[PATCH] D42898: Do not spill CSR to stack on entry to noreturn functions

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myeisha added a comment.

If I understand the IR correctly then this would either involve some nasty inline assembly or some form of tail call. If the target were not itself nonreturning, then the caller could also not be, so the transform would not apply.

I guess this is just way over my head.


https://reviews.llvm.org/D42898