[NFC][LLVM][DirectX] Cleanup pass initialization for DirectX (#134419)

- Remove calls to pass initialization from pass constructors.
- #111767

Author: jurahul

llvm/lib/Target/DirectX/DXContainerGlobals.cpp

@@ -51,9 +51,7 @@ class DXContainerGlobals : public llvm::ModulePass {
 
 public:
   static char ID; // Pass identification, replacement for typeid
-  DXContainerGlobals() : ModulePass(ID) {
-    initializeDXContainerGlobalsPass(*PassRegistry::getPassRegistry());
-  }
+  DXContainerGlobals() : ModulePass(ID) {}
 
   StringRef getPassName() const override {
     return "DXContainer Global Emitter";

llvm/lib/Target/DirectX/DXILPrettyPrinter.cpp

@@ -262,13 +262,8 @@ class DXILPrettyPrinterLegacy : public llvm::ModulePass {
 
 public:
   static char ID;
-  DXILPrettyPrinterLegacy() : ModulePass(ID), OS(dbgs()) {
-    initializeDXILPrettyPrinterLegacyPass(*PassRegistry::getPassRegistry());
-  }
 
-  explicit DXILPrettyPrinterLegacy(raw_ostream &O) : ModulePass(ID), OS(O) {
-    initializeDXILPrettyPrinterLegacyPass(*PassRegistry::getPassRegistry());
-  }
+  explicit DXILPrettyPrinterLegacy(raw_ostream &O) : ModulePass(ID), OS(O) {}
 
   StringRef getPassName() const override {
     return "DXIL Metadata Pretty Printer";

llvm/lib/Target/DirectX/DirectXTargetMachine.cpp

@@ -64,6 +64,7 @@ extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeDirectXTarget() {
   initializeShaderFlagsAnalysisWrapperPass(*PR);
   initializeRootSignatureAnalysisWrapperPass(*PR);
   initializeDXILFinalizeLinkageLegacyPass(*PR);
+  initializeDXILPrettyPrinterLegacyPass(*PR);
 }
 
 class DXILTargetObjectFile : public TargetLoweringObjectFile {