================
@@ -7135,6 +7135,10 @@ PreservedAnalyses LoopStrengthReducePass::run(Loop &L,
LoopAnalysisManager &AM,
if (!ReduceLoopStrength(&L, AM.getResult<IVUsersAnalysis>(L, AR), AR.SE,
AR.DT, AR.LI, AR.TTI, AR.AC, AR.TLI, AR.MSSA))
return PreservedAnalyses::all();
+
+ // TODO: Remove this once the LSR handles LCSSA preservation completely.
+ if (auto *OuterLoop = L.getOutermostLoop())
+ formLCSSARecursively(*OuterLoop, AR.DT, &AR.LI, &AR.SE);
----------------
boomanaiden154 wrote:
It would be good to have actual compile time results then (ideally from
https://llvm-compile-time-tracker.com/). If the difference isn't small (<0.1%),
we probably need to figure out a better way to do this.
https://github.com/llvm/llvm-project/pull/176692
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