[PATCH] D125644: [ARM SEH 2] [llvm-readobj] Improve printing of Windows ARM packed unwind info

Mon May 16 12:49:40 PDT 2022

mstorsjo added a comment.

In D125644#3516818 <https://reviews.llvm.org/D125644#3516818>, @efriedma wrote:

> I assume it's illegal to use prologue/epilogue folding with R==1?  Should we try to diagnose this?

No, that does seem to be quite legal - the table at https://docs.microsoft.com/en-us/cpp/build/arm-exception-handling?view=msvc-160#packed-unwind-data listing the combinations of C/L/R/PF does seem to have lots of valid combinations with R=1 PF=1.

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D125644/new/

https://reviews.llvm.org/D125644