[X86] Remove redundant initialize*Pass in ctor

Author: MaskRay

llvm/lib/Target/X86/X86ArgumentStackSlotRebase.cpp

@@ -40,9 +40,7 @@ class X86ArgumentStackSlotPass : public MachineFunctionPass {
 public:
   static char ID; // Pass identification, replacement for typeid
 
-  explicit X86ArgumentStackSlotPass() : MachineFunctionPass(ID) {
-    initializeX86ArgumentStackSlotPassPass(*PassRegistry::getPassRegistry());
-  }
+  explicit X86ArgumentStackSlotPass() : MachineFunctionPass(ID) {}
 
   bool runOnMachineFunction(MachineFunction &MF) override;
 

llvm/lib/Target/X86/X86LowerAMXType.cpp

@@ -1407,9 +1407,7 @@ class X86LowerAMXTypeLegacyPass : public FunctionPass {
 public:
   static char ID;
 
-  X86LowerAMXTypeLegacyPass() : FunctionPass(ID) {
-    initializeX86LowerAMXTypeLegacyPassPass(*PassRegistry::getPassRegistry());
-  }
+  X86LowerAMXTypeLegacyPass() : FunctionPass(ID) {}
 
   bool runOnFunction(Function &F) override {
     // Performance optimization: most code doesn't use AMX, so return early if