diff --git a/compiler/optimizing/codegen_test_utils.h b/compiler/optimizing/codegen_test_utils.h
index 9fbd7d6..9d15f1f 100644
--- a/compiler/optimizing/codegen_test_utils.h
+++ b/compiler/optimizing/codegen_test_utils.h
@@ -313,25 +313,25 @@
 }
 
 #ifdef ART_ENABLE_CODEGEN_arm
-CodeGenerator* create_codegen_arm_vixl32(HGraph* graph, const CompilerOptions& compiler_options) {
+inline CodeGenerator* create_codegen_arm_vixl32(HGraph* graph, const CompilerOptions& compiler_options) {
   return new (graph->GetAllocator()) TestCodeGeneratorARMVIXL(graph, compiler_options);
 }
 #endif
 
 #ifdef ART_ENABLE_CODEGEN_arm64
-CodeGenerator* create_codegen_arm64(HGraph* graph, const CompilerOptions& compiler_options) {
+inline CodeGenerator* create_codegen_arm64(HGraph* graph, const CompilerOptions& compiler_options) {
   return new (graph->GetAllocator()) TestCodeGeneratorARM64(graph, compiler_options);
 }
 #endif
 
 #ifdef ART_ENABLE_CODEGEN_x86
-CodeGenerator* create_codegen_x86(HGraph* graph, const CompilerOptions& compiler_options) {
+inline CodeGenerator* create_codegen_x86(HGraph* graph, const CompilerOptions& compiler_options) {
   return new (graph->GetAllocator()) TestCodeGeneratorX86(graph, compiler_options);
 }
 #endif
 
 #ifdef ART_ENABLE_CODEGEN_x86_64
-CodeGenerator* create_codegen_x86_64(HGraph* graph, const CompilerOptions& compiler_options) {
+inline CodeGenerator* create_codegen_x86_64(HGraph* graph, const CompilerOptions& compiler_options) {
   return new (graph->GetAllocator()) x86_64::CodeGeneratorX86_64(graph, compiler_options);
 }
 #endif