[InstrRef] Preserve debug instr num in aarch64-cond-br-tuning. #10315
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The aarch64-cond-br-tuning pass transforms a CBZX instruction into a conditional branch (B.cond). One of the by products of the transformation is that the source instruction of the CBZX, which is an ANDXri instruction, gets transformed into a ANDSXri instruction, however this transformation doesn't preserve it's debug instruction number.
This patch fixes that issue.
(cherry-picked from f5f6af8)
(cherry-picked from cc86d7c)