[PATCH] D156980: [mlir][ArmSME] Extend arm_sme.zero for all types

[Cullen Rhodes via Phabricator via llvm-commits]

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The arm_sme.zero op currently only supports 8-bit element tiles. This
extends the op and lowering from 'arith.constant dense<0>' ->
'arm_sme.zero' to support all tile types.

The lowering from arm_sme.zero to intrinsics is not updated as part of
this patch and will be done separately.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D156980

Files:
  mlir/include/mlir/Dialect/ArmSME/IR/ArmSME.td
  mlir/lib/Conversion/VectorToArmSME/VectorToArmSME.cpp
  mlir/test/Dialect/ArmSME/roundtrip.mlir
  mlir/test/Dialect/ArmSME/vector-ops-to-sme.mlir

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