diff --git a/llvm/lib/Target/AArch64/AArch64TargetMachine.h b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
index 2c75a3258c1c..fefa7e26b79f 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetMachine.h
+++ b/llvm/lib/Target/AArch64/AArch64TargetMachine.h
@@ -36,6 +36,7 @@ public:
 
   ~AArch64TargetMachine() override;
   const AArch64Subtarget *getSubtargetImpl(const Function &F) const override;
+  const AArch64Subtarget *getSubtargetImpl() const = delete;
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
diff --git a/llvm/lib/Target/PowerPC/PPCTargetMachine.h b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
index 5eb6ba785d1b..2dc3828334ac 100644
--- a/llvm/lib/Target/PowerPC/PPCTargetMachine.h
+++ b/llvm/lib/Target/PowerPC/PPCTargetMachine.h
@@ -41,6 +41,7 @@ public:
   ~PPCTargetMachine() override;
 
   const PPCSubtarget *getSubtargetImpl(const Function &F) const override;
+  const PPCSubtarget *getSubtargetImpl() const = delete;
 
   // Pass Pipeline Configuration
   TargetPassConfig *createPassConfig(PassManagerBase &PM) override;
diff --git a/llvm/lib/Target/X86/X86TargetMachine.h b/llvm/lib/Target/X86/X86TargetMachine.h
index 1bf267d34ec2..aaa6d58bd134 100644
--- a/llvm/lib/Target/X86/X86TargetMachine.h
+++ b/llvm/lib/Target/X86/X86TargetMachine.h
@@ -40,6 +40,7 @@ public:
   ~X86TargetMachine() override;
 
   const X86Subtarget *getSubtargetImpl(const Function &F) const override;
+  const X86Subtarget *getSubtargetImpl() const = delete;
 
   TargetIRAnalysis getTargetIRAnalysis() override;