[heap] Minor MC: Add evacuation phase

src/heap/heap.cc

Index: src/heap/heap.cc
diff --git a/src/heap/heap.cc b/src/heap/heap.cc
index 9f52767120039ec90fb44d8da71dbb1decd4502c..2a83ec622801f1a2fe0da03a4a6c3d9f572c9267 100644
--- a/src/heap/heap.cc
+++ b/src/heap/heap.cc
@@ -1445,7 +1445,10 @@ void Heap::MarkCompact() {
   }
 }
 
-void Heap::MinorMarkCompact() { UNREACHABLE(); }
+void Heap::MinorMarkCompact() {
+  TRACE_GC(tracer(), GCTracer::Scope::MINOR_MC);
+  mark_compact_collector()->CollectGarbageInYoungGeneration();
+}
 
 void Heap::MarkCompactEpilogue() {
   TRACE_GC(tracer(), GCTracer::Scope::MC_EPILOGUE);