Generate some intrinsics using our IR.

runtime/vm/assembler_arm64.h

 // Copyright (c) 2014, 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_ASSEMBLER_ARM64_H_
 #define VM_ASSEMBLER_ARM64_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm64.h directly; use assembler.h instead.
 #endif
@@ skipping 1129 matching lines @@
   // Index of constant pool entries pointing to debugger stubs.
   static const int kICCallBreakpointCPIndex = 5;
   static const int kClosureCallBreakpointCPIndex = 6;
   static const int kRuntimeCallBreakpointCPIndex = 7;
 
   enum Patchability {
     kPatchable,
     kNotPatchable,
   };
 
+  bool allow_constant_pool() const {
+    return allow_constant_pool_;
+  }
+  void set_allow_constant_pool(bool b) {
+    allow_constant_pool_ = b;
+  }
+
   void LoadWordFromPoolOffset(Register dst, Register pp, uint32_t offset);
   void LoadWordFromPoolOffsetFixed(Register dst, Register pp, uint32_t offset);
   intptr_t FindExternalLabel(const ExternalLabel* label,
                              Patchability patchable);
   intptr_t FindObject(const Object& obj, Patchability patchable);
   intptr_t FindImmediate(int64_t imm);
   bool CanLoadObjectFromPool(const Object& object);
   bool CanLoadImmediateFromPool(int64_t imm, Register pp);
   void LoadExternalLabel(Register dst, const ExternalLabel* label,
                          Patchability patchable, Register pp);
@@ skipping 148 matching lines @@
 
    private:
     intptr_t pc_offset_;
     const String& comment_;
 
     DISALLOW_COPY_AND_ASSIGN(CodeComment);
   };
 
   GrowableArray<CodeComment*> comments_;
 
+  bool allow_constant_pool_;
+
   void AddSubHelper(OperandSize os, bool set_flags, bool subtract,
                     Register rd, Register rn, Operand o) {
     ASSERT((rd != R31) && (rn != R31));
     const Register crd = ConcreteRegister(rd);
     const Register crn = ConcreteRegister(rn);
     if (o.type() == Operand::Immediate) {
       ASSERT(rn != ZR);
       EmitAddSubImmOp(subtract ? SUBI : ADDI, crd, crn, o, os, set_flags);
     } else if (o.type() == Operand::Shifted) {
       ASSERT((rd != CSP) && (rn != CSP));
@@ skipping 370 matching lines @@
                                   Register value,
                                   Label* no_update);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM64_H_