VM Propagate receiver type from calls to unique selectors in AOT compilation.

runtime/vm/flow_graph_type_propagator.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flow_graph_type_propagator.h"
 
 #include "vm/cha.h"
 #include "vm/bit_vector.h"
 #include "vm/il_printer.h"
 #include "vm/regexp_assembler.h"
@@ skipping 198 matching lines @@
   }
   return NULL;
 }
 
 
 void FlowGraphTypePropagator::VisitValue(Value* value) {
   CompileType* type = TypeOf(value->definition());
   value->SetReachingType(type);
 
   if (FLAG_support_il_printer && FLAG_trace_type_propagation) {
-    THR_Print("reaching type to v%" Pd " for v%" Pd " is %s\n",
-              value->instruction()->IsDefinition() ?
-                  value->instruction()->AsDefinition()->ssa_temp_index() : -1,
+    THR_Print("reaching type to %s for v%" Pd " is %s\n",
+              value->instruction()->ToCString(),
               value->definition()->ssa_temp_index(),
               type->ToCString());
   }
 }
 
 
 void FlowGraphTypePropagator::VisitJoinEntry(JoinEntryInstr* join) {
   for (PhiIterator it(join); !it.Done(); it.Advance()) {
     worklist_.Add(it.Current());
   }
@@ skipping 24 matching lines @@
          check->unary_checks().GetReceiverClassIdAt(0));
 }
 
 
 void FlowGraphTypePropagator::VisitCheckClassId(CheckClassIdInstr* check) {
   // Can't propagate the type/cid because it may cause illegal code motion and
   // we don't track dependencies in all places via redefinitions.
 }
 
 
+void FlowGraphTypePropagator::VisitInstanceCall(InstanceCallInstr* instr) {
+  if (instr->has_unique_selector()) {
+    SetCid(instr->ArgumentAt(0),
+           instr->ic_data()->GetReceiverClassIdAt(0));
+  }
+}
+
+
+void FlowGraphTypePropagator::VisitPolymorphicInstanceCall(
+    PolymorphicInstanceCallInstr* instr) {
+  if (instr->instance_call()->has_unique_selector()) {
+    SetCid(instr->ArgumentAt(0),
+           instr->ic_data().GetReceiverClassIdAt(0));
+  }
+}
+
+
 void FlowGraphTypePropagator::VisitGuardFieldClass(
     GuardFieldClassInstr* guard) {
   const intptr_t cid = guard->field().guarded_cid();
   if ((cid == kIllegalCid) ||
       (cid == kDynamicCid) ||
       Field::IsExternalizableCid(cid)) {
     return;
   }
 
   Definition* def = guard->value()->definition();
@@ skipping 1136 matching lines @@
 CompileType MergedMathInstr::ComputeType() const {
   return CompileType::Dynamic();
 }
 
 
 CompileType ExtractNthOutputInstr::ComputeType() const {
   return CompileType::FromCid(definition_cid_);
 }
 
 }  // namespace dart