diff --git a/runtime/tests/vm/dart/gc/chunked_binary_trees_array_test.dart b/runtime/tests/vm/dart/gc/chunked_binary_trees_array_test.dart
index 4574719341c..0f94b2a02b4 100644
--- a/runtime/tests/vm/dart/gc/chunked_binary_trees_array_test.dart
+++ b/runtime/tests/vm/dart/gc/chunked_binary_trees_array_test.dart
@@ -6,7 +6,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 
 // Stress test for write barrier elimination that leaves many stores with
diff --git a/runtime/tests/vm/dart/gc/chunked_binary_trees_test.dart b/runtime/tests/vm/dart/gc/chunked_binary_trees_test.dart
index 99cc4bdb70f..fb7c25cf93a 100644
--- a/runtime/tests/vm/dart/gc/chunked_binary_trees_test.dart
+++ b/runtime/tests/vm/dart/gc/chunked_binary_trees_test.dart
@@ -6,7 +6,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 
 // Stress test for write barrier elimination that leaves many stores with
diff --git a/runtime/tests/vm/dart/gc/splay_c_finalizer_test.dart b/runtime/tests/vm/dart/gc/splay_c_finalizer_test.dart
index 6e0c2a551bc..5511c562617 100644
--- a/runtime/tests/vm/dart/gc/splay_c_finalizer_test.dart
+++ b/runtime/tests/vm/dart/gc/splay_c_finalizer_test.dart
@@ -27,7 +27,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart/gc/splay_dart_finalizer_test.dart b/runtime/tests/vm/dart/gc/splay_dart_finalizer_test.dart
index f78f6a4e73a..ee7e6c1a83c 100644
--- a/runtime/tests/vm/dart/gc/splay_dart_finalizer_test.dart
+++ b/runtime/tests/vm/dart/gc/splay_dart_finalizer_test.dart
@@ -27,7 +27,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart/gc/splay_ephemeron_test.dart b/runtime/tests/vm/dart/gc/splay_ephemeron_test.dart
index 4d55277518a..3a7ed8fd081 100644
--- a/runtime/tests/vm/dart/gc/splay_ephemeron_test.dart
+++ b/runtime/tests/vm/dart/gc/splay_ephemeron_test.dart
@@ -29,7 +29,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart/gc/splay_test.dart b/runtime/tests/vm/dart/gc/splay_test.dart
index c688b36800b..be4175ecba2 100644
--- a/runtime/tests/vm/dart/gc/splay_test.dart
+++ b/runtime/tests/vm/dart/gc/splay_test.dart
@@ -27,7 +27,6 @@
 // VMOptions=--profiler --verify_store_buffer
 // VMOptions=--profiler --verify_after_marking
 // VMOptions=--profiler --stress_write_barrier_elimination
-// VMOptions=--profiler --no_eliminate_write_barriers
 // VMOptions=--profiler --no_inline_alloc
 // VMOptions=--profiler --old_gen_heap_size=100
 // VMOptions=--profiler --mark_when_idle
diff --git a/runtime/tests/vm/dart/gc/splay_weak_test.dart b/runtime/tests/vm/dart/gc/splay_weak_test.dart
index f9f446a0a3e..7112a0bb5fb 100644
--- a/runtime/tests/vm/dart/gc/splay_weak_test.dart
+++ b/runtime/tests/vm/dart/gc/splay_weak_test.dart
@@ -27,7 +27,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart_2/gc/splay_c_finalizer_test.dart b/runtime/tests/vm/dart_2/gc/splay_c_finalizer_test.dart
index 57b19c1f98c..e65e9812755 100644
--- a/runtime/tests/vm/dart_2/gc/splay_c_finalizer_test.dart
+++ b/runtime/tests/vm/dart_2/gc/splay_c_finalizer_test.dart
@@ -31,7 +31,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart_2/gc/splay_dart_finalizer_test.dart b/runtime/tests/vm/dart_2/gc/splay_dart_finalizer_test.dart
index f66981706f4..06d2144cd6c 100644
--- a/runtime/tests/vm/dart_2/gc/splay_dart_finalizer_test.dart
+++ b/runtime/tests/vm/dart_2/gc/splay_dart_finalizer_test.dart
@@ -31,7 +31,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart_2/gc/splay_ephemeron_test.dart b/runtime/tests/vm/dart_2/gc/splay_ephemeron_test.dart
index a7c8db91ef4..5fed0a22840 100644
--- a/runtime/tests/vm/dart_2/gc/splay_ephemeron_test.dart
+++ b/runtime/tests/vm/dart_2/gc/splay_ephemeron_test.dart
@@ -33,7 +33,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/tests/vm/dart_2/gc/splay_test.dart b/runtime/tests/vm/dart_2/gc/splay_test.dart
index 9c087e10f2a..2a6e6e73906 100644
--- a/runtime/tests/vm/dart_2/gc/splay_test.dart
+++ b/runtime/tests/vm/dart_2/gc/splay_test.dart
@@ -31,7 +31,6 @@
 // VMOptions=--profiler --verify_store_buffer
 // VMOptions=--profiler --verify_after_marking
 // VMOptions=--profiler --stress_write_barrier_elimination
-// VMOptions=--profiler --no_eliminate_write_barriers
 // VMOptions=--profiler --no_inline_alloc
 // VMOptions=--profiler --old_gen_heap_size=100
 // VMOptions=--profiler --mark_when_idle
diff --git a/runtime/tests/vm/dart_2/gc/splay_weak_test.dart b/runtime/tests/vm/dart_2/gc/splay_weak_test.dart
index f201e3483ff..f0ec591d258 100644
--- a/runtime/tests/vm/dart_2/gc/splay_weak_test.dart
+++ b/runtime/tests/vm/dart_2/gc/splay_weak_test.dart
@@ -31,7 +31,6 @@
 // VMOptions=--verify_store_buffer
 // VMOptions=--verify_after_marking
 // VMOptions=--stress_write_barrier_elimination
-// VMOptions=--no_eliminate_write_barriers
 // VMOptions=--no_inline_alloc
 // VMOptions=--old_gen_heap_size=150
 
