[Ascend](fix) preserve hidden launch argument slots (#1722)

Keep the two reserved pure-SIMT scratch pointers null until scratch allocation support is ready. Always append the DTData slot, using nullptr when device printing is disabled, so both launch paths match the kernel ABI.

Signed-off-by: Ritsuka314 <Ritsuka@huawei.com>

Author: Ritsuka314

third_party/ascend/backend/driver.py

@@ -1315,7 +1315,9 @@ def _make_kernel_launch(args_ptr, args_size, indent="    "):
     size_t grid_offset = reserve_slot(sizeof(int32_t), 4);
     reserve_slot(sizeof(int32_t), 4);
     reserve_slot(sizeof(int32_t), 4);
-    {'size_t dtdata_offset = reserve_slot(sizeof(void*), 8);' if enable_device_print else ''}
+    {'reserve_slot(sizeof(void*), 8);' if metadata.is_pure_simt else ''}
+    {'reserve_slot(sizeof(void*), 8);' if metadata.is_pure_simt else ''}
+    {'size_t dtdata_offset = reserve_slot(sizeof(void*), 8);' if enable_device_print else 'reserve_slot(sizeof(void*), 8);'}
     size_t total_size = args_offset;
 
     std::vector<char> launch_args(total_size, 0);
@@ -1353,7 +1355,9 @@ def _make_kernel_launch(args_ptr, args_size, indent="    "):
       {'void* workspace_addr __attribute__((aligned(8)));' if not metadata.is_pure_simt else ''}
       {' '.join(f'{ty_to_cpp(ty)} arg{i} __attribute__((aligned({4 if ty[0] != "*" and ty[-2:] != "64" else 8})));' for i, ty in signature.items() if ty != "constexpr")}
       {' '.join(f'{ty_to_cpp(ty)} grid{mark} __attribute__((aligned(4)));' for mark, ty in grid_info.items())}
-      {'void* DTData __attribute__((aligned(8)));' if enable_device_print else ''}
+      {'void* global_scratch __attribute__((aligned(8)));' if metadata.is_pure_simt else ''}
+      {'void* profile_scratch __attribute__((aligned(8)));' if metadata.is_pure_simt else ''}
+      {'void* DTData __attribute__((aligned(8)));'}
     }} args = {{
       {'static_cast<void*>(ffts_addr),' if target_support_ffts else ''}
       {('static_cast<void*>(syncBlockLock_ptr),' if has_sync_block_lock else 'nullptr,') if not metadata.is_pure_simt else ''}
@@ -1362,7 +1366,9 @@ def _make_kernel_launch(args_ptr, args_size, indent="    "):
         [f'static_cast<{ty_to_cpp(ty)}>(arg{i})' for i, ty in signature.items() if ty != "constexpr"]
       )}
       {', '.join(f'static_cast<{ty_to_cpp(ty)}>(grid{mark})' for mark, ty in grid_info.items())}
-      {', static_cast<void*>(DTData)' if enable_device_print else ''}
+      {', static_cast<void*>(nullptr)' if metadata.is_pure_simt else ''}
+      {', static_cast<void*>(nullptr)' if metadata.is_pure_simt else ''}
+      {', static_cast<void*>(DTData)' if enable_device_print else ', static_cast<void*>(nullptr)'}
     }};
 {_launch_lambda_post.replace('__KERNEL_LAUNCH_CALL__', cpp_kernel_launch_local)}