[llvm] [NewPM] Port x86-winehstate (PR #180687)

[Aiden Grossman via llvm-commits]

================
@@ -38,23 +38,18 @@ using namespace llvm;
 namespace {
 const int OverdefinedState = INT_MIN;
 
-class WinEHStatePass : public FunctionPass {
-public:
-  static char ID; // Pass identification, replacement for typeid.
-
-  WinEHStatePass() : FunctionPass(ID) {}
-
-  bool runOnFunction(Function &Fn) override;
+constexpr StringRef X86WinEHStatePassName =
+    "Windows 32-bit x86 EH state insertion";
 
-  bool doInitialization(Module &M) override;
+class WinEHStateFnPassImpl {
+public:
+  WinEHStateFnPassImpl() = default;
 
-  bool doFinalization(Module &M) override;
+  bool init(Module &M);
----------------
boomanaiden154 wrote:

Nit: Consistent word style here with `finalize`, maybe `initialize`?

https://github.com/llvm/llvm-project/pull/180687