[hipBLASLt] Make generated code-object linking deterministic

projects/hipblaslt/tensilelite/Tensile/Tests/unit/characterization/ToolchainAssembly/test_assembly_char.py

@@ -19,8 +19,10 @@
 class _StubLinker:
     def __init__(self):
         self.calls = []
+        self.input_types = []
 
     def __call__(self, objFiles, coFileRaw):
+        self.input_types.append(type(objFiles))
         self.calls.append((list(objFiles), coFileRaw))
         Path(coFileRaw).write_text("raw")  # create the raw file for the move path
 
@@ -73,3 +75,24 @@ def test_build_empty_kernels(tmp_path, snapshot):
     asmDir.mkdir(); destDir.mkdir()
     out = buildAssemblyCodeObjectFiles(_StubLinker(), _StubBundler(), [], destDir, asmDir)
     assert out == snapshot
+
+
+def test_explicit_code_object_link_inputs_are_sorted_and_stable(tmp_path):
+    asmDir, destDir = tmp_path / "asm", tmp_path / "dest"
+    asmDir.mkdir(); destDir.mkdir()
+    observed = []
+    observed_types = []
+
+    for bases in (("z", "a", "m"), ("m", "z", "a")):
+        linker = _StubLinker()
+        kernels = [_kernel(base, coFile="CustomCO") for base in bases]
+        buildAssemblyCodeObjectFiles(
+            linker, _StubBundler(), kernels, destDir, asmDir, compress=True
+        )
+        assert len(linker.calls) == 1
+        observed.append(linker.calls[0][0])
+        observed_types.append(linker.input_types[0])
+
+    expected = [str(asmDir / f"{base}.o") for base in ("a", "m", "z")]
+    assert observed == [expected, expected]
+    assert observed_types == [list, list]

projects/hipblaslt/tensilelite/Tensile/Toolchain/Assembly.py

@@ -97,7 +97,7 @@ def buildAssemblyCodeObjectFiles(
           coFileMap[asmDir / (coName + extCoRaw)].add(str(asmDir / (kernel["BaseName"] + extObj)))
 
       for coFileRaw, objFiles in coFileMap.items():
-        linker(objFiles, str(coFileRaw))
+        linker(sorted(objFiles), str(coFileRaw))
         coFile = destDir / coFileRaw.name.replace(extCoRaw, extCo)
         if compress:
           bundler.compress(str(coFileRaw), str(coFile), gfx)