[llvm] [NewPM][CodeGen] Add `FunctionToMachineFunctionAnalysis` (PR #88610)
Arthur Eubanks via llvm-commits
llvm-commits at lists.llvm.org
Mon Apr 22 10:47:10 PDT 2024
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@@ -76,6 +76,10 @@ struct MachinePassModel
#endif
auto PA = this->Pass.run(IR, AM);
+ // Machine function passes are not allowed to modify the LLVM
+ // representation, therefore we should preserve all IR analyses.
+ PA.template preserveSet<AllAnalysesOn<Module>>();
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aeubanks wrote:
we shouldn't put this here because it's not required to go through a MachinePassModel to run a pass, you can always manually run a MachineFunctionPass.
as mentioned before, we should have a helper method similar to `getLoopPassPreservedAnalyses()` that every machine function pass must use as its return value
https://github.com/llvm/llvm-project/pull/88610
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