diff --git a/src/compiler/instruction.cc b/src/compiler/instruction.cc
index e53414bdb1..c4560b6e76 100644
--- a/src/compiler/instruction.cc
+++ b/src/compiler/instruction.cc
@@ -12,7 +12,8 @@ namespace v8 {
 namespace internal {
 namespace compiler {
 
-const auto GetRegConfig = RegisterConfiguration::Turbofan;
+const RegisterConfiguration* (*GetRegConfig)() =
+    RegisterConfiguration::Turbofan;
 
 FlagsCondition CommuteFlagsCondition(FlagsCondition condition) {
   switch (condition) {
@@ -985,6 +986,21 @@ void InstructionSequence::PrintBlock(int block_id) const {
   PrintBlock(GetRegConfig(), block_id);
 }
 
+const RegisterConfiguration*
+    InstructionSequence::registerConfigurationForTesting_ = nullptr;
+
+const RegisterConfiguration*
+InstructionSequence::RegisterConfigurationForTesting() {
+  DCHECK(registerConfigurationForTesting_ != nullptr);
+  return registerConfigurationForTesting_;
+}
+
+void InstructionSequence::SetRegisterConfigurationForTesting(
+    const RegisterConfiguration* regConfig) {
+  registerConfigurationForTesting_ = regConfig;
+  GetRegConfig = InstructionSequence::RegisterConfigurationForTesting;
+}
+
 FrameStateDescriptor::FrameStateDescriptor(
     Zone* zone, FrameStateType type, BailoutId bailout_id,
     OutputFrameStateCombine state_combine, size_t parameters_count,
diff --git a/src/compiler/instruction.h b/src/compiler/instruction.h
index 872d664f25..e63ceda148 100644
--- a/src/compiler/instruction.h
+++ b/src/compiler/instruction.h
@@ -1570,12 +1570,19 @@ class V8_EXPORT_PRIVATE InstructionSequence final
   void ValidateDeferredBlockEntryPaths() const;
   void ValidateSSA() const;
 
+  static void SetRegisterConfigurationForTesting(
+      const RegisterConfiguration* regConfig);
+  static void ClearRegisterConfigurationForTesting();
+
  private:
   friend V8_EXPORT_PRIVATE std::ostream& operator<<(
       std::ostream& os, const PrintableInstructionSequence& code);
 
   typedef ZoneMap<const Instruction*, SourcePosition> SourcePositionMap;
 
+  static const RegisterConfiguration* RegisterConfigurationForTesting();
+  static const RegisterConfiguration* registerConfigurationForTesting_;
+
   Isolate* isolate_;
   Zone* const zone_;
   InstructionBlocks* const instruction_blocks_;
diff --git a/test/unittests/compiler/instruction-sequence-unittest.cc b/test/unittests/compiler/instruction-sequence-unittest.cc
index e61f690b4e..ee9f7914a6 100644
--- a/test/unittests/compiler/instruction-sequence-unittest.cc
+++ b/test/unittests/compiler/instruction-sequence-unittest.cc
@@ -85,7 +85,7 @@ int InstructionSequenceTest::GetAllocatableCode(int index,
   }
 }
 
-RegisterConfiguration* InstructionSequenceTest::config() {
+const RegisterConfiguration* InstructionSequenceTest::config() {
   if (!config_) {
     config_.reset(new RegisterConfiguration(
         num_general_registers_, num_double_registers_, num_general_registers_,
@@ -105,6 +105,8 @@ InstructionSequence* InstructionSequenceTest::sequence() {
   if (sequence_ == nullptr) {
     sequence_ = new (zone())
         InstructionSequence(isolate(), zone(), &instruction_blocks_);
+    sequence_->SetRegisterConfigurationForTesting(
+        InstructionSequenceTest::config());
   }
   return sequence_;
 }
diff --git a/test/unittests/compiler/instruction-sequence-unittest.h b/test/unittests/compiler/instruction-sequence-unittest.h
index 8424834816..2c4df038fb 100644
--- a/test/unittests/compiler/instruction-sequence-unittest.h
+++ b/test/unittests/compiler/instruction-sequence-unittest.h
@@ -158,7 +158,7 @@ class InstructionSequenceTest : public TestWithIsolateAndZone {
   void SetNumRegs(int num_general_registers, int num_double_registers);
   int GetNumRegs(MachineRepresentation rep);
   int GetAllocatableCode(int index, MachineRepresentation rep = kNoRep);
-  RegisterConfiguration* config();
+  const RegisterConfiguration* config();
   InstructionSequence* sequence();
 
   void StartLoop(int loop_blocks);