[PATCH] D75128: [AArch64][SVE] Add intrinsics for first-faulting gather loads

[Andrzej Warzynski via Phabricator via llvm-commits]

andwar created this revision.
andwar added a reviewer: sdesmalen.
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.

The following intrinsics are added:

- @llvm.aarch64.sve.ldff1.gather
- @llvm.aarch64.sve.ldff1.gather.index
- @llvm.aarch64.sve.ldff1.gather_sxtw
- @llvm.aarch64.sve.ldff1.gather.uxtw
- @llvm.aarch64.sve.ldff1.gather_sxtw.index
- @llvm.aarch64.sve.ldff1.gather.uxtw.index
- @llvm.aarch64.sve.ldff1.gather.scalar.offset

Although this patch is quite substantial, the vast majority of the
implementation is just a 'copy & paste' of the implementation of regular
gather loads, including tests. There's only a handful of new
definitions:

- AArch64ISD nodes defined in AArch64ISelLowering.h (e.g. GLDFF1)
- Seleciton DAG Types in AArch64SVEInstrInfo.td (e.g. AArch64ldff1_gather)
- intrinsics in IntrinsicsAArch64.td (e.g. aarch64_sve_ldff1_gather)


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D75128

Files:
  llvm/include/llvm/IR/IntrinsicsAArch64.td
  llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
  llvm/lib/Target/AArch64/AArch64ISelLowering.h
  llvm/lib/Target/AArch64/AArch64SVEInstrInfo.td
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-32bit-scaled-offsets.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-32bit-unscaled-offsets.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-64bit-scaled-offset.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-64bit-unscaled-offset.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-vector-base-imm-offset.ll
  llvm/test/CodeGen/AArch64/sve-intrinsics-ff-gather-loads-vector-base-scalar-offset.ll

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