[llvm] [VPlan] Introduce VPlanConstantFolder (PR #125365)

[Nikita Popov via llvm-commits]

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@@ -0,0 +1,98 @@
+//===- VPlanConstantFolder.h - ConstantFolder for VPlan -------------------===//
+//
+// 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 "VPlanValue.h"
+#include "llvm/IR/ConstantFolder.h"
+
+#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLANCONSTANTFOLDER_H
+#define LLVM_TRANSFORMS_VECTORIZE_VPLANCONSTANTFOLDER_H
+
+namespace llvm {
+class VPConstantFolder {
+private:
+  ConstantFolder Folder;
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nikic wrote:

If you want to do constant folding, then yes, you should thread it into VPlan.

https://github.com/llvm/llvm-project/pull/125365