[llvm] [NewPM][CodeGen][llc] Add NPM support (PR #70922)

[via llvm-commits]

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@@ -452,17 +453,24 @@ class LLVMTargetMachine : public TargetMachine {
 
   virtual Error buildCodeGenPipeline(ModulePassManager &,
                                      MachineFunctionPassManager &,
-                                     MachineFunctionAnalysisManager &,
                                      raw_pwrite_stream &, raw_pwrite_stream *,
                                      CodeGenFileType, CGPassBuilderOption,
+                                     MachineFunctionAnalysisManager &,
                                      PassInstrumentationCallbacks *) {
     return make_error<StringError>("buildCodeGenPipeline is not overridden",
                                    inconvertibleErrorCode());
   }
 
   virtual std::pair<StringRef, bool> getPassNameFromLegacyName(StringRef) {
-    llvm_unreachable(
-        "getPassNameFromLegacyName parseMIRPipeline is not overridden");
+    llvm_unreachable("getPassNameFromLegacyName is not overridden");
+  }
+
+  virtual Error parseMIRPipeline(MachineFunctionPassManager &MFPM,
+                                 StringRef PipelineText,
+                                 CGPassBuilderOption Opts,
+                                 MachineFunctionAnalysisManager &MFAM,
+                                 PassInstrumentationCallbacks *PIC) {
+    llvm_unreachable("parseMIRPipeline is not overridden");
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paperchalice wrote:

Will convert to pure virtual once all patches look good.

https://github.com/llvm/llvm-project/pull/70922