Collect type profile for DevTools.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 052f29367dadd6a4fa1b5fca9948f9ffe4c66a41..f67e7b927c28e4a9502c50b1ae98b1c652d48cf9 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -2211,18 +2211,34 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
   LhsKind assign_type = Property::GetAssignType(property);
 
   // Evaluate LHS expression.
+  Register lhs_name;
+  if (expr->HasTypeProfileSlot()) {
+    lhs_name = register_allocator()->NewRegister();
+  }
+
   switch (assign_type) {
     case VARIABLE:
+      if (expr->HasTypeProfileSlot()) {
+        builder()
+            ->LoadLiteral(expr->target()->AsVariableProxy()->var()->raw_name())
+            .StoreAccumulatorInRegister(lhs_name);
+      }
       // Nothing to do to evaluate variable assignment LHS.
       break;
     case NAMED_PROPERTY: {
       object = VisitForRegisterValue(property->obj());
       name = property->key()->AsLiteral()->AsRawPropertyName();
+      if (expr->HasTypeProfileSlot()) {
+        builder()->LoadLiteral(name).StoreAccumulatorInRegister(lhs_name);
+      }
       break;
     }
     case KEYED_PROPERTY: {
       object = VisitForRegisterValue(property->obj());
       key = VisitForRegisterValue(property->key());
+      if (expr->HasTypeProfileSlot()) {
+        builder()->StoreAccumulatorInRegister(lhs_name);
+      }
       break;
     }
     case NAMED_SUPER_PROPERTY: {
@@ -2235,6 +2251,9 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
       builder()
           ->LoadLiteral(property->key()->AsLiteral()->AsRawPropertyName())
           .StoreAccumulatorInRegister(super_property_args[2]);
+      if (expr->HasTypeProfileSlot()) {
+        builder()->StoreAccumulatorInRegister(lhs_name);
+      }
       break;
     }
     case KEYED_SUPER_PROPERTY: {
@@ -2245,6 +2264,10 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
       VisitForRegisterValue(super_property->home_object(),
                             super_property_args[1]);
       VisitForRegisterValue(property->key(), super_property_args[2]);
+      if (expr->HasTypeProfileSlot()) {
+        builder()->StoreAccumulatorInRegister(lhs_name);
+      }
+
       break;
     }
   }
@@ -2333,6 +2356,14 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) {
       break;
     }
   }
+
+  // Value is in accumulator.
+  if (expr->HasTypeProfileSlot()) {
+    FeedbackSlot collect_type_feedback_slot = expr->TypeProfileSlot();
+
+    builder()->CollectTypeProfile(lhs_name,
+                                  feedback_index(collect_type_feedback_slot));
+  }
 }
 
 void BytecodeGenerator::VisitYield(Yield* expr) {