tree 7b5d853bbc2d167bbc0cbbcedd4a00cdb6f33622
parent 8c9742bd239af602ee2743baa3c4281f24d45df1
author Jonas Paulsson <paulsson@linux.vnet.ibm.com> 1619966285 +0200
committer Jonas Paulsson <paulsson@linux.vnet.ibm.com> 1620298249 +0200

[SystemZ] Support builtin_frame_address with packed stack without backchain.

In order to use __builtin_frame_address(0) with packed stack and no
backchain, the address of where the backchain would have been written is
returned (like GCC).

This address may either contain a saved register or be unused.

Review: Ulrich Weigand

Differential Revision: https://reviews.llvm.org/D101897