[llvm-branch-commits] [Clang] Optionally use NewPM to run CodeGen Pipeline (PR #191579)

[Eli Friedman via llvm-branch-commits]

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@@ -1281,6 +1285,73 @@ void EmitAssemblyHelper::RunCodegenPipeline(
   }
 }
 
+void EmitAssemblyHelper::RunCodegenPipelineNewPM(
+    BackendAction Action, std::unique_ptr<raw_pwrite_stream> &OS,
+    std::unique_ptr<llvm::ToolOutputFile> &DwoOS) {
+  if (!actionRequiresCodeGen(Action))
+    return;
+
+  // Normal mode, emit a .s or .o file by running the code generator. Note,
+  // this also adds codegenerator level optimization passes.
+  CodeGenFileType CGFT = getCodeGenFileType(Action);
+
+  // Invoke pre-codegen callback from plugin, which might want to take over the
+  // entire code generation itself.
+  for (const std::unique_ptr<llvm::PassPlugin> &Plugin : CI.getPassPlugins()) {
+    if (Plugin->invokePreCodeGenCallback(*TheModule, *TM, CGFT, *OS))
+      return;
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efriedma-quic wrote:

Please refactor to share the common code.  (It might be hard to share everything, but most of it should be easy.)

https://github.com/llvm/llvm-project/pull/191579