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

[Ulrich Weigand via cfe-commits]

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@@ -0,0 +1,89 @@
+;Test  longjmp load from jmp_buf.
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uweigand wrote:

We certainly do not need to verify e.g. printf codegen here, so even if we do need the test for some reason, it should be significantly simplified.

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