[all-commits] [llvm/llvm-project] 715a04: [RISCVGatherScatterLowering] Support shl in non-re...

[Philip Reames via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 715a04309069aaa87ee4952918fde339492e4295
      https://github.com/llvm/llvm-project/commit/715a04309069aaa87ee4952918fde339492e4295
  Author: Philip Reames <preames at rivosinc.com>
  Date:   2023-05-12 (Fri, 12 May 2023)

  Changed paths:
    M llvm/lib/Target/RISCV/RISCVGatherScatterLowering.cpp
    M llvm/test/CodeGen/RISCV/rvv/strided-load-store.ll

  Log Message:
  -----------
  [RISCVGatherScatterLowering] Support shl in non-recursive matching

We can apply the same logic as for multiply since a left shift is just a multiply by a power of two. Note that since shl is not commutative, we do need to be careful to match sure that the splat is the RHS of the instruction.

Differential Revision: https://reviews.llvm.org/D150471