A64: Synchronize with r18084.

src/a64/builtins-a64.cc

 // 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 829 matching lines @@
   __ Add(x0, x0, kCodeAgeSequenceSize);
   __ Br(x0);
 }
 
 
 void Builtins::Generate_MarkCodeAsExecutedTwice(MacroAssembler* masm) {
   GenerateMakeCodeYoungAgainCommon(masm);
 }
 
 
-void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
+static void Generate_NotifyStubFailureHelper(MacroAssembler* masm,
+                                             SaveFPRegsMode save_doubles) {
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
 
     // Preserve registers across notification, this is important for compiled
     // stubs that tail call the runtime on deopts passing their parameters in
     // registers.
     // TODO(jbramley): Is it correct (and appropriate) to use safepoint
     // registers here? According to the comment above, we should only need to
     // preserve the registers with parameters.
     __ PushXRegList(kSafepointSavedRegisters);
     // Pass the function and deoptimization type to the runtime system.
     __ CallRuntime(Runtime::kNotifyStubFailure, 0);
     __ PopXRegList(kSafepointSavedRegisters);
   }
 
   // Ignore state (pushed by Deoptimizer::EntryGenerator::Generate).
   __ Drop(1);
 
   // Jump to the miss handler. Deoptimizer::EntryGenerator::Generate loads this
   // into lr before it jumps here.
   __ Br(lr);
 }
 
 
+void Builtins::Generate_NotifyStubFailure(MacroAssembler* masm) {
+  Generate_NotifyStubFailureHelper(masm, kDontSaveFPRegs);
+}
+
+
+void Builtins::Generate_NotifyStubFailureSaveDoubles(MacroAssembler* masm) {
+  Generate_NotifyStubFailureHelper(masm, kSaveFPRegs);
+}
+
+
 static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm,
                                              Deoptimizer::BailoutType type) {
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
     // Pass the deoptimization type to the runtime system.
     __ Mov(x0, Operand(Smi::FromInt(static_cast<int>(type))));
     __ Push(x0);
     __ CallRuntime(Runtime::kNotifyDeoptimized, 1);
   }
 
@@ skipping 592 matching lines @@
   __ Bind(&dont_adapt_arguments);
   __ Jump(x3);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM