Revert "Use linearise(...) in operator"

This reverts commit 11edd5e.

Author: thomasfaingnaert

src/device/matmul_kernels/operator.jl

@@ -27,28 +27,32 @@ struct WMMAOp{M, N, K} end
 
 function load_a(::Type{WMMAOp{M, N, K}}, ::Type{Layout.AlignedColMajor{Float16}}, workspace, tile::Tile) where {M, N, K}
     conf = WMMA.Config{M, N, K, Float32}
-    linear_index = linearise(tile.index, size(workspace))
+    ind = Tuple(tile.index) .+ 1
+    @inbounds linear_index = LinearIndices(size(workspace))[ind...]
     ptr = pointer(workspace, linear_index)
     return WMMA.load_a(ptr, size(workspace, 1), WMMA.ColMajor, conf)
 end
 
 function load_b(::Type{WMMAOp{M, N, K}}, ::Type{Layout.AlignedColMajor{Float16}}, workspace, tile::Tile) where {M, N, K}
     conf = WMMA.Config{M, N, K, Float32}
-    linear_index = linearise(tile.index, size(workspace))
+    ind = Tuple(tile.index) .+ 1
+    @inbounds linear_index = LinearIndices(size(workspace))[ind...]
     ptr = pointer(workspace, linear_index)
     return WMMA.load_b(ptr, size(workspace, 1), WMMA.ColMajor, conf)
 end
 
 function load_c(::Type{WMMAOp{M, N, K}}, ::Type{Layout.AlignedColMajor{Float32}}, workspace, tile::Tile) where {M, N, K}
     conf = WMMA.Config{M, N, K, Float32}
-    linear_index = linearise(tile.index, size(workspace))
+    ind = Tuple(tile.index) .+ 1
+    @inbounds linear_index = LinearIndices(size(workspace))[ind...]
     ptr = pointer(workspace, linear_index)
     return WMMA.load_c(ptr, size(workspace, 1), WMMA.ColMajor, conf)
 end
 
 function store_d(::Type{WMMAOp{M, N, K}}, ::Type{Layout.AlignedColMajor{Float32}}, workspace, frag, tile::Tile) where {M, N, K}
     conf = WMMA.Config{M, N, K, Float32}
-    linear_index = linearise(tile.index, size(workspace))
+    ind = Tuple(tile.index) .+ 1
+    @inbounds linear_index = LinearIndices(size(workspace))[ind...]
     ptr = pointer(workspace, linear_index)
     WMMA.store_d(ptr, frag, size(workspace, 1), WMMA.ColMajor, conf)
 end