[llvm] [RISCV] Support .option {no}exact (PR #122483)

[Sam Elliott via llvm-commits]

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@@ -0,0 +1,20 @@
+; RUN: llc -mtriple=riscv32 -mattr=+relax,+c %s --filetype=obj -o - \
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lenary wrote:

Done, yeah, this location was a little iffy, happier to have an `llc` test in the CodeGen directory, though this isn't the only one in the MC/RISCV directory

https://github.com/llvm/llvm-project/pull/122483