fix hint test on ascend final 3

Author: starrryz

third_party/ascend/tutorials/hint/test_comment_hint.py

@@ -26,16 +26,13 @@
 This verifies that:
 1. #@hint:dot_pad_only_k on tl.load lines generates AnnotationOp with dot_pad_only_k attr in TTIR
 2. #@hint:bind_sub_block on for loops generates bind_sub_block attr on scf.for in TTIR
-3. The kernel compiles and runs correctly end-to-end
 """
 
 import triton
 import triton.language as tl
-from triton.compiler.compiler import ASTSource
-from triton.backends.ascend.spec.triton.compiler.code_generator import ast_to_ttir
 from triton._C.libtriton import ir, ascend
 from triton._C.libtriton.ascend import ir as ascend_ir
-from triton.backends.ascend.compiler import NPUOptions, min_dot_size
+from triton.backends.ascend.compiler import AscendBackend, NPUOptions, min_dot_size
 from triton.backends.compiler import GPUTarget
 
 
@@ -89,22 +86,28 @@ def matmul_hint_kernel(
 
 
 # ---------------------------------------------------------------------------
-# Helper: compile kernel to TTIR string for IR inspection
+# Helper: compile kernel to TTIR string using the full backend pipeline
 # ---------------------------------------------------------------------------
 def get_ttir_str(kernel_fn, signature, constants):
+    # Use the ascend backend's compile flow which properly invokes
+    # the spec ASTSource.make_ir -> ascend ast_to_ttir with hint support
+    from triton.compiler.compiler import ASTSource
+
     src = ASTSource(kernel_fn, signature, constants)
     context = ir.context()
     ir.load_dialects(context)
     ascend_ir.load_dialects(context)
     ascend.load_dialects(context)
+
     options = NPUOptions()
     target = GPUTarget("npu", options.arch, 64)
-    codegen_fns = {"min_dot_size": min_dot_size(target)}
-    # Apply ascend patch for hint processing
-    from triton.backends.ascend import _apply_ascend_patch
-    _apply_ascend_patch()
-    ttir = ast_to_ttir(kernel_fn, src, context, options, codegen_fns, {})
-    return str(ttir)
+    backend = AscendBackend(target)
+    backend.load_dialects(context)
+    codegen_fns = backend.get_codegen_implementation()
+    module_map = backend.get_module_map()
+
+    module = src.make_ir(options, codegen_fns, module_map, context)
+    return str(module)
 
 
 # ---------------------------------------------------------------------------
@@ -166,4 +169,4 @@ def test_ir_hint_annotations():
 # ---------------------------------------------------------------------------
 if __name__ == "__main__":
     test_ir_hint_annotations()
-    print("All comment hint tests passed!")
+    print("All comment hint tests passed!")