[llvm] [NewPM][CodeGen] add TargetPassConfig like API (PR #70906)

[Arthur Eubanks via llvm-commits]

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@@ -602,17 +712,47 @@ CodeGenPassBuilder<Derived>::getPassNameFromLegacyName(StringRef Name) const {
   return Ret;
 }
 
+template <typename DerivedT>
+bool llvm::CodeGenPassBuilder<DerivedT>::parseMIRPass(
+    MachineFunctionPassManager &MFPM, StringRef Name) const {
+#define ADD_PASS(NAME, PASS_NAME)                                              \
+  if (Name == NAME) {                                                          \
+    {                                                                          \
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aeubanks wrote:

extra parens?

https://github.com/llvm/llvm-project/pull/70906