[llvm] [LV] Remove unused requiresScalarEpilogue function. nfc (PR #135341)

[Mel Chen via llvm-commits]

https://github.com/Mel-Chen created https://github.com/llvm/llvm-project/pull/135341

None

>From c1fe35dd27c94bbdbf02fb2fec2fbba4828b7e9a Mon Sep 17 00:00:00 2001
From: Mel Chen <mel.chen at sifive.com>
Date: Fri, 11 Apr 2025 02:54:09 -0700
Subject: [PATCH] [LV] Remove unused requiresScalarEpilogue function. nfc

---
 llvm/lib/Transforms/Vectorize/LoopVectorize.cpp | 15 ---------------
 1 file changed, 15 deletions(-)

diff --git a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
index a4d546f698d5f..d1ec4c63c32ca 100644
--- a/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ b/llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -1373,21 +1373,6 @@ class LoopVectorizationCostModel {
     return false;
   }
 
-  /// Returns true if we're required to use a scalar epilogue for at least
-  /// the final iteration of the original loop for all VFs in \p Range.
-  /// A scalar epilogue must either be required for all VFs in \p Range or for
-  /// none.
-  bool requiresScalarEpilogue(VFRange Range) const {
-    auto RequiresScalarEpilogue = [this](ElementCount VF) {
-      return requiresScalarEpilogue(VF.isVector());
-    };
-    bool IsRequired = all_of(Range, RequiresScalarEpilogue);
-    assert(
-        (IsRequired || none_of(Range, RequiresScalarEpilogue)) &&
-        "all VFs in range must agree on whether a scalar epilogue is required");
-    return IsRequired;
-  }
-
   /// Returns true if a scalar epilogue is not allowed due to optsize or a
   /// loop hint annotation.
   bool isScalarEpilogueAllowed() const {