diff --git a/runtime/vm/compiler/compiler_pass.cc b/runtime/vm/compiler/compiler_pass.cc
index 37a9f8bb45a..192a845fd5b 100644
--- a/runtime/vm/compiler/compiler_pass.cc
+++ b/runtime/vm/compiler/compiler_pass.cc
@@ -585,11 +585,7 @@ COMPILER_PASS(ReorderBlocks, {
   }
 });
 
-COMPILER_PASS(EliminateWriteBarriers, {
-  if (FLAG_eliminate_write_barriers) {
-    EliminateWriteBarriers(flow_graph);
-  }
-});
+COMPILER_PASS(EliminateWriteBarriers, { EliminateWriteBarriers(flow_graph); });
 
 COMPILER_PASS(FinalizeGraph, {
   // At the end of the pipeline, force recomputing and caching graph
diff --git a/runtime/vm/flag_list.h b/runtime/vm/flag_list.h
index b1cebaba768..92264e535b1 100644
--- a/runtime/vm/flag_list.h
+++ b/runtime/vm/flag_list.h
@@ -246,8 +246,6 @@ constexpr bool FLAG_support_il_printer = false;
     "Enable magical pragmas for testing purposes. Use at your own risk!")      \
   R(eliminate_type_checks, true, bool, true,                                   \
     "Eliminate type checks when allowed by static type analysis.")             \
-  P(eliminate_write_barriers, bool, true,                                      \
-    "Eliminate write barriers when allowed by allocation invariants.")         \
   D(support_rr, bool, false, "Support running within RR.")                     \
   P(verify_entry_points, bool, false,                                          \
     "Throw API error on invalid member access through native API. See "        \
diff --git a/runtime/vm/thread.cc b/runtime/vm/thread.cc
index 4a529c152c2..e53d8b62c61 100644
--- a/runtime/vm/thread.cc
+++ b/runtime/vm/thread.cc
@@ -1023,7 +1023,6 @@ class RestoreWriteBarrierInvariantVisitor : public ObjectPointerVisitor {
 void Thread::RestoreWriteBarrierInvariant(RestoreWriteBarrierInvariantOp op) {
   ASSERT(IsAtSafepoint() || OwnsGCSafepoint());
   ASSERT(IsDartMutatorThread());
-  if (!FLAG_eliminate_write_barriers) return;
 
   const StackFrameIterator::CrossThreadPolicy cross_thread_policy =
       StackFrameIterator::kAllowCrossThreadIteration;