[libunwind] Remove unused ARM SEH placeholder code
authorMartin Storsjö <martin@martin.st>
Tue, 10 May 2022 10:02:59 +0000 (13:02 +0300)
committerMartin Storsjö <martin@martin.st>
Mon, 6 Jun 2022 20:24:22 +0000 (23:24 +0300)
commit64778c002a77046e15a7ce7a7206f5c15355fc26
tree00fb3c325fc98311e22936adde548150d3169018
parent7c0e93cb89e6aa74881411213abf83faae7c58ee
[libunwind] Remove unused ARM SEH placeholder code

There's no such corresponding code for ARM64 (which has been working
in production for years). The SEH version of the Unwind functions
(e.g. `_Unwind_GetLanguageSpecificData`) doesn't use these fields.

The `_Unwind_ForcedUnwind` function would need these bits though,
but that's not used in normal C++ exception unwinding.

Differential Revision: https://reviews.llvm.org/D126868
libunwind/src/UnwindCursor.hpp