[llvm] [DAGCombiner] Share byte provider steps with AMDGPU target (PR #221959)

[Arseniy Obolenskiy via llvm-commits]

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@@ -0,0 +1,45 @@
+//===-- ByteProvider.cpp -------------------------------------------------===//
+//
+// 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/CodeGen/ByteProvider.h"
+
+using namespace llvm;
+
+std::optional<ByteProvider>
+llvm::calculateByteProviderForOr(SDValue Op, unsigned Index,
+                                 SDByteProviderRecurseFn Recurse) {
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aobolensk wrote:

reworked

https://github.com/llvm/llvm-project/pull/221959