A64: Implement patchable inline code for InstanceOfKnownGlobal.

src/a64/macro-assembler-a64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1576 matching lines @@
   // Push and pop the registers that can hold pointers, as defined by the
   // RegList constant kSafepointSavedRegisters.
   void PushSafepointRegisters();
   void PopSafepointRegisters();
 
   // Store value in register src in the safepoint stack slot for register dst.
   void StoreToSafepointRegisterSlot(Register src, Register dst) {
     Poke(src, SafepointRegisterStackIndex(dst.code()) * kPointerSize);
   }
 
+  // Load the value of the src register from its safepoint stack slot
+  // into register dst.
+  void LoadFromSafepointRegisterSlot(Register dst, Register src) {
+    Peek(src, SafepointRegisterStackIndex(dst.code()) * kPointerSize);
+  }
+
   void CheckPageFlagSet(const Register& object,
                         const Register& scratch,
                         int mask,
                         Label* if_any_set);
 
   void CheckPageFlagClear(const Register& object,
                           const Register& scratch,
                           int mask,
                           Label* if_all_clear);
 
@@ skipping 101 matching lines @@
                 Label* has_color,
                 int first_bit,
                 int second_bit);
 
   void JumpIfBlack(Register object,
                    Register scratch0,
                    Register scratch1,
                    Label* on_black);
 
 
+  // Get the location of a relocated constant (its address in the constant pool)
+  // from its load site.
+  void GetRelocatedValueLocation(Register ldr_location,
+                                 Register result);
+
+
   // ---------------------------------------------------------------------------
   // Debugging.
 
   // Calls Abort(msg) if the condition cond is not satisfied.
   // Use --debug_code to enable.
   void Assert(Condition cond, const char* msg);
   void AssertRegisterIsClear(Register reg, const char* msg);
   void AssertRegisterIsRoot(Register reg, Heap::RootListIndex index);
   void AssertFastElements(Register elements);
 
@@ skipping 404 matching lines @@
 #error "Unsupported option"
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 #endif  // V8_A64_MACRO_ASSEMBLER_A64_H_