Revert "Do not update the type of something we already know."

This reverts commit 30eb58c548bee08468f68eb140a74a51dd7d9b43.

Change-Id: Icd959e868160fc3ee7031dd2927554ac5b21d40f

4 files changed, 1 insertions, 40 deletions

diff --git a/compiler/optimizing/graph_checker.cc b/compiler/optimizing/graph_checker.cc
index 9679d0ab70..d7e6bd8161 100644
--- a/compiler/optimizing/graph_checker.cc
+++ b/compiler/optimizing/graph_checker.cc
@@ -257,7 +257,6 @@ void GraphChecker::VisitInvokeStaticOrDirect(HInvokeStaticOrDirect* invoke) {
 }
 
 void GraphChecker::VisitReturn(HReturn* ret) {
-  VisitInstruction(ret);
   if (!ret->GetBlock()->GetSingleSuccessor()->IsExitBlock()) {
     AddError(StringPrintf("%s:%d does not jump to the exit block.",
                           ret->DebugName(),
@@ -266,7 +265,6 @@ void GraphChecker::VisitReturn(HReturn* ret) {
 }
 
 void GraphChecker::VisitReturnVoid(HReturnVoid* ret) {
-  VisitInstruction(ret);
   if (!ret->GetBlock()->GetSingleSuccessor()->IsExitBlock()) {
     AddError(StringPrintf("%s:%d does not jump to the exit block.",
                           ret->DebugName(),
@@ -274,30 +272,6 @@ void GraphChecker::VisitReturnVoid(HReturnVoid* ret) {
   }
 }
 
-void GraphChecker::VisitCheckCast(HCheckCast* check) {
-  VisitInstruction(check);
-  HInstruction* input = check->InputAt(1);
-  if (!input->IsLoadClass()) {
-    AddError(StringPrintf("%s:%d expects a HLoadClass as second input, not %s:%d.",
-                          check->DebugName(),
-                          check->GetId(),
-                          input->DebugName(),
-                          input->GetId()));
-  }
-}
-
-void GraphChecker::VisitInstanceOf(HInstanceOf* instruction) {
-  VisitInstruction(instruction);
-  HInstruction* input = instruction->InputAt(1);
-  if (!input->IsLoadClass()) {
-    AddError(StringPrintf("%s:%d expects a HLoadClass as second input, not %s:%d.",
-                          instruction->DebugName(),
-                          instruction->GetId(),
-                          input->DebugName(),
-                          input->GetId()));
-  }
-}
-
 void SSAChecker::VisitBasicBlock(HBasicBlock* block) {
   super_type::VisitBasicBlock(block);
 
diff --git a/compiler/optimizing/graph_checker.h b/compiler/optimizing/graph_checker.h
index 7c72e23e2d..bafa69d422 100644
--- a/compiler/optimizing/graph_checker.h
+++ b/compiler/optimizing/graph_checker.h
@@ -48,10 +48,6 @@ class GraphChecker : public HGraphDelegateVisitor {
   // Check that the HasBoundsChecks() flag is set for bounds checks.
   void VisitBoundsCheck(HBoundsCheck* check) OVERRIDE;
 
-  // Check that HCheckCast and HInstanceOf have HLoadClass as second input.
-  void VisitCheckCast(HCheckCast* check) OVERRIDE;
-  void VisitInstanceOf(HInstanceOf* check) OVERRIDE;
-
   // Check that the Return and ReturnVoid jump to the exit block.
   void VisitReturn(HReturn* ret) OVERRIDE;
   void VisitReturnVoid(HReturnVoid* ret) OVERRIDE;
diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc
index c41574c93c..30d61ef040 100644
--- a/compiler/optimizing/graph_visualizer.cc
+++ b/compiler/optimizing/graph_visualizer.cc
@@ -462,7 +462,7 @@ class HGraphVisualizerPrinter : public HGraphVisitor {
           ReferenceTypeInfo info = instruction->AsLoadClass()->GetLoadedClassRTI();
           ScopedObjectAccess soa(Thread::Current());
           if (info.GetTypeHandle().GetReference() != nullptr) {
-            StartAttributeStream("klass") << PrettyClass(info.GetTypeHandle().Get());
+            StartAttributeStream("klass") << info.GetTypeHandle().Get();
           } else {
             StartAttributeStream("klass") << "unresolved";
           }
diff --git a/compiler/optimizing/reference_type_propagation.cc b/compiler/optimizing/reference_type_propagation.cc
index 3d6606b8dc..67840984b1 100644
--- a/compiler/optimizing/reference_type_propagation.cc
+++ b/compiler/optimizing/reference_type_propagation.cc
@@ -151,15 +151,6 @@ void ReferenceTypePropagation::BoundTypeForIfInstanceOf(HBasicBlock* block) {
   HBoundType* bound_type = nullptr;
 
   HInstruction* obj = instanceOf->InputAt(0);
-  if (obj->GetReferenceTypeInfo().IsExact() && !obj->IsPhi()) {
-    // This method is being called while doing a fixed-point calculation
-    // over phis. Non-phis instruction whose type is already known do
-    // not need to be bound to another type.
-    // Not that this also prevents replacing `HLoadClass` with a `HBoundType`.
-    // `HCheckCast` and `HInstanceOf` expect a `HLoadClass` as a second
-    // input.
-    return;
-  }
   for (HUseIterator<HInstruction*> it(obj->GetUses()); !it.Done(); it.Advance()) {
     HInstruction* user = it.Current()->GetUser();
     if (instanceOfTrueBlock->Dominates(user->GetBlock())) {