[turbofan] Add performance counters for escape analysis

src/crankshaft/hydrogen-escape-analysis.cc

Index: src/crankshaft/hydrogen-escape-analysis.cc
diff --git a/src/crankshaft/hydrogen-escape-analysis.cc b/src/crankshaft/hydrogen-escape-analysis.cc
index 6128fbc973a1dfd8860e3b6cffcec77ecaf6edd8..ab3bff2edcd37a36c1407c44354b990d70a04f69 100644
--- a/src/crankshaft/hydrogen-escape-analysis.cc
+++ b/src/crankshaft/hydrogen-escape-analysis.cc
@@ -142,6 +142,7 @@ HValue* HEscapeAnalysisPhase::NewMapCheckAndInsert(HCapturedObject* state,
 // necessary.
 HValue* HEscapeAnalysisPhase::NewLoadReplacement(
     HLoadNamedField* load, HValue* load_value) {
+  isolate()->counters()->crankshaft_escape_loads_replaced()->Increment();
   HValue* replacement = load_value;
   Representation representation = load->representation();
   if (representation.IsSmiOrInteger32() || representation.IsDouble()) {
@@ -319,6 +320,8 @@ void HEscapeAnalysisPhase::Run() {
   for (int i = 0; i < max_fixpoint_iteration_count; i++) {
     CollectCapturedValues();
     if (captured_.is_empty()) break;
+    isolate()->counters()->crankshaft_escape_allocs_replaced()->Increment(
+        captured_.length());
     PerformScalarReplacement();
     captured_.Rewind(0);
   }