feat(ascendc): add Huawei Ascend C toolchain support

Add toolchain, language, rules, and compiler modules for the
bisheng compiler driver from CANN (Compute Architecture for
Neural Networks) toolkit. Supports .asc (Ascend C kernel) and
.aicpu (AI-CPU operator) source kinds with binary/static/shared
target types.

- Toolchain: SDK auto-detection via ASCEND_HOME_PATH env or --sdk
- Compiler: bisheng module inherits from clang, adds add_sourceflags
  for explicit sourcekind overrides
- Rules: ascendc.env (default C++17), npuarchs (--npu-arch), build
- Language: check_main detection, add_ascnpuarchs API
- Tests: unit tests for check_main, project tests for libs/mixed

Fixes #7506

1 files changed, 46 insertions, 0 deletions

diff --git a/xmake/toolchains/ascendc/xmake.lua b/xmake/toolchains/ascendc/xmake.lua
new file mode 100644
index 000000000..6071a6840
--- /dev/null
+++ b/xmake/toolchains/ascendc/xmake.lua
@@ -0,0 +1,46 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+-- Copyright (C) 2015-present, Xmake Open Source Community.
+--
+-- @author      wuzhenqing
+-- @file        xmake.lua
+--
+
+-- Huawei Ascend C / bisheng toolchain
+--
+-- @code
+-- target("example")
+--     set_toolchains("ascendc")
+--     add_ascnpuarchs("dav-2201")
+-- @endcode
+--
+toolchain("ascendc")
+
+    -- set homepage
+    set_homepage("https://www.hiascend.com/")
+    set_description("Huawei Ascend C (bisheng compiler driver)")
+
+    -- set toolset
+    set_toolset("asc",  "bisheng")
+    set_toolset("aicpu", "bisheng")
+    set_toolset("ascld", "bisheng")
+    set_toolset("ascsh", "bisheng")
+    set_toolset("ar",   "llvm-ar", "ar")
+
+    -- check toolchain
+    on_check("check")
+
+    -- on load
+    on_load("load")