[PATCH] D84373: [AArch64][SVE] Teach copyPhysReg to copy ZPR2/3/4.

[Eli Friedman via Phabricator via llvm-commits]

efriedma created this revision.
efriedma added reviewers: sdesmalen, paulwalker-arm, cameron.mcinally.
Herald added subscribers: danielkiss, psnobl, hiraditya, kristof.beyls, tschuett.
Herald added a project: LLVM.

It's sort of tricky to hit this in practice, but not impossible. I have a synthetic C testcase if anyone is interested.

The implementation is identical to the equivalent NEON register copies.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D84373

Files:
  llvm/lib/Target/AArch64/AArch64InstrInfo.cpp
  llvm/test/CodeGen/AArch64/sve-copy-zprpair.mir

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