diff --git a/llvm/lib/Target/CSKY/AsmParser/CSKYAsmParser.cpp b/llvm/lib/Target/CSKY/AsmParser/CSKYAsmParser.cpp
index 317a0a301a006..19f33f38cbfd3 100644
--- a/llvm/lib/Target/CSKY/AsmParser/CSKYAsmParser.cpp
+++ b/llvm/lib/Target/CSKY/AsmParser/CSKYAsmParser.cpp
@@ -13,6 +13,7 @@
 #include "TargetInfo/CSKYTargetInfo.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/Statistic.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/BinaryFormat/ELF.h"
 #include "llvm/CodeGen/Register.h"
diff --git a/llvm/lib/Target/DirectX/DXContainerGlobals.cpp b/llvm/lib/Target/DirectX/DXContainerGlobals.cpp
index a75c79a71bcb1..56063b487f684 100644
--- a/llvm/lib/Target/DirectX/DXContainerGlobals.cpp
+++ b/llvm/lib/Target/DirectX/DXContainerGlobals.cpp
@@ -12,6 +12,7 @@
 
 #include "DXILShaderFlags.h"
 #include "DirectX.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/BinaryFormat/DXContainer.h"
 #include "llvm/CodeGen/Passes.h"
diff --git a/llvm/lib/Target/SPIRV/SPIRVBuiltins.cpp b/llvm/lib/Target/SPIRV/SPIRVBuiltins.cpp
index 40b652057e87f..c53f1643adc06 100644
--- a/llvm/lib/Target/SPIRV/SPIRVBuiltins.cpp
+++ b/llvm/lib/Target/SPIRV/SPIRVBuiltins.cpp
@@ -14,6 +14,7 @@
 #include "SPIRVBuiltins.h"
 #include "SPIRV.h"
 #include "SPIRVUtils.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/Analysis/ValueTracking.h"
 #include "llvm/IR/IntrinsicsSPIRV.h"
 #include <string>