Introduce InvokeMathCFunction that can be used to directly invoke mathematical function provided by…

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 30 matching lines @@
   V(_StringBase, get:length, StringBaseLength, 320803993)                      \
   V(_StringBase, get:isEmpty, StringBaseIsEmpty, 711547329)                    \
   V(_StringBase, charCodeAt, StringBaseCharCodeAt, 984449525)                  \
   V(_StringBase, [], StringBaseCharAt, 1062366987)                             \
   V(_IntegerImplementation, toDouble, IntegerToDouble, 733149324)              \
   V(_Double, toInt, DoubleToInteger, 362666636)                                \
   V(_Double, truncate, DoubleTruncate, 620870996)                              \
   V(_Double, round, DoubleRound, 620870996)                                    \
   V(_Double, floor, DoubleFloor, 620870996)                                    \
   V(_Double, ceil, DoubleCeil, 620870996)                                      \
+  V(_Double, pow, DoublePow, 1131958048)                                       \
   V(::, sqrt, MathSqrt, 1662640002)                                            \
 
 // Class that recognizes the name and owner of a function and returns the
 // corresponding enum. See RECOGNIZED_LIST above for list of recognizable
 // functions.
 class MethodRecognizer : public AllStatic {
  public:
   enum Kind {
     kUnknown,
 #define DEFINE_ENUM_LIST(class_name, function_name, enum_name, fp) k##enum_name,
@@ skipping 206 matching lines @@
   M(MathSqrt)                                                                  \
   M(UnboxDouble)                                                               \
   M(BoxDouble)                                                                 \
   M(UnboxInteger)                                                              \
   M(BoxInteger)                                                                \
   M(BinaryMintOp)                                                              \
   M(ShiftMintOp)                                                               \
   M(UnaryMintOp)                                                               \
   M(CheckArrayBound)                                                           \
   M(Constraint)                                                                \
-  M(StringFromCharCode)
+  M(StringFromCharCode)                                                        \
+  M(InvokeMathCFunction)                                                       \
 
 
 #define FORWARD_DECLARATION(type) class type##Instr;
 FOR_EACH_INSTRUCTION(FORWARD_DECLARATION)
 #undef FORWARD_DECLARATION
 
 
 // Functions required in all concrete instruction classes.
 #define DECLARE_INSTRUCTION(type)                                              \
   virtual Tag tag() const { return k##type; }                                  \
@@ skipping 220 matching lines @@
   friend class ShiftMintOpInstr;
   friend class UnaryMintOpInstr;
   friend class MathSqrtInstr;
   friend class CheckClassInstr;
   friend class CheckSmiInstr;
   friend class CheckArrayBoundInstr;
   friend class CheckEitherNonSmiInstr;
   friend class LICM;
   friend class DoubleToSmiInstr;
   friend class DoubleToDoubleInstr;
+  friend class InvokeMathCFunctionInstr;
 
   intptr_t deopt_id_;
   intptr_t lifetime_position_;  // Position used by register allocator.
   Instruction* previous_;
   Instruction* next_;
   Environment* env_;
   intptr_t expr_id_;
 
   DISALLOW_COPY_AND_ASSIGN(Instruction);
 };
@@ skipping 3521 matching lines @@
 
   virtual intptr_t DeoptimizationTarget() const { return deopt_id_; }
 
  private:
   const MethodRecognizer::Kind recognized_kind_;
 
   DISALLOW_COPY_AND_ASSIGN(DoubleToDoubleInstr);
 };
 
 
+class InvokeMathCFunctionInstr : public Definition {
+ public:
+  InvokeMathCFunctionInstr(ZoneGrowableArray<Value*>* inputs,
+                           InstanceCallInstr* instance_call,
+                           MethodRecognizer::Kind recognized_kind)
+    : inputs_(inputs), locs_(NULL), recognized_kind_(recognized_kind) {
+    ASSERT(inputs_->length() == ArgumentCountFor(recognized_kind_));
+    deopt_id_ = instance_call->deopt_id();
+  }
+
+  static intptr_t ArgumentCountFor(MethodRecognizer::Kind recognized_kind_);
+
+  const RuntimeEntry& TargetFunction() const;
+
+  MethodRecognizer::Kind recognized_kind() const { return recognized_kind_; }
+
+  DECLARE_INSTRUCTION(InvokeMathCFunction)
+  virtual RawAbstractType* CompileType() const;
+  virtual void PrintOperandsTo(BufferFormatter* f) const;
+
+  virtual bool CanDeoptimize() const { return false; }
+
+  virtual bool HasSideEffect() const { return false; }
+
+  virtual intptr_t ResultCid() const { return kDoubleCid; }
+
+  virtual Representation representation() const {
+    return kUnboxedDouble;
+  }
+
+  virtual Representation RequiredInputRepresentation(intptr_t idx) const {
+    ASSERT((0 <= idx) && (idx < InputCount()));
+    return kUnboxedDouble;
+  }
+
+  virtual intptr_t DeoptimizationTarget() const { return deopt_id_; }
+
+  virtual intptr_t InputCount() const {
+    return inputs_->length();
+  }
+
+  virtual Value* InputAt(intptr_t i) const {
+    return (*inputs_)[i];
+  }
+
+  virtual void SetInputAt(intptr_t i, Value* value) {
+    ASSERT(value != NULL);
+    (*inputs_)[i] = value;
+  }
+
+  // Returns a structure describing the location constraints required
+  // to emit native code for this definition.
+  LocationSummary* locs() {
+    if (locs_ == NULL) {
+      locs_ = MakeLocationSummary();
+    }
+    return locs_;
+  }
+
+ private:
+  ZoneGrowableArray<Value*>* inputs_;
+
+  LocationSummary* locs_;
+
+  const MethodRecognizer::Kind recognized_kind_;
+
+  DISALLOW_COPY_AND_ASSIGN(InvokeMathCFunctionInstr);
+};
+
+
 class CheckClassInstr : public TemplateInstruction<1> {
  public:
   CheckClassInstr(Value* value,
                   intptr_t deopt_id,
                   const ICData& unary_checks);
 
   DECLARE_INSTRUCTION(CheckClass)
   virtual RawAbstractType* CompileType() const;
 
   virtual intptr_t ArgumentCount() const { return 0; }
@@ skipping 316 matching lines @@
   ForwardInstructionIterator* current_iterator_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(FlowGraphVisitor);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_INTERMEDIATE_LANGUAGE_H_