[llvm-branch-commits] [llvm] [CodeGen][NPM] Introduce FreeAllAnalysesPass (PR #139517)

[via llvm-branch-commits]

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@@ -45,3 +45,9 @@ MachineFunctionAnalysis::run(Function &F, FunctionAnalysisManager &FAM) {
 
   return Result(std::move(MF));
 }
+
+PreservedAnalyses FreeAllAnalysesPass::run(Function &F,
+                                           FunctionAnalysisManager &FAM) {
+  FAM.clear(F, F.getName());
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paperchalice wrote:

That is too aggressive, `clear` is used when corresponding IR (here is the function) is removed. I'd prefer a full template specialization for `InvalidateAnalysisPass`, which release the machine function and related analysis results.

https://github.com/llvm/llvm-project/pull/139517