fix error in tload template for cube kernel

lib/TileOps/tload_template.py

@@ -353,15 +353,17 @@ def _constraint_tload_mat_nd2nz(src, dst) -> bool:
     # COL_MAJOR + ROW_MAJOR corresponds to NZ format
     if b_layout_value not in {"col_major", "COL_MAJOR"} or s_layout_value not in {"row_major", "ROW_MAJOR"}:
         return False
-    # ND2NZ: source is in ND (row-major) format where the inner dimension (g4)
-    # corresponds to the tile column count. Disambiguates from DN format where
-    # g4 corresponds to the tile row count.
-    if hasattr(src, 'rank') and src.rank == 5:
-        dst_valid_cols = dst.valid_shape[1] if hasattr(dst, 'valid_shape') and dst.valid_shape is not None else None
-        if dst_valid_cols is not None and hasattr(src, 'shape') and src.shape is not None:
-            src_inner = src.shape[4] if len(src.shape) >= 5 else None
-            if src_inner is not None:
-                if not _known_eq(dst_valid_cols, src_inner):
+    # Disambiguate ND vs DN via the source view layout attribute
+    # (e.g. layout = #pto.layout<nd>).  When the layout is not annotated the
+    # constraint conservatively returns True to avoid false rejections.
+    # src.config is always a ViewConfig for view operands — never None.
+    if hasattr(src, 'config') and src.config is not None:
+        view_config = src.config
+        if hasattr(view_config, 'layout'):
+            layout = view_config.layout
+            if layout is not None:
+                layout_val = layout.value
+                if layout_val.upper() not in {'ND', 'NZ'}:
                     return False
     return True
 
@@ -381,15 +383,17 @@ def _constraint_tload_mat_dn2nz(src, dst) -> bool:
     s_layout_value = s_layout.value if hasattr(s_layout, "value") else s_layout
     if b_layout_value not in {"col_major", "COL_MAJOR"} or s_layout_value not in {"row_major", "ROW_MAJOR"}:
         return False
-    # DN2NZ: source is in DN (col-major) format where the inner dimension (g4)
-    # corresponds to the tile row count. Disambiguates from ND format where
-    # g4 corresponds to the tile column count.
-    if hasattr(src, 'rank') and src.rank == 5:
-        dst_valid_rows = dst.valid_shape[0] if hasattr(dst, 'valid_shape') and dst.valid_shape is not None else None
-        if dst_valid_rows is not None and hasattr(src, 'shape') and src.shape is not None:
-            src_inner = src.shape[4] if len(src.shape) >= 5 else None
-            if src_inner is not None:
-                if not _known_eq(dst_valid_rows, src_inner):
+    # Disambiguate DN vs ND via the source view layout attribute
+    # (e.g. layout = #pto.layout<dn>).  When the layout is not annotated the
+    # constraint conservatively returns True to avoid false rejections.
+    # src.config is always a ViewConfig for view operands — never None.
+    if hasattr(src, 'config') and src.config is not None:
+        view_config = src.config
+        if hasattr(view_config, 'layout'):
+            layout = view_config.layout
+            if layout is not None:
+                layout_val = layout.value
+                if layout_val.upper() not in {'DN', 'NZ'}:
                     return False
     return True
 
@@ -501,3 +505,84 @@ def template_tload_gm_to_mat_dn2nz(src: pto.PartitionTensorView, dst: pto.Tile):
         ctrl=(0, False)
     )
     return
+
+
+def _constraint_tload_mat_dn2zn(src, dst) -> bool:
+    """TLOAD.MAT DN2ZN fractal load constraint (transposed DN→ZN)
+
+    DN2ZN loads col-major (DN) data from GM into L1 MAT in ZN format
+    (blayout=row_major, slayout=col_major).  Internally reuses the nd2nz
+    hardware path with transposed parameters — see TLoadCubeDN2ZN.
+    """
+    if not _constraint_tload_mat_base(src, dst):
+        return False
+    config = dst.config
+    if config is None:
+        return False
+    b_layout = config.b_layout
+    s_layout = config.s_layout
+    if b_layout is None or s_layout is None:
+        return False
+    b_layout_value = b_layout.value if hasattr(b_layout, "value") else b_layout
+    s_layout_value = s_layout.value if hasattr(s_layout, "value") else s_layout
+    # ZN format: blayout=row_major, slayout=col_major
+    if b_layout_value not in {"row_major", "ROW_MAJOR"} or s_layout_value not in {"col_major", "COL_MAJOR"}:
+        return False
+    # Use the view layout to disambiguate: DN2ZN only matches DN or NZ sources.
+    # src.config is always a ViewConfig for view operands — never None.
+    if hasattr(src, 'config') and src.config is not None:
+        view_config = src.config
+        if hasattr(view_config, 'layout'):
+            layout = view_config.layout
+            if layout is not None:
+                layout_val = layout.value
+                if layout_val.upper() not in {'DN', 'NZ'}:
+                    return False
+    return True
+
+
+@pto.ckernel(
+    target="a5",
+    op="pto.tload",
+    priority=1,
+    dtypes=[
+        (pto.f16, pto.f16),
+        (pto.bf16, pto.bf16),
+        (pto.f32, pto.f32),
+    ],
+    constraints=[_constraint_tload_mat_dn2zn],
+    name="tload_gm_to_mat_dn2zn",
+)
+def template_tload_gm_to_mat_dn2zn(src: pto.PartitionTensorView, dst: pto.Tile):
+    """GM -> MAT DN2ZN fractal load template (transposed DN → ZN)
+
+    Load Col-Major (DN) format data from GM into L1 MAT Buffer in ZN format
+    (transposed NZ: blayout=row_major, slayout=col_major).
+
+    Reuses the ND2NZ hardware mode with transposed parameter mapping, matching
+    the C++ ISA TLoadCubeDN2ZN (TLoad.hpp:472) which calls
+    TLoadCubeInstr<Layout::ND> with nValue=gShape4, dValue=validRow.
+    """
+    m, k = dst.valid_shape
+    g0, g1, g2, g3, g4 = src.shape
+    s0, s1, s2, s3, s4 = src.strides
+
+    gm_ptr = src.as_ptr()
+    mat_ptr = dst.as_ptr()
+    elem_bytes = pto.bytewidth(dst.element_type)
+
+    # TLoadCubeDN2ZN: nValue = gShape4, dValue = validRow
+    n_value = g4
+    d_value = m
+
+    # TLoadCubeDN2ZN: loop1SrcStride = GetByteSize(gStride4)
+    src_inner_stride = s4 * elem_bytes
+
+    pto.mte_gm_l1_frac(
+        gm_ptr, mat_ptr, pto.FractalMode.ND2NZ,
+        shape=(n_value, d_value),
+        src_layout=(src_inner_stride,),
+        dst_group=(1, 1, k, 0),
+        ctrl=(0, False)
+    )
+    return