[PATCH] New SystemZ backend: LLVM code changes

[Richard Sandiford]

[removing phabricator until chandlerc.com is redeemed]

Eric Christopher <echristo-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org> writes:
>   Be nice to see tests for the eh frame and debug information (take a
> look at test/DebugInfo/AArch64). Otherwise everything outside of
> lib/Target looks good to me.

Thanks for the pointer.  How does this look?  In case anyone's
wondering, I didn't add an equivalent of DebugInfo/AArch64/cfi-frame.ll
because .cfi_* directives are already tested in the CodeGen/SystemZ/frame-*.ll
tests.

The tests exposed a bug too. :-)  I'll send a fixed backend patch
if the tests look OK.

Richard

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