[clang] [llvm] [RISCV] Added the MIPS prefetch extensions for MIPS RV64 P8700. (PR #145647)

[Min-Yih Hsu via cfe-commits]

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+; RUN: llc -mtriple=riscv32 -mattr=+xmipscbop -mattr=+m -verify-machineinstrs < %s \
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mshockwave wrote:

Though this is a small test, I would still recommend to use UTC (utils/update_llc_test_checks.py) to generate the FileCheck CHECKS

https://github.com/llvm/llvm-project/pull/145647