A64: Synchronize with r16849.

src/a64/macro-assembler-a64.h

Index: src/a64/macro-assembler-a64.h
diff --git a/src/a64/macro-assembler-a64.h b/src/a64/macro-assembler-a64.h
index e09f4375d5d4ae5e73da23a551fdb6794a2b84af..61d18ec12d6dd9f1ae56759346b220b0d9dd1bfe 100644
--- a/src/a64/macro-assembler-a64.h
+++ b/src/a64/macro-assembler-a64.h
@@ -797,6 +797,18 @@ class MacroAssembler : public Assembler {
   // Jump to label if the input double register contains -0.0.
   void JumpIfMinusZero(DoubleRegister input, Label* on_negative_zero);
 
+  // Generate code to do a lookup in the number string cache. If the number in
+  // the register object is found in the cache the generated code falls through
+  // with the result in the result register. The object and the result register
+  // can be the same. If the number is not found in the cache the code jumps to
+  // the label not_found with only the content of register object unchanged.
+  void LookupNumberStringCache(Register object,
+                               Register result,
+                               Register scratch1,
+                               Register scratch2,
+                               Register scratch3,
+                               Label* not_found);
+
   // Saturate a signed 32-bit integer in input to an unsigned 8-bit integer in
   // output.
   void ClampInt32ToUint8(Register in_out);
@@ -961,7 +973,8 @@ class MacroAssembler : public Assembler {
                                 Register thunk_last_arg,
                                 int stack_space,
                                 int spill_offset,
-                                int return_value_offset_from_fp);
+                                MemOperand return_value_operand,
+                                MemOperand* context_restore_operand);
 
   // The number of register that CallApiFunctionAndReturn will need to save on
   // the stack. The space for these registers need to be allocated in the
@@ -1538,7 +1551,9 @@ class MacroAssembler : public Assembler {
   //  * The stack pointer is reset to jssp.
   //
   // The stack pointer must be csp on entry.
-  void LeaveExitFrame(bool restore_doubles, const Register& scratch);
+  void LeaveExitFrame(bool save_doubles,
+                      const Register& scratch,
+                      bool restore_context);
 
   void LoadContext(Register dst, int context_chain_length);