[PATCH] D84869: [AArch64][SVE] Disable tail calls if callee does not preserve SVE regs.

[Sander de Smalen via Phabricator via llvm-commits]

sdesmalen updated this revision to Diff 281828.
sdesmalen added a comment.

Updated `CallerCC` to `AArch64_SVE_VectorCall` if the caller has an SVE signature.
The code that follows further on will automatically determine whether TCO can be usedby looking at the callee-saved regs preserved by the callee and caller (condition `if (!CCMatch) {` on line 4243)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D84869/new/

https://reviews.llvm.org/D84869

Files:
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64RegisterInfo.cpp
  llvm/lib/Target/AArch64/AArch64RegisterInfo.h
  llvm/test/CodeGen/AArch64/sve-tailcall.ll

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