[PATCH] D19889: [SystemZ] Implement backchain attribute.

[Marcin Kościelnicki via llvm-commits]

koriakin created this revision.
koriakin added a reviewer: uweigand.
koriakin added a subscriber: llvm-commits.
koriakin set the repository for this revision to rL LLVM.

This introduces a SystemZ-specific "backchain" attribute on function, which
enables writing the frame backchain link as specified by the ABI.  This will
be used to implement -mbackchain option in clang.

Repository:
  rL LLVM

http://reviews.llvm.org/D19889

Files:
  lib/Target/SystemZ/SystemZFrameLowering.cpp
  lib/Target/SystemZ/SystemZISelLowering.cpp
  test/CodeGen/SystemZ/backchain.ll

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