[PATCH] D55670: [RFC] [COFF] [AArch64] Avoid crashing on .seh directives in assembly

[Martin Storsjö via Phabricator via llvm-commits]

mstorsjo created this revision.
mstorsjo added reviewers: rnk, mgrang, ssijaric, TomTan.
Herald added subscribers: kristof.beyls, javed.absar.

Not sure if this really does the right thing, but it kind of matches a similar if directive in the corresponding x86_64 code:

  if (info->PrologEnd)
    EmitAbsDifference(streamer, info->PrologEnd, info->Begin);
  else
    streamer.EmitIntValue(0, 1);

This at least avoids crashing on cases of a few `.seh_*` directives in (inline) assembly (which is present in a few places in mingw-w64).


Repository:
  rL LLVM

https://reviews.llvm.org/D55670

Files:
  lib/MC/MCWin64EH.cpp
  test/MC/AArch64/seh.s

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