[PATCH] D149916: [VP][SelectionDAG][RISCV] Add get_vector_length intrinsics and generic SelectionDAG support.

[Craig Topper via Phabricator via llvm-commits]

craig.topper created this revision.
craig.topper added reviewers: reames, ABataev, frasercrmck, rogfer01, simoll, hiraditya.
Herald added subscribers: jobnoorman, luke, VincentWu, vkmr, ecnelises, jdoerfert, evandro, luismarques, apazos, sameer.abuasal, s.egerton, Jim, benna, psnobl, jocewei, PkmX, the_o, brucehoult, MartinMosbeck, edward-jones, zzheng, jrtc27, shiva0217, kito-cheng, niosHD, sabuasal, simoncook, johnrusso, rbar, asb, arichardson.
Herald added a project: All.
craig.topper requested review of this revision.
Herald added subscribers: pcwang-thead, eopXD, MaskRay.
Herald added a project: LLVM.

The generic implementation is umin(TC, VF * vscale).

Lowering to vsetvli for RISC-V will come in a future patch.

This patch is a pre-requisite to be able to CodeGen vectorized code from
D99750 <https://reviews.llvm.org/D99750>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149916

Files:
  llvm/docs/LangRef.rst
  llvm/include/llvm/CodeGen/TargetLowering.h
  llvm/include/llvm/IR/Intrinsics.td
  llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  llvm/test/CodeGen/RISCV/rvv/get_vector_length.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D149916.519687.patch
Type: text/x-patch
Size: 6809 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230504/2c62b7a7/attachment.bin>