[PATCH] D131578: [AArch64][SME] Implement ABI for calls from streaming-compatible functions.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen created this revision.
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When a function is streaming-compatible and calls a function with a normal or streaming
interface, it may need to enable/disable stremaing mode before the call, and
needs to restore PSTATE.SM after the call.

This patch implements this with a Pseudo node that gets expanded to a
conditional branch and smstart/smstop node.

More details about the SME attributes and design can be found
in D131562 <https://reviews.llvm.org/D131562>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D131578

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64SMEInstrInfo.td
  llvm/test/CodeGen/AArch64/sme-streaming-compatible-interface.ll

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