Rename callee save enumerators.

And related image method enumerators, macros, etc.
Clean up some entrypoint assembly comments.

This is a follow-up to
    https://android-review.googlesource.com/252348

Test: Run ART test suite on host and Nexus 9.
Bug: 30212852
Change-Id: I2707342d4255c88c547655be83ed97a67e12ae9e
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
index 9678079..c67379a 100644
--- a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
@@ -46,7 +46,7 @@
   static constexpr size_t kBytesStackArgLocation = 4;
   // Frame size in bytes of a callee-save frame for RefsAndArgs.
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_FrameSize =
-      GetCalleeSaveFrameSize(kRuntimeISA, Runtime::kRefsAndArgs);
+      GetCalleeSaveFrameSize(kRuntimeISA, Runtime::kSaveRefsAndArgs);
 #if defined(__arm__)
   // The callee save frame is pointed to by SP.
   // | argN       |  |
@@ -75,11 +75,11 @@
   static constexpr size_t kNumQuickFprArgs = kArm32QuickCodeUseSoftFloat ? 0 : 16;
   static constexpr bool kGprFprLockstep = false;
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Fpr1Offset =
-      arm::ArmCalleeSaveFpr1Offset(Runtime::kRefsAndArgs);  // Offset of first FPR arg.
+      arm::ArmCalleeSaveFpr1Offset(Runtime::kSaveRefsAndArgs);  // Offset of first FPR arg.
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset =
-      arm::ArmCalleeSaveGpr1Offset(Runtime::kRefsAndArgs);  // Offset of first GPR arg.
+      arm::ArmCalleeSaveGpr1Offset(Runtime::kSaveRefsAndArgs);  // Offset of first GPR arg.
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_LrOffset =
-      arm::ArmCalleeSaveLrOffset(Runtime::kRefsAndArgs);  // Offset of return address.
+      arm::ArmCalleeSaveLrOffset(Runtime::kSaveRefsAndArgs);  // Offset of return address.
   static size_t GprIndexToGprOffset(uint32_t gpr_index) {
     return gpr_index * GetBytesPerGprSpillLocation(kRuntimeISA);
   }
@@ -113,11 +113,11 @@
   static constexpr size_t kNumQuickFprArgs = 8;  // 8 arguments passed in FPRs.
   static constexpr bool kGprFprLockstep = false;
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Fpr1Offset =
-      arm64::Arm64CalleeSaveFpr1Offset(Runtime::kRefsAndArgs);  // Offset of first FPR arg.
+      arm64::Arm64CalleeSaveFpr1Offset(Runtime::kSaveRefsAndArgs);  // Offset of first FPR arg.
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_Gpr1Offset =
-      arm64::Arm64CalleeSaveGpr1Offset(Runtime::kRefsAndArgs);  // Offset of first GPR arg.
+      arm64::Arm64CalleeSaveGpr1Offset(Runtime::kSaveRefsAndArgs);  // Offset of first GPR arg.
   static constexpr size_t kQuickCalleeSaveFrame_RefAndArgs_LrOffset =
-      arm64::Arm64CalleeSaveLrOffset(Runtime::kRefsAndArgs);  // Offset of return address.
+      arm64::Arm64CalleeSaveLrOffset(Runtime::kSaveRefsAndArgs);  // Offset of return address.
   static size_t GprIndexToGprOffset(uint32_t gpr_index) {
     return gpr_index * GetBytesPerGprSpillLocation(kRuntimeISA);
   }
@@ -307,7 +307,7 @@
 
   static ArtMethod* GetCallingMethod(ArtMethod** sp) SHARED_REQUIRES(Locks::mutator_lock_) {
     DCHECK((*sp)->IsCalleeSaveMethod());
-    return GetCalleeSaveMethodCaller(sp, Runtime::kRefsAndArgs);
+    return GetCalleeSaveMethodCaller(sp, Runtime::kSaveRefsAndArgs);
   }
 
   static ArtMethod* GetOuterMethod(ArtMethod** sp) SHARED_REQUIRES(Locks::mutator_lock_) {
@@ -319,7 +319,7 @@
 
   static uint32_t GetCallingDexPc(ArtMethod** sp) SHARED_REQUIRES(Locks::mutator_lock_) {
     DCHECK((*sp)->IsCalleeSaveMethod());
-    const size_t callee_frame_size = GetCalleeSaveFrameSize(kRuntimeISA, Runtime::kRefsAndArgs);
+    const size_t callee_frame_size = GetCalleeSaveFrameSize(kRuntimeISA, Runtime::kSaveRefsAndArgs);
     ArtMethod** caller_sp = reinterpret_cast<ArtMethod**>(
         reinterpret_cast<uintptr_t>(sp) + callee_frame_size);
     uintptr_t outer_pc = QuickArgumentVisitor::GetCallingPc(sp);
@@ -2054,7 +2054,7 @@
 static TwoWordReturn artInvokeCommon(uint32_t method_idx, mirror::Object* this_object, Thread* self,
                                      ArtMethod** sp) {
   ScopedQuickEntrypointChecks sqec(self);
-  DCHECK_EQ(*sp, Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs));
+  DCHECK_EQ(*sp, Runtime::Current()->GetCalleeSaveMethod(Runtime::kSaveRefsAndArgs));
   ArtMethod* caller_method = QuickArgumentVisitor::GetCallingMethod(sp);
   ArtMethod* method = FindMethodFast(method_idx, this_object, caller_method, access_check, type);
   if (UNLIKELY(method == nullptr)) {