Add more safe points in compiler

runtime/vm/heap.cc

Index: runtime/vm/heap.cc
diff --git a/runtime/vm/heap.cc b/runtime/vm/heap.cc
index 15bc62fc5aebb01d5c12e48866ac98c86ffb1b37..534dc434f536a39468a3436037328b9638b506cb 100644
--- a/runtime/vm/heap.cc
+++ b/runtime/vm/heap.cc
@@ -761,7 +761,7 @@ void Heap::PrintStats() {
     "%" Pd ", %" Pd ", "  // old gen: in use before/after
     "%" Pd ", %" Pd ", "  // old gen: capacity before/after
     "%" Pd ", %" Pd ", "  // old gen: external before/after
-    "%.3f, %.3f, %.3f, %.3f, "  // times
+    "%.3f, %.3f, %.3f, %.3f, %.3f, "  // times
     "%" Pd ", %" Pd ", %" Pd ", %" Pd ", "  // data
     "]\n",  // End with a comma to make it easier to import in spreadsheets.
     isolate()->main_port(), space_str, GCReasonToString(stats_.reason_),
@@ -785,6 +785,7 @@ void Heap::PrintStats() {
     MicrosecondsToMilliseconds(stats_.times_[1]),
     MicrosecondsToMilliseconds(stats_.times_[2]),
     MicrosecondsToMilliseconds(stats_.times_[3]),
+    MicrosecondsToMilliseconds(stats_.times_[4]),
     stats_.data_[0],
     stats_.data_[1],
     stats_.data_[2],