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[SystemZ] Bugfix for backchain with packed-stack

Authored by jonpa on Feb 28 2020, 10:14 AM.



The incoming back chain slot was implicitly allocated whenever a GPR was saved in SystemZFrameLowering::getRegSpillOffset(), but in cases where no GPRs were saved/restored this did not take effect.

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jonpa created this revision.Feb 28 2020, 10:14 AM
Herald added a project: Restricted Project. · View Herald TranscriptFeb 28 2020, 10:14 AM
uweigand accepted this revision.Mar 2 2020, 5:43 AM

LGTM, thanks!

This revision is now accepted and ready to land.Mar 2 2020, 5:43 AM
This revision was automatically updated to reflect the committed changes.