[DT][NFC] Add test files for materializing IREE ops with encodings. (iree-org#22322)

The revision moves tests that exercise IREE core ops to
`materialize_encoding_for_iree_ops.mlir`. It adds another test for GPU
case, which ensures that swizzling is handled in the lowering.

Furthermore, it adapts two copied tests to move inputs and outputs to
function signature. Therefore, there are changes in VMVX and x86_64
tests.

It is a step towards iree-org#20825

---------

Signed-off-by: hanhanW <[email protected]>
Signed-off-by: Philipp <[email protected]>

Author: hanhanW

compiler/src/iree/compiler/Codegen/Common/test/BUILD.bazel

@@ -75,6 +75,7 @@ iree_lit_test_suite(
             "lower_ukernel_to_calls.mlir",
             "lowering_config_interpreter.mlir",
             "materialize_encoding_aarch64.mlir",
+            "materialize_encoding_for_iree_ops.mlir",
             "materialize_encoding_gfx1100.mlir",
             "materialize_encoding_gfx908.mlir",
             "materialize_encoding_gfx90a.mlir",

compiler/src/iree/compiler/Codegen/Common/test/CMakeLists.txt

@@ -71,6 +71,7 @@ iree_lit_test_suite(
     "lower_ukernel_to_calls.mlir"
     "lowering_config_interpreter.mlir"
     "materialize_encoding_aarch64.mlir"
+    "materialize_encoding_for_iree_ops.mlir"
     "materialize_encoding_gfx1100.mlir"
     "materialize_encoding_gfx908.mlir"
     "materialize_encoding_gfx90a.mlir"