[llvm] [DebugInfo][InstrRef] Copy instr-ref to replacement instrs in X86FixupSetCCPass (PR #159777)

[Orlando Cazalet-Hyams via llvm-commits]

OCHyams wrote:

How does this look?

> (the locations go missing again later in regalloc in that example).

With this revision that is no longer true and the variable locations in the linked ticket make it out to DWARF


https://github.com/llvm/llvm-project/pull/159777