llvm/test/CodeGen/MIR/Generic/prefetch-targets.mir

# RUN: llc -run-pass=none -o - %s | FileCheck %s

...
---
name:            test
prefetch-targets: [ 'bb_id 0, 0, 1', 'bb_id 1, 0, 2' ]
body:             |
  bb.0:
...

# CHECK: name: test
# CHECK: prefetch-targets: [ bb_id 0, 0, 1, bb_id 1, 0, 2 ]