[all-commits] [llvm/llvm-project] e9c897: [AArch64][SME] Fix v8.6a bf16 NEON instruction pre...

[Cullen Rhodes via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: e9c8973f1c6879a4545329afceb66cc98447574f
      https://github.com/llvm/llvm-project/commit/e9c8973f1c6879a4545329afceb66cc98447574f
  Author: Cullen Rhodes <cullen.rhodes at arm.com>
  Date:   2021-08-24 (Tue, 24 Aug 2021)

  Changed paths:
    M llvm/lib/Target/AArch64/AArch64InstrInfo.td
    A llvm/test/MC/AArch64/SME/streaming-mode-neon-bf16.s
    M llvm/test/MC/AArch64/SME/streaming-mode-neon-negative.s

  Log Message:
  -----------
  [AArch64][SME] Fix v8.6a bf16 NEON instruction predication

In streaming mode on SME targets only the scalar BFCVT armv8.6-a
instruction is legal, predicate the illegal instructions on NEON to
disable them in streaming mode (see D107902). BFCVT is predicated on
HasNEONorStreamingSVE.

The reference can be found here:
https://developer.arm.com/documentation/ddi0602/2021-06/SIMD-FP-Instructions

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D108279