[clang] [llvm] [dwarf] make dwarf fission compatible with RISCV relaxations (PR #164128)

[David Blaikie via llvm-commits]

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+; RUN: llc -dwarf-version=5 -split-dwarf-file=foo.dwo -O0 %s -mtriple=riscv64-unknown-linux-gnu -filetype=obj -o %t
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dwblaikie wrote:

Yep, Split DWARF was originally implemented/prototyped as a DWARFv4 extension/prototype, before being standardized in DWARFv5.

https://github.com/llvm/llvm-project/pull/164128