Revert "ART: Refactor SsaBuilder for more precise typing info"

This reverts commit d9510dfc32349eeb4f2145c801f7ba1d5bccfb12.

Bug: 26208284

Bug: 24252151
Bug: 24252100
Bug: 22538329
Bug: 25786318

Change-Id: I5f491becdf076ff51d437d490405ec4e1586c010

1 files changed, 12 insertions, 7 deletions

diff --git a/compiler/optimizing/graph_visualizer.cc b/compiler/optimizing/graph_visualizer.cc
index 5f1328f545..e9fdb84d1e 100644
--- a/compiler/optimizing/graph_visualizer.cc
+++ b/compiler/optimizing/graph_visualizer.cc
@@ -30,7 +30,6 @@
 #include "optimization.h"
 #include "reference_type_propagation.h"
 #include "register_allocator.h"
-#include "ssa_builder.h"
 #include "ssa_liveness_analysis.h"
 #include "utils/assembler.h"
 
@@ -506,7 +505,7 @@ class HGraphVisualizerPrinter : public HGraphDelegateVisitor {
       } else {
         StartAttributeStream("loop") << "B" << info->GetHeader()->GetBlockId();
       }
-    } else if ((IsPass(SsaBuilder::kSsaBuilderPassName)
+    } else if ((IsPass(ReferenceTypePropagation::kReferenceTypePropagationPassName)
         || IsPass(HInliner::kInlinerPassName))
         && (instruction->GetType() == Primitive::kPrimNot)) {
       ReferenceTypeInfo info = instruction->IsLoadClass()
@@ -520,15 +519,21 @@ class HGraphVisualizerPrinter : public HGraphDelegateVisitor {
         StartAttributeStream("exact") << std::boolalpha << info.IsExact() << std::noboolalpha;
       } else if (instruction->IsLoadClass()) {
         StartAttributeStream("klass") << "unresolved";
-      } else {
+      } else if (instruction->IsNullConstant()) {
         // The NullConstant may be added to the graph during other passes that happen between
         // ReferenceTypePropagation and Inliner (e.g. InstructionSimplifier). If the inliner
         // doesn't run or doesn't inline anything, the NullConstant remains untyped.
         // So we should check NullConstants for validity only after reference type propagation.
-        DCHECK(graph_in_bad_state_ ||
-               (!is_after_pass_ && IsPass(SsaBuilder::kSsaBuilderPassName)))
-            << instruction->DebugName() << instruction->GetId() << " has invalid rti "
-            << (is_after_pass_ ? "after" : "before") << " pass " << pass_name_;
+        //
+        // Note: The infrastructure to properly type NullConstants everywhere is to complex to add
+        // for the benefits.
+        StartAttributeStream("klass") << "not_set";
+        DCHECK(!is_after_pass_
+            || !IsPass(ReferenceTypePropagation::kReferenceTypePropagationPassName))
+            << " Expected a valid rti after reference type propagation";
+      } else {
+        DCHECK(!is_after_pass_)
+            << "Expected a valid rti after reference type propagation";
       }
     }
     if (disasm_info_ != nullptr) {