[llvm] [LSR] Split the -lsr-term-fold transformation into it's own pass (PR #104234)

[Philip Reames via llvm-commits]

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@@ -0,0 +1,380 @@
+//===- LoopTermFold.cpp - Eliminate last use of IV in exit branch----------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/Transforms/Scalar/LoopTermFold.h"
+#include "llvm/ADT/Statistic.h"
+#include "llvm/Analysis/LoopAnalysisManager.h"
+#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/LoopPass.h"
+#include "llvm/Analysis/MemorySSA.h"
+#include "llvm/Analysis/MemorySSAUpdater.h"
+#include "llvm/Analysis/ScalarEvolution.h"
+#include "llvm/Analysis/ScalarEvolutionExpressions.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/CodeGen/Passes.h"
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preames wrote:

This can be removed.  It was needed with my first approach, but using the pass pipeline flag isn't needed.  I agree, it is a layering violation which is why I switched approaches.

https://github.com/llvm/llvm-project/pull/104234