[all-commits] [llvm/llvm-project] b7d3a2: [ARM] Mark i64 and f64 shuffles as Custom for MVE

[David Green via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b7d3a2b62f4d3cea9ec7baf1004ac2f68a0bca98
      https://github.com/llvm/llvm-project/commit/b7d3a2b62f4d3cea9ec7baf1004ac2f68a0bca98
  Author: David Green <david.green at arm.com>
  Date:   2022-02-06 (Sun, 06 Feb 2022)

  Changed paths:
    M llvm/lib/Target/ARM/ARMISelLowering.cpp
    M llvm/test/CodeGen/Thumb2/mve-shuffle.ll
    M llvm/test/CodeGen/Thumb2/mve-vmovnstore.ll
    M llvm/test/CodeGen/Thumb2/mve-vst2-post.ll
    M llvm/test/CodeGen/Thumb2/mve-vst2.ll
    M llvm/test/CodeGen/Thumb2/mve-vst3.ll
    M llvm/test/CodeGen/Thumb2/mve-vst4-post.ll
    M llvm/test/CodeGen/Thumb2/mve-vst4.ll

  Log Message:
  -----------
  [ARM] Mark i64 and f64 shuffles as Custom for MVE

This way they get lowered through the ARMISD::BUILD_VECTOR, which can
produce more efficient D register moves.

Also helps D115653 not get stuck in a loop.