[flang-commits] [flang] [flang][mlir][fir] Unroll inner loops in presence of user vectorizati… (PR #210820)

[Tom Eccles via flang-commits]

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@@ -221,6 +229,11 @@ void createDefaultFIROptimizerPassPipeline(mlir::PassManager &pm,
   if (pc.LoopVersioning)
     pm.addPass(fir::createLoopVersioning());
 
+  if ((pc.OptLevel == llvm::OptimizationLevel::O2 ||
+       pc.OptLevel == llvm::OptimizationLevel::O3) &&
+      !isVPlanNativePathEnabled())
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tblah wrote:

Maybe we should wait until vplan actually supports this? VPlan might have completely replaced the legacy cost model by then anyway.

But yes I completely agree that once this can be done in the loop vectorizer, it should be done there.

https://github.com/llvm/llvm-project/pull/210820