Call RecordWriteIntoCode in RelocInfo::set_target_cell.

src/ppc/assembler-ppc-inl.h

Index: src/ppc/assembler-ppc-inl.h
diff --git a/src/ppc/assembler-ppc-inl.h b/src/ppc/assembler-ppc-inl.h
index b384d3f4f9683f5bdff9c00bd7d2784277b82c9b..e755ccbad0f2550e99f7011664e2afddf4a7e438 100644
--- a/src/ppc/assembler-ppc-inl.h
+++ b/src/ppc/assembler-ppc-inl.h
@@ -248,9 +248,8 @@ void RelocInfo::set_target_cell(Cell* cell, WriteBarrierMode write_barrier_mode,
   Address address = cell->address() + Cell::kValueOffset;
   Memory::Address_at(pc_) = address;
   if (write_barrier_mode == UPDATE_WRITE_BARRIER && host() != NULL) {
-    // TODO(1550) We are passing NULL as a slot because cell can never be on
-    // evacuation candidate.
-    host()->GetHeap()->incremental_marking()->RecordWrite(host(), NULL, cell);
+    host()->GetHeap()->incremental_marking()->RecordWriteIntoCode(host(), this,
+                                                                  cell);
   }
 }