ART: Convert pointer size to enum

Move away from size_t to dedicated enum (class).

Bug: 30373134
Bug: 30419309
Test: m test-art-host
Change-Id: Id453c330f1065012e7d4f9fc24ac477cc9bb9269
diff --git a/runtime/mirror/dex_cache-inl.h b/runtime/mirror/dex_cache-inl.h
index 0b3461f..84469ea 100644
--- a/runtime/mirror/dex_cache-inl.h
+++ b/runtime/mirror/dex_cache-inl.h
@@ -22,6 +22,7 @@
 #include "art_field-inl.h"
 #include "art_method-inl.h"
 #include "base/casts.h"
+#include "base/enums.h"
 #include "base/logging.h"
 #include "mirror/class.h"
 #include "runtime.h"
@@ -29,7 +30,7 @@
 namespace art {
 namespace mirror {
 
-inline uint32_t DexCache::ClassSize(size_t pointer_size) {
+inline uint32_t DexCache::ClassSize(PointerSize pointer_size) {
   uint32_t vtable_entries = Object::kVTableLength + 5;
   return Class::ComputeClassSize(true, vtable_entries, 0, 0, 0, 0, 0, pointer_size);
 }
@@ -60,7 +61,7 @@
   Runtime::Current()->GetHeap()->WriteBarrierEveryFieldOf(this);
 }
 
-inline ArtField* DexCache::GetResolvedField(uint32_t field_idx, size_t ptr_size) {
+inline ArtField* DexCache::GetResolvedField(uint32_t field_idx, PointerSize ptr_size) {
   DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), ptr_size);
   DCHECK_LT(field_idx, NumResolvedFields());  // NOTE: Unchecked, i.e. not throwing AIOOB.
   ArtField* field = GetElementPtrSize(GetResolvedFields(), field_idx, ptr_size);
@@ -70,13 +71,13 @@
   return field;
 }
 
-inline void DexCache::SetResolvedField(uint32_t field_idx, ArtField* field, size_t ptr_size) {
+inline void DexCache::SetResolvedField(uint32_t field_idx, ArtField* field, PointerSize ptr_size) {
   DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), ptr_size);
   DCHECK_LT(field_idx, NumResolvedFields());  // NOTE: Unchecked, i.e. not throwing AIOOB.
   SetElementPtrSize(GetResolvedFields(), field_idx, field, ptr_size);
 }
 
-inline ArtMethod* DexCache::GetResolvedMethod(uint32_t method_idx, size_t ptr_size) {
+inline ArtMethod* DexCache::GetResolvedMethod(uint32_t method_idx, PointerSize ptr_size) {
   DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), ptr_size);
   DCHECK_LT(method_idx, NumResolvedMethods());  // NOTE: Unchecked, i.e. not throwing AIOOB.
   ArtMethod* method = GetElementPtrSize<ArtMethod*>(GetResolvedMethods(), method_idx, ptr_size);
@@ -88,19 +89,20 @@
   return method;
 }
 
-inline void DexCache::SetResolvedMethod(uint32_t method_idx, ArtMethod* method, size_t ptr_size) {
+inline void DexCache::SetResolvedMethod(uint32_t method_idx,
+                                        ArtMethod* method,
+                                        PointerSize ptr_size) {
   DCHECK_EQ(Runtime::Current()->GetClassLinker()->GetImagePointerSize(), ptr_size);
   DCHECK_LT(method_idx, NumResolvedMethods());  // NOTE: Unchecked, i.e. not throwing AIOOB.
   SetElementPtrSize(GetResolvedMethods(), method_idx, method, ptr_size);
 }
 
 template <typename PtrType>
-inline PtrType DexCache::GetElementPtrSize(PtrType* ptr_array, size_t idx, size_t ptr_size) {
-  if (ptr_size == 8u) {
+inline PtrType DexCache::GetElementPtrSize(PtrType* ptr_array, size_t idx, PointerSize ptr_size) {
+  if (ptr_size == PointerSize::k64) {
     uint64_t element = reinterpret_cast<const uint64_t*>(ptr_array)[idx];
     return reinterpret_cast<PtrType>(dchecked_integral_cast<uintptr_t>(element));
   } else {
-    DCHECK_EQ(ptr_size, 4u);
     uint32_t element = reinterpret_cast<const uint32_t*>(ptr_array)[idx];
     return reinterpret_cast<PtrType>(dchecked_integral_cast<uintptr_t>(element));
   }
@@ -110,12 +112,11 @@
 inline void DexCache::SetElementPtrSize(PtrType* ptr_array,
                                         size_t idx,
                                         PtrType ptr,
-                                        size_t ptr_size) {
-  if (ptr_size == 8u) {
+                                        PointerSize ptr_size) {
+  if (ptr_size == PointerSize::k64) {
     reinterpret_cast<uint64_t*>(ptr_array)[idx] =
         dchecked_integral_cast<uint64_t>(reinterpret_cast<uintptr_t>(ptr));
   } else {
-    DCHECK_EQ(ptr_size, 4u);
     reinterpret_cast<uint32_t*>(ptr_array)[idx] =
         dchecked_integral_cast<uint32_t>(reinterpret_cast<uintptr_t>(ptr));
   }