[PATCH] D97982: [MC] Introduce NeverAlign fragment type

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Ignorant thinking out loud, just because i've been thinking about kinda-similar issue:

1. Where is this fragment going to be added? The alignment will differ per CPU.
2. Do fragments only have the start point, or can they specify a range of instructions? If they can, then `NeverAlign` seems contrived to me. Perhaps this should instead be generalized into something like "ensure that this group of instructions doesn't cross ?-byte alignment"?



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Comment at: llvm/include/llvm/MC/MCStreamer.h:838
+  /// If the end of the following fragment ever gets aligned to
+  /// \p ByteAlignment, emit a single nop to break this alignment.
+  virtual void emitNeverAlignCodeAtEnd(unsigned ByteAlignment);
----------------
emit *where*?


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