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/compiler/optimizing/sharpening.cc b/compiler/optimizing/sharpening.cc
index 97f34e6..b73f738 100644
--- a/compiler/optimizing/sharpening.cc
+++ b/compiler/optimizing/sharpening.cc
@@ -17,6 +17,7 @@
 #include "sharpening.h"
 
 #include "base/casts.h"
+#include "base/enums.h"
 #include "class_linker.h"
 #include "code_generator.h"
 #include "driver/dex_compilation_unit.h"
@@ -259,7 +260,7 @@
       load_class->SetLoadKindWithAddress(load_kind, address);
       break;
     case HLoadClass::LoadKind::kDexCachePcRelative: {
-      size_t pointer_size = InstructionSetPointerSize(codegen_->GetInstructionSet());
+      PointerSize pointer_size = InstructionSetPointerSize(codegen_->GetInstructionSet());
       DexCacheArraysLayout layout(pointer_size, &dex_file);
       size_t element_index = layout.TypeOffset(type_index);
       load_class->SetLoadKindWithDexCacheReference(load_kind, dex_file, element_index);
@@ -358,7 +359,7 @@
       load_string->SetLoadKindWithAddress(load_kind, address);
       break;
     case HLoadString::LoadKind::kDexCachePcRelative: {
-      size_t pointer_size = InstructionSetPointerSize(codegen_->GetInstructionSet());
+      PointerSize pointer_size = InstructionSetPointerSize(codegen_->GetInstructionSet());
       DexCacheArraysLayout layout(pointer_size, &dex_file);
       size_t element_index = layout.StringOffset(string_index);
       load_string->SetLoadKindWithDexCacheReference(load_kind, dex_file, element_index);