[llvm] [RISCV] Add late optimization pass for riscv (PR #133256)

[Michael Maitland via llvm-commits]

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@@ -0,0 +1,190 @@
+//===-- RISCVLateOpt.cpp - Late stage optimization ------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// This file provides RISC-V specific target descriptions.
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michaelmaitland wrote:

Need to fix file description

https://github.com/llvm/llvm-project/pull/133256