more cleanup

src/gt4py/next/backend.py

@@ -16,7 +16,6 @@
 from gt4py.next import allocators as next_allocators
 from gt4py.next.ffront import (
     foast_to_gtir,
-    foast_to_itir,
     foast_to_past,
     func_to_foast,
     func_to_past,
@@ -135,17 +134,6 @@ def step_order(self, inp: INPUT_PAIR) -> list[str]:
 
 DEFAULT_TRANSFORMS: Transforms = Transforms()
 
-# FIXME[#1582](havogt): remove after refactoring to GTIR
-# note: this step is deliberately placed here, such that the cache is shared
-_foast_to_itir_step = foast_to_itir.adapted_foast_to_itir_factory(cached=True)
-LEGACY_TRANSFORMS: Transforms = Transforms(
-    past_to_itir=past_to_itir.past_to_gtir_factory(),
-    foast_to_itir=_foast_to_itir_step,
-    field_view_op_to_prog=foast_to_past.operator_to_program_factory(
-        foast_to_itir_step=_foast_to_itir_step
-    ),
-)
-
 
 # TODO(tehrengruber): Rename class and `executor` & `transforms` attribute. Maybe:
 #  `Backend` -> `Toolchain`

src/gt4py/next/ffront/past_to_itir.py

@@ -56,7 +56,7 @@ def past_to_gtir(inp: AOT_PRG) -> stages.CompilableProgram:
         ...     column_axis=None,
         ... )
 
-        >>> itir_copy = past_to_itir(
+        >>> itir_copy = past_to_gtir(
         ...     toolchain.CompilableProgram(copy_program.past_stage, compile_time_args)
         ... )
 
@@ -191,7 +191,6 @@ class ProgramLowering(
     """
 
     grid_type: common.GridType
-    to_gtir: bool = False  # FIXME[#1582](havogt): remove after refactoring to GTIR
 
     # TODO(tehrengruber): enable doctests again. For unknown / obscure reasons
     #  the above doctest fails when executed using `pytest --doctest-modules`.

src/gt4py/next/program_processors/runners/roundtrip.py

@@ -265,7 +265,7 @@ def decorated_fencil(
 
 gtir = next_backend.Backend(
     name="roundtrip_gtir",
-    executor=Roundtrip(transforms=itir_transforms.apply_fieldview_transforms),
+    executor=Roundtrip(transforms=itir_transforms.apply_fieldview_transforms),  # type: ignore[arg-type] # don't understand why mypy complains
     allocator=next_allocators.StandardCPUFieldBufferAllocator(),
     transforms=next_backend.Transforms(
         past_to_itir=past_to_itir.past_to_gtir_factory(),

tests/next_tests/unit_tests/ffront_tests/test_past_to_gtir.py

@@ -46,7 +46,6 @@ def test_copy_lowering(copy_program_def, gtir_identity_fundef):
         past_node,
         function_definitions=[gtir_identity_fundef],
         grid_type=gtx.GridType.CARTESIAN,
-        to_gtir=True,
     )
     set_at_pattern = P(
         itir.SetAt,
@@ -93,7 +92,6 @@ def test_copy_restrict_lowering(copy_restrict_program_def, gtir_identity_fundef)
         past_node,
         function_definitions=[gtir_identity_fundef],
         grid_type=gtx.GridType.CARTESIAN,
-        to_gtir=True,
     )
     set_at_pattern = P(
         itir.SetAt,
@@ -149,9 +147,7 @@ def tuple_program(
         make_tuple_op(inp, out=(out1[1:], out2[1:]))
 
     parsed = ProgramParser.apply_to_function(tuple_program)
-    ProgramLowering.apply(
-        parsed, function_definitions=[], grid_type=gtx.GridType.CARTESIAN, to_gtir=True
-    )
+    ProgramLowering.apply(parsed, function_definitions=[], grid_type=gtx.GridType.CARTESIAN)
 
 
 @pytest.mark.xfail(
@@ -166,9 +162,7 @@ def tuple_program(
         make_tuple_op(inp, out=(out1[1:], out2))
 
     parsed = ProgramParser.apply_to_function(tuple_program)
-    ProgramLowering.apply(
-        parsed, function_definitions=[], grid_type=gtx.GridType.CARTESIAN, to_gtir=True
-    )
+    ProgramLowering.apply(parsed, function_definitions=[], grid_type=gtx.GridType.CARTESIAN)
 
 
 @pytest.mark.xfail
@@ -194,7 +188,6 @@ def test_invalid_call_sig_program(invalid_call_sig_program_def):
             ProgramParser.apply_to_function(invalid_call_sig_program_def),
             function_definitions=[],
             grid_type=gtx.GridType.CARTESIAN,
-            to_gtir=True,
         )
 
     assert exc_info.match("Invalid call to 'identity'")

tests/next_tests/unit_tests/iterator_tests/transforms_tests/test_domain_inference.py

@@ -8,21 +8,24 @@
 
 # TODO(SF-N): test scan operator
 
-import pytest
+from typing import Iterable, Literal, Optional, Union
+
 import numpy as np
-from typing import Iterable, Optional, Literal, Union
+import pytest
 
 from gt4py import eve
-from gt4py.next.iterator.ir_utils import common_pattern_matcher as cpm, ir_makers as im
-from gt4py.next import constructors
+from gt4py.next import common, constructors, utils
+from gt4py.next.common import Dimension
 from gt4py.next.iterator import ir as itir
+from gt4py.next.iterator.ir_utils import (
+    common_pattern_matcher as cpm,
+    domain_utils,
+    ir_makers as im,
+)
 from gt4py.next.iterator.transforms import infer_domain
-from gt4py.next.iterator.ir_utils import domain_utils
-from gt4py.next.common import Dimension
-from gt4py.next import common
-from gt4py.next.type_system import type_specifications as ts
 from gt4py.next.iterator.transforms.constant_folding import ConstantFolding
-from gt4py.next import utils
+from gt4py.next.type_system import type_specifications as ts
+
 
 float_type = ts.ScalarType(kind=ts.ScalarKind.FLOAT64)
 IDim = common.Dimension(value="IDim", kind=common.DimensionKind.HORIZONTAL)

tests/next_tests/unit_tests/program_processor_tests/runners_tests/dace_tests/test_gtir_to_sdfg.py

@@ -36,6 +36,7 @@
 
 from . import pytestmark
 
+
 dace_backend = pytest.importorskip("gt4py.next.program_processors.runners.dace_fieldview")