[llvm] [MIR2Vec] Add embedder for machine instructions (PR #162161)

[S. VenkataKeerthy via llvm-commits]

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+# REQUIRES: x86_64-linux
+# RUN: llc -run-pass=none -print-mir2vec -mir2vec-vocab-path=%S/Inputs/mir2vec_dummy_3D_vocab.json %s -o /dev/null 2>&1 | FileCheck %s
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svkeerthy wrote:

How do you set triple?

https://github.com/llvm/llvm-project/pull/162161