[all-commits] [llvm/llvm-project] 8491d0: [AArch64] Lower vector trunc using tbl.

[Florian Hahn via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 8491d01cc385d08b8b4f5dd097239ea0009ddc63
      https://github.com/llvm/llvm-project/commit/8491d01cc385d08b8b4f5dd097239ea0009ddc63
  Author: Florian Hahn <flo at fhahn.com>
  Date:   2022-09-16 (Fri, 16 Sep 2022)

  Changed paths:
    M llvm/lib/CodeGen/CodeGenPrepare.cpp
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/trunc-to-tbl.ll

  Log Message:
  -----------
  [AArch64] Lower vector trunc using tbl.

Similar to using tbl to lower vector ZExts, tbl4 can be used to lower
vector truncates.

The initial version support i32->i8 conversions.

Depends on D120571

Reviewed By: t.p.northover

Differential Revision: https://reviews.llvm.org/D133495