[PATCH] D17996: Add support for preserve_most/preserve_all calling conventions to the AArch64 backend.

[Roman Levenstein via llvm-commits]

swiftix created this revision.
swiftix added reviewers: t.p.northover, ributzka.
swiftix added a subscriber: llvm-commits.
Herald added subscribers: rengolin, aemerson.

This change add a support for preserve_most/preserve_all calling conventions to the AArch64 backend, similar to how it was done for X86-64.

There is also a subsequent patch on top of this one to add a tail-calls support for these calling conventions.

http://reviews.llvm.org/D17996

Files:
  lib/Target/AArch64/AArch64CallingConvention.td
  lib/Target/AArch64/AArch64ISelLowering.cpp
  lib/Target/AArch64/AArch64RegisterInfo.cpp
  lib/Target/ARM/ARMISelLowering.cpp
  test/CodeGen/AArch64/preserve_allcc.ll
  test/CodeGen/AArch64/preserve_mostcc.ll

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