; }
+
+  virtual bool MayThrow() const { return false; }
+
+ private:
+  const Token::Kind op_kind_;
+
+  DISALLOW_COPY_AND_ASSIGN(UnaryDoubleOpInstr);
+};
+
+
 class CheckStackOverflowInstr : public TemplateInstruction<0> {
  public:
   CheckStackOverflowInstr(intptr_t token_pos, intptr_t loop_depth)
       : token_pos_(token_pos), loop_depth_(loop_depth) {}
 
   intptr_t token_pos() const { return token_pos_; }
   bool in_loop() const { return loop_depth_ > 0; }
   intptr_t loop_depth() const { return loop_depth_; }
 
   DECLARE_INSTRUCTION(CheckStackOverflow)
@@ skipping 555 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_