Revert "Optimize code generation of check-cast and instance-of."

Failures with libcore tests.

This reverts commit 64acf303eaa2f32c0b1d8cfcbf044a822c5eec08.

Change-Id: Ie6f323fcf5d86bae5c334c1352bb21f1bad60a88
diff --git a/compiler/optimizing/code_generator_mips64.cc b/compiler/optimizing/code_generator_mips64.cc
index 07ecdc1..d521d78 100644
--- a/compiler/optimizing/code_generator_mips64.cc
+++ b/compiler/optimizing/code_generator_mips64.cc
@@ -2327,7 +2327,7 @@
 
 void LocationsBuilderMIPS64::VisitInstanceOf(HInstanceOf* instruction) {
   LocationSummary::CallKind call_kind =
-      instruction->IsExactCheck() ? LocationSummary::kNoCall : LocationSummary::kCallOnSlowPath;
+      instruction->IsClassFinal() ? LocationSummary::kNoCall : LocationSummary::kCallOnSlowPath;
   LocationSummary* locations = new (GetGraph()->GetArena()) LocationSummary(instruction, call_kind);
   locations->SetInAt(0, Location::RequiresRegister());
   locations->SetInAt(1, Location::RequiresRegister());
@@ -2351,7 +2351,7 @@
 
   // Compare the class of `obj` with `cls`.
   __ LoadFromOffset(kLoadUnsignedWord, out, obj, mirror::Object::ClassOffset().Int32Value());
-  if (instruction->IsExactCheck()) {
+  if (instruction->IsClassFinal()) {
     // Classes must be equal for the instanceof to succeed.
     __ Xor(out, out, cls);
     __ Sltiu(out, out, 1);