[PATCH] D87371: [MC] [Win64EH] Try to generate packed unwind info where possible

[Eli Friedman via Phabricator via llvm-commits]

efriedma added a comment.

> Unfortunately, in practice, this isn't ever matched by the code generated by LLVM

Are you planning this as a followup?



================
Comment at: llvm/lib/MC/MCWin64EH.cpp:933
 
+  if (PackedEpilogOffset == 0 && !info->HandlesExceptions &&
+      FuncLength <= 0x7ff && TryPacked) {
----------------
Is it always exactly zero?  Spec says in some cases "No instruction corresponding to mov x29,sp is present in the epilog"


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  https://reviews.llvm.org/D87371/new/

https://reviews.llvm.org/D87371