vector-based ICs did not update type feedback counts correctly.

src/runtime-profiler.cc

Index: src/runtime-profiler.cc
diff --git a/src/runtime-profiler.cc b/src/runtime-profiler.cc
index d6099d43be86001892e3f97e74bd08cca981da1c..f786846b365ba1cc43ac04a4803dbeef8c803a92 100644
--- a/src/runtime-profiler.cc
+++ b/src/runtime-profiler.cc
@@ -57,9 +57,11 @@ RuntimeProfiler::RuntimeProfiler(Isolate* isolate)
 }
 
 
-static void GetICCounts(Code* shared_code, int* ic_with_type_info_count,
-                        int* ic_generic_count, int* ic_total_count,
-                        int* type_info_percentage, int* generic_percentage) {
+static void GetICCounts(SharedFunctionInfo* shared,
+                        int* ic_with_type_info_count, int* ic_generic_count,
+                        int* ic_total_count, int* type_info_percentage,
+                        int* generic_percentage) {
+  Code* shared_code = shared->code();
   *ic_total_count = 0;
   *ic_generic_count = 0;
   *ic_with_type_info_count = 0;
@@ -70,6 +72,12 @@ static void GetICCounts(Code* shared_code, int* ic_with_type_info_count,
     *ic_generic_count = info->ic_generic_count();
     *ic_total_count = info->ic_total_count();
   }
+
+  // Harvest vector-ics as well
+  TypeFeedbackVector* vector = shared->feedback_vector();
+  *ic_with_type_info_count += vector->ic_with_type_info_count();
+  *ic_generic_count += vector->ic_generic_count();
+
   if (*ic_total_count > 0) {
     *type_info_percentage = 100 * *ic_with_type_info_count / *ic_total_count;
     *generic_percentage = 100 * *ic_generic_count / *ic_total_count;
@@ -89,7 +97,7 @@ void RuntimeProfiler::Optimize(JSFunction* function, const char* reason) {
     PrintF(" for recompilation, reason: %s", reason);
     if (FLAG_type_info_threshold > 0) {
       int typeinfo, generic, total, type_percentage, generic_percentage;
-      GetICCounts(function->shared()->code(), &typeinfo, &generic, &total,
+      GetICCounts(function->shared(), &typeinfo, &generic, &total,
                   &type_percentage, &generic_percentage);
       PrintF(", ICs with typeinfo: %d/%d (%d%%)", typeinfo, total,
              type_percentage);
@@ -236,7 +244,7 @@ void RuntimeProfiler::OptimizeNow() {
 
     if (ticks >= kProfilerTicksBeforeOptimization) {
       int typeinfo, generic, total, type_percentage, generic_percentage;
-      GetICCounts(shared_code, &typeinfo, &generic, &total, &type_percentage,
+      GetICCounts(shared, &typeinfo, &generic, &total, &type_percentage,
                   &generic_percentage);
       if (type_percentage >= FLAG_type_info_threshold &&
           generic_percentage <= FLAG_generic_ic_threshold) {
@@ -259,7 +267,7 @@ void RuntimeProfiler::OptimizeNow() {
       // If no IC was patched since the last tick and this function is very
       // small, optimistically optimize it now.
       int typeinfo, generic, total, type_percentage, generic_percentage;
-      GetICCounts(shared_code, &typeinfo, &generic, &total, &type_percentage,
+      GetICCounts(shared, &typeinfo, &generic, &total, &type_percentage,
                   &generic_percentage);
       if (type_percentage >= FLAG_type_info_threshold &&
           generic_percentage <= FLAG_generic_ic_threshold) {