[heap] MarkingFromInternalFields write barrier bailout for MinorMC

This CL skips the MarkingFromInternalFields write barrier when
MinorMC concurrent marking is active, because we do not run Oilpan
young GCs yet.

Bug: v8:13012
Change-Id: Ib73dea8357be6d135290009258b5d172477a633b
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3865464Reviewed-by: Omer Katz <omerkatz@chromium.org>
Commit-Queue: Leon Bettscheider <bettscheider@google.com>
Cr-Commit-Position: refs/heads/main@{#82895}

src/heap/heap-write-barrier-inl.h

@@ -11,6 +11,7 @@
 #include "src/common/code-memory-access-inl.h"
 #include "src/common/globals.h"
 #include "src/heap/heap-write-barrier.h"
+#include "src/heap/marking-barrier.h"
 #include "src/objects/code.h"
 #include "src/objects/compressed-slots-inl.h"
 #include "src/objects/fixed-array.h"
@@ -354,6 +355,12 @@ void WriteBarrier::MarkingFromInternalFields(JSObject host) {
   if (V8_ENABLE_THIRD_PARTY_HEAP_BOOL) return;
   auto heap = GetHeapIfMarking(host);
   if (!heap) return;
+  if (CurrentMarkingBarrier(heap.value())->is_minor()) {
+    // TODO(v8:13012): We do not currently mark Oilpan objects while MinorMC is
+    // active. Once Oilpan uses a generational GC with incremental marking and
+    // unified heap, this barrier will be needed again.
+    return;
+  }
   MarkingSlowFromInternalFields(*heap, host);
 }
 

src/heap/marking-barrier.h

@@ -45,6 +45,10 @@ class MarkingBarrier {
   // Returns true if the slot needs to be recorded.
   inline bool MarkValue(HeapObject host, HeapObject value);
 
+  bool is_minor() const {
+    return marking_barrier_type_ == MarkingBarrierType::kMinor;
+  }
+
  private:
   inline bool WhiteToGreyAndPush(HeapObject value);
 
@@ -61,9 +65,6 @@ class MarkingBarrier {
   template <typename TSlot>
   inline void MarkRange(HeapObject value, TSlot start, TSlot end);
 
-  bool is_minor() const {
-    return marking_barrier_type_ == MarkingBarrierType::kMinor;
-  }
   bool is_major() const {
     return marking_barrier_type_ == MarkingBarrierType::kMajor;
   }