Revert "Refactor HGraphBuilder and SsaBuilder to remove HLocals"

Bug: 27995065
This reverts commit e3ff7b293be2a6791fe9d135d660c0cffe4bd73f.

Change-Id: I5363c7ce18f47fd422c15eed5423a345a57249d8
diff --git a/compiler/optimizing/code_generator_arm64.cc b/compiler/optimizing/code_generator_arm64.cc
index 7699ddd..491014d 100644
--- a/compiler/optimizing/code_generator_arm64.cc
+++ b/compiler/optimizing/code_generator_arm64.cc
@@ -1072,6 +1072,31 @@
   }
 }
 
+Location CodeGeneratorARM64::GetStackLocation(HLoadLocal* load) const {
+  Primitive::Type type = load->GetType();
+
+  switch (type) {
+    case Primitive::kPrimNot:
+    case Primitive::kPrimInt:
+    case Primitive::kPrimFloat:
+      return Location::StackSlot(GetStackSlot(load->GetLocal()));
+
+    case Primitive::kPrimLong:
+    case Primitive::kPrimDouble:
+      return Location::DoubleStackSlot(GetStackSlot(load->GetLocal()));
+
+    case Primitive::kPrimBoolean:
+    case Primitive::kPrimByte:
+    case Primitive::kPrimChar:
+    case Primitive::kPrimShort:
+    case Primitive::kPrimVoid:
+      LOG(FATAL) << "Unexpected type " << type;
+  }
+
+  LOG(FATAL) << "Unreachable";
+  return Location::NoLocation();
+}
+
 void CodeGeneratorARM64::MarkGCCard(Register object, Register value, bool value_can_be_null) {
   UseScratchRegisterScope temps(GetVIXLAssembler());
   Register card = temps.AcquireX();
@@ -3985,6 +4010,14 @@
   __ Str(wzr, GetExceptionTlsAddress());
 }
 
+void LocationsBuilderARM64::VisitLoadLocal(HLoadLocal* load) {
+  load->SetLocations(nullptr);
+}
+
+void InstructionCodeGeneratorARM64::VisitLoadLocal(HLoadLocal* load ATTRIBUTE_UNUSED) {
+  // Nothing to do, this is driven by the code generator.
+}
+
 HLoadString::LoadKind CodeGeneratorARM64::GetSupportedLoadStringKind(
     HLoadString::LoadKind desired_string_load_kind) {
   if (kEmitCompilerReadBarrier) {
@@ -4123,6 +4156,14 @@
   }
 }
 
+void LocationsBuilderARM64::VisitLocal(HLocal* local) {
+  local->SetLocations(nullptr);
+}
+
+void InstructionCodeGeneratorARM64::VisitLocal(HLocal* local) {
+  DCHECK_EQ(local->GetBlock(), GetGraph()->GetEntryBlock());
+}
+
 void LocationsBuilderARM64::VisitLongConstant(HLongConstant* constant) {
   LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(constant);
   locations->SetOut(Location::ConstantLocation(constant));
@@ -4515,6 +4556,34 @@
   HandleShift(shr);
 }
 
+void LocationsBuilderARM64::VisitStoreLocal(HStoreLocal* store) {
+  LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(store);
+  Primitive::Type field_type = store->InputAt(1)->GetType();
+  switch (field_type) {
+    case Primitive::kPrimNot:
+    case Primitive::kPrimBoolean:
+    case Primitive::kPrimByte:
+    case Primitive::kPrimChar:
+    case Primitive::kPrimShort:
+    case Primitive::kPrimInt:
+    case Primitive::kPrimFloat:
+      locations->SetInAt(1, Location::StackSlot(codegen_->GetStackSlot(store->GetLocal())));
+      break;
+
+    case Primitive::kPrimLong:
+    case Primitive::kPrimDouble:
+      locations->SetInAt(1, Location::DoubleStackSlot(codegen_->GetStackSlot(store->GetLocal())));
+      break;
+
+    default:
+      LOG(FATAL) << "Unimplemented local type " << field_type;
+      UNREACHABLE();
+  }
+}
+
+void InstructionCodeGeneratorARM64::VisitStoreLocal(HStoreLocal* store ATTRIBUTE_UNUSED) {
+}
+
 void LocationsBuilderARM64::VisitSub(HSub* instruction) {
   HandleBinaryOp(instruction);
 }