[llvm] [RISC-V] Fix incorrect epilogue_begin (PR #120623)

[Mikhail Gudim via llvm-commits]

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@@ -0,0 +1,50 @@
+; RUN: llc -mtriple=riscv64 < %s | FileCheck %s
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mgudim wrote:

can you generate the checks with "update_llc_test_checks.py"?

https://github.com/llvm/llvm-project/pull/120623