[clang] [llvm] [SystemZ] Add support for __builtin_setjmp and __builtin_longjmp (PR #116642)

[Ulrich Weigand via cfe-commits]

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@@ -0,0 +1,75 @@
+; Test -mbackchain setjmp  store jmp_buf
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uweigand wrote:

See above.

https://github.com/llvm/llvm-project/pull/116642