[PATCH] D150332: [SystemZ][z/OS] Save (and restore) R3 to avoid clobbering parameter when call stack frame extension is invoked

[Neumann Hon via Phabricator via llvm-commits]

Everybody0523 updated this revision to Diff 521540.
Everybody0523 added a comment.

Fix build failure with expensive checks.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D150332/new/

https://reviews.llvm.org/D150332

Files:
  llvm/lib/Target/SystemZ/SystemZFrameLowering.cpp
  llvm/test/CodeGen/SystemZ/zos-prologue-epilog.ll

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