A64: Implement patchable inline code for InstanceOfKnownGlobal.

src/a64/assembler-a64.h

Index: src/a64/assembler-a64.h
diff --git a/src/a64/assembler-a64.h b/src/a64/assembler-a64.h
index 8a11e52057872660ce47b087a9ed39a8eedb20db..da91c9f06b1a622bcc08203b8078c6b4e96d8efd 100644
--- a/src/a64/assembler-a64.h
+++ b/src/a64/assembler-a64.h
@@ -1694,6 +1694,10 @@ class Assembler : public AssemblerBase {
   // Check if is time to emit a constant pool.
   void CheckConstPool(bool force_emit, bool require_jump);
 
+  // Available for constrained code generation scopes. Prefer
+  // MacroAssembler::Mov() when possible.
+  inline void LoadRelocated(const CPURegister& rt, const Operand& operand);
+
  protected:
   inline const Register& AppropriateZeroRegFor(const CPURegister& reg) const;
 
@@ -1750,8 +1754,6 @@ class Assembler : public AssemblerBase {
               AddSubOp op);
   static bool IsImmAddSub(int64_t immediate);
 
-  inline void LoadRelocated(const CPURegister& rt, const Operand& operand);
-
   static bool IsImmFP32(float imm);
   static bool IsImmFP64(double imm);