ARM64: push/pop registers in stubs for safepoints

src/arm64/macro-assembler-arm64.cc

Index: src/arm64/macro-assembler-arm64.cc
diff --git a/src/arm64/macro-assembler-arm64.cc b/src/arm64/macro-assembler-arm64.cc
index d7d0ab7502308f2687beb126076c70e4e3ca1905..9814a631b01fedbe6936109a105e0bfd3943d539 100644
--- a/src/arm64/macro-assembler-arm64.cc
+++ b/src/arm64/macro-assembler-arm64.cc
@@ -4161,15 +4161,17 @@ void MacroAssembler::PushSafepointRegisters() {
 }
 
 
-void MacroAssembler::PushSafepointFPRegisters() {
+void MacroAssembler::PushSafepointRegistersAndDoubles() {
+  PushSafepointRegisters();
   PushCPURegList(CPURegList(CPURegister::kFPRegister, kDRegSizeInBits,
                             FPRegister::kAllocatableFPRegisters));
 }
 
 
-void MacroAssembler::PopSafepointFPRegisters() {
+void MacroAssembler::PopSafepointRegistersAndDoubles() {
   PopCPURegList(CPURegList(CPURegister::kFPRegister, kDRegSizeInBits,
                            FPRegister::kAllocatableFPRegisters));
+  PopSafepointRegisters();
 }
 
 
@@ -5118,6 +5120,14 @@ CPURegister UseScratchRegisterScope::AcquireNextAvailable(
 }
 
 
+CPURegister UseScratchRegisterScope::UnsafeAcquire(CPURegList* available,
+                                                   const CPURegister& reg) {
+  ASSERT(available->IncludesAliasOf(reg));
+  available->Remove(reg);
+  return reg;
+}
+
+
 #define __ masm->