[lld] [llvm] [LTO][lld] Emit textual assembly code with '--save-temps' (PR #195922)

[Teresa Johnson via llvm-commits]

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@@ -423,6 +426,31 @@ static void codegen(const Config &Conf, TargetMachine *TM,
   if (Conf.PreCodeGenModuleHook && !Conf.PreCodeGenModuleHook(Task, Mod))
     return;
 
+  if (!Conf.SaveTempsAsmPrefix.empty()) {
+    std::string PathPrefix;
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teresajohnson wrote:

For consistency, can you move this into addSaveTemps and make into a hook that can be called here, rather than inline this handling into codegen? It should also honor SaveModulesList. I guess if you must call CloneModule then you need a new hook type that takes a TM (or change the original one to take it as an optional?). The path handling and file opening code can be refactored out and shared between the hook setup lambdas.

https://github.com/llvm/llvm-project/pull/195922