[llvm] [NewPM/CodeGen] Rewrite pass manager nesting (PR #81068)

[via llvm-commits]

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@@ -182,49 +147,46 @@ int llvm::compileModuleWithNewPM(
       return 1;
     }
 
-    ExitOnErr(PB.parsePassPipeline(MFPM, PassPipeline));
+    ExitOnErr(PB.parsePassPipeline(MPM, PassPipeline));
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paperchalice wrote:

Users now can run IR passes in llc. Should we accept only codegen ir passes here?

https://github.com/llvm/llvm-project/pull/81068