David Blaikie 343bbda140 Use a stable sort to handle overlapping/duplicate line sequences ...

This can occur due to linker ICF and stable sort will ensure the results
are stable.

No explicit/new test coverage, because nondeterminism is non-testable.

It should already be covered by the DWARFDebugLineTest that was failing
some internal testing on an ARM machine which might've been what changed
the sort order. But `llvm::sort` also deliberately randomizes the
contents (under EXPENSIVE_CHECKS) so I'd have expected failures to show
up in any EXPENSIVE_CHECKS Build...

2025-02-07 23:50:41 +00:00

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