[PATCH] D70542: [AArch64][SVE] Add intrinsics for gather loads with 64-bit offsets

[Andrzej Warzynski via Phabricator via llvm-commits]

andwar created this revision.
andwar added reviewers: sdesmalen, huntergr, rovka, mgudim, dancgr.
Herald added subscribers: llvm-commits, psnobl, rkruppe, hiraditya, kristof.beyls, tschuett.
Herald added a reviewer: rengolin.
Herald added a reviewer: efriedma.
Herald added a project: LLVM.

This patch adds the following intrinsics for gather loads with 64-bit offsets:

- @llvm.aarch64.sve.ld1.gather (unscaled offset)
- @llvm.aarch64.sve.ld1.gather.index (scaled offset)

These intrinsics map 1-1 to the following AArch64 instructions respectively (examples for half-words):

- ld1h { z0.d }, p0/z, [x0, z0.d]
- ld1h { z0.d }, p0/z, [x0, z0.d, lsl #1]


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D70542

Files:
  llvm/include/llvm/IR/IntrinsicsAArch64.td
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64InstrFormats.td
  llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
  llvm/lib/Target/AArch64/SVEInstrFormats.td
  llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
  llvm/test/CodeGen/AArch64/sve-intrinsics-gather-loads-64bit-offset.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-gather-loads-scaled.ll

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