add preserved

Author: joaosaffran

llvm/lib/Target/DirectX/DXContainerGlobals.cpp

@@ -62,10 +62,10 @@ class DXContainerGlobals : public llvm::ModulePass {
   void getAnalysisUsage(AnalysisUsage &AU) const override {
     AU.setPreservesAll();
     AU.addRequired<ShaderFlagsAnalysisWrapper>();
-    AU.addRequired<RootSignatureAnalysisWrapper>();
     AU.addRequired<DXILMetadataAnalysisWrapperPass>();
     AU.addRequired<DXILResourceTypeWrapperPass>();
     AU.addRequired<DXILResourceWrapperPass>();
+    AU.addPreserved<RootSignatureAnalysisWrapper>();
   }
 };
 

llvm/test/CodeGen/DirectX/llc-pipeline.ll

@@ -40,7 +40,6 @@
 ; CHECK-ASM-NEXT: Print Module IR
 
 ; CHECK-OBJ-NEXT: DXIL Embedder
-; CHECK-OBJ-NEXT: DXIL Root Signature Analysis
 ; CHECK-OBJ-NEXT: DXContainer Global Emitter
 ; CHECK-OBJ-NEXT: FunctionPass Manager
 ; CHECK-OBJ-NEXT:   Lazy Machine Block Frequency Analysis