Rename kDummy32BitOffset to kPlaceholder32BitOffset.

And drop an obsolete reference to Quick compiler.

Test: m test-art-host-gtest
Bug: 161336379
Change-Id: If08cc0ca83cfeb1c6923c41f9d61766f878a295a
diff --git a/compiler/optimizing/code_generator_x86_64.cc b/compiler/optimizing/code_generator_x86_64.cc
index 2df2d16..2b918f6 100644
--- a/compiler/optimizing/code_generator_x86_64.cc
+++ b/compiler/optimizing/code_generator_x86_64.cc
@@ -1014,19 +1014,19 @@
     case HInvokeStaticOrDirect::MethodLoadKind::kBootImageLinkTimePcRelative:
       DCHECK(GetCompilerOptions().IsBootImage() || GetCompilerOptions().IsBootImageExtension());
       __ leal(temp.AsRegister<CpuRegister>(),
-              Address::Absolute(kDummy32BitOffset, /* no_rip= */ false));
+              Address::Absolute(kPlaceholder32BitOffset, /* no_rip= */ false));
       RecordBootImageMethodPatch(invoke);
       break;
     case HInvokeStaticOrDirect::MethodLoadKind::kBootImageRelRo: {
       // Note: Boot image is in the low 4GiB and the entry is 32-bit, so emit a 32-bit load.
       __ movl(temp.AsRegister<CpuRegister>(),
-              Address::Absolute(kDummy32BitOffset, /* no_rip= */ false));
+              Address::Absolute(kPlaceholder32BitOffset, /* no_rip= */ false));
       RecordBootImageRelRoPatch(GetBootImageOffset(invoke));
       break;
     }
     case HInvokeStaticOrDirect::MethodLoadKind::kBssEntry: {
       __ movq(temp.AsRegister<CpuRegister>(),
-              Address::Absolute(kDummy32BitOffset, /* no_rip= */ false));
+              Address::Absolute(kPlaceholder32BitOffset, /* no_rip= */ false));
       RecordMethodBssEntryPatch(invoke);
       // No need for memory fence, thanks to the x86-64 memory model.
       break;
@@ -1178,10 +1178,12 @@
 
 void CodeGeneratorX86_64::LoadBootImageAddress(CpuRegister reg, uint32_t boot_image_reference) {
   if (GetCompilerOptions().IsBootImage()) {
-    __ leal(reg, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+    __ leal(reg,
+            Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
     RecordBootImageIntrinsicPatch(boot_image_reference);
   } else if (GetCompilerOptions().GetCompilePic()) {
-    __ movl(reg, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+    __ movl(reg,
+            Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
     RecordBootImageRelRoPatch(boot_image_reference);
   } else {
     DCHECK(GetCompilerOptions().IsJitCompiler());
@@ -1201,7 +1203,7 @@
     DCHECK_EQ(boot_image_offset, IntrinsicVisitor::IntegerValueOfInfo::kInvalidReference);
     // Load the class the same way as for HLoadClass::LoadKind::kBootImageLinkTimePcRelative.
     __ leal(argument,
-            Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+            Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
     MethodReference target_method = invoke->GetTargetMethod();
     dex::TypeIndex type_idx = target_method.dex_file->GetMethodId(target_method.index).class_idx_;
     boot_image_type_patches_.emplace_back(target_method.dex_file, type_idx.index_);
@@ -6169,17 +6171,19 @@
       DCHECK(codegen_->GetCompilerOptions().IsBootImage() ||
              codegen_->GetCompilerOptions().IsBootImageExtension());
       DCHECK_EQ(read_barrier_option, kWithoutReadBarrier);
-      __ leal(out, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+      __ leal(out,
+              Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
       codegen_->RecordBootImageTypePatch(cls);
       break;
     case HLoadClass::LoadKind::kBootImageRelRo: {
       DCHECK(!codegen_->GetCompilerOptions().IsBootImage());
-      __ movl(out, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+      __ movl(out,
+              Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
       codegen_->RecordBootImageRelRoPatch(codegen_->GetBootImageOffset(cls));
       break;
     }
     case HLoadClass::LoadKind::kBssEntry: {
-      Address address = Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset,
+      Address address = Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset,
                                           /* no_rip= */ false);
       Label* fixup_label = codegen_->NewTypeBssEntryPatch(cls);
       // /* GcRoot<mirror::Class> */ out = *address  /* PC-relative */
@@ -6196,7 +6200,7 @@
       break;
     }
     case HLoadClass::LoadKind::kJitTableAddress: {
-      Address address = Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset,
+      Address address = Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset,
                                           /* no_rip= */ true);
       Label* fixup_label =
           codegen_->NewJitRootClassPatch(cls->GetDexFile(), cls->GetTypeIndex(), cls->GetClass());
@@ -6323,18 +6327,20 @@
     case HLoadString::LoadKind::kBootImageLinkTimePcRelative: {
       DCHECK(codegen_->GetCompilerOptions().IsBootImage() ||
              codegen_->GetCompilerOptions().IsBootImageExtension());
-      __ leal(out, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+      __ leal(out,
+              Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
       codegen_->RecordBootImageStringPatch(load);
       return;
     }
     case HLoadString::LoadKind::kBootImageRelRo: {
       DCHECK(!codegen_->GetCompilerOptions().IsBootImage());
-      __ movl(out, Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset, /* no_rip= */ false));
+      __ movl(out,
+              Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset, /* no_rip= */ false));
       codegen_->RecordBootImageRelRoPatch(codegen_->GetBootImageOffset(load));
       return;
     }
     case HLoadString::LoadKind::kBssEntry: {
-      Address address = Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset,
+      Address address = Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset,
                                           /* no_rip= */ false);
       Label* fixup_label = codegen_->NewStringBssEntryPatch(load);
       // /* GcRoot<mirror::Class> */ out = *address  /* PC-relative */
@@ -6354,7 +6360,7 @@
       return;
     }
     case HLoadString::LoadKind::kJitTableAddress: {
-      Address address = Address::Absolute(CodeGeneratorX86_64::kDummy32BitOffset,
+      Address address = Address::Absolute(CodeGeneratorX86_64::kPlaceholder32BitOffset,
                                           /* no_rip= */ true);
       Label* fixup_label = codegen_->NewJitRootStringPatch(
           load->GetDexFile(), load->GetStringIndex(), load->GetString());