[all-commits] [llvm/llvm-project] 993b20: [AArch64] Sink splat(s/zext(..)) to uses

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 993b203b6a0ce62e1d16a31bc21b45540cad227c
      https://github.com/llvm/llvm-project/commit/993b203b6a0ce62e1d16a31bc21b45540cad227c
  Author: David Green <david.green at arm.com>
  Date:   2022-09-13 (Tue, 13 Sep 2022)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64ISelLowering.cpp
    M llvm/test/CodeGen/AArch64/aarch64-matrix-umull-smull.ll

  Log Message:
  -----------
  [AArch64] Sink splat(s/zext(..)) to uses

If the Shuffle is a splat and the operand is a zext/sext, sinking the
operand and the s/zext can help create indexed s/umull. This is
especially useful to prevent i64 mul being scalarized.

Differential Revision: https://reviews.llvm.org/D133355