From d5f16803ea45ac15938369bc8a64105bc997f3bb Mon Sep 17 00:00:00 2001
From: Yevhenii Havrylko <yevhenii.havrylko@intel.com>
Date: Thu, 2 May 2024 13:13:56 -0400
Subject: [PATCH] Clean up unused code in parfors

---
 numba_dpex/core/parfors/compiler.py         | 88 ---------------------
 numba_dpex/core/parfors/kernel_builder.py   | 11 ---
 numba_dpex/core/parfors/parfor_lowerer.py   |  1 -
 numba_dpex/core/parfors/reduction_helper.py |  4 -
 4 files changed, 104 deletions(-)
 delete mode 100644 numba_dpex/core/parfors/compiler.py

diff --git a/numba_dpex/core/parfors/compiler.py b/numba_dpex/core/parfors/compiler.py
deleted file mode 100644
index 8864cc637c..0000000000
--- a/numba_dpex/core/parfors/compiler.py
+++ /dev/null
@@ -1,88 +0,0 @@
-# SPDX-FileCopyrightText: 2022 - 2024 Intel Corporation
-#
-# SPDX-License-Identifier: Apache-2.0
-
-from numba.core import compiler, ir
-from numba.core import types as numba_types
-from numba.core.compiler_lock import global_compiler_lock
-
-from numba_dpex.core import config
-from numba_dpex.core.exceptions import (
-    KernelHasReturnValueError,
-    UnreachableError,
-)
-from numba_dpex.core.pipelines.kernel_compiler import KernelCompiler
-
-
-@global_compiler_lock
-def compile_numba_ir_with_dpex(
-    pyfunc,
-    pyfunc_name,
-    args,
-    return_type,
-    target_context,
-    typing_context,
-    debug=False,
-    is_kernel=True,
-    extra_compile_flags=None,
-):
-    """
-    Compiles a function using class:`numba_dpex.core.pipelines.KernelCompiler`
-    and returns the compiled result.
-
-    Args:
-        args: The list of arguments passed to the kernel.
-        debug (bool): Optional flag to turn on debug mode compilation.
-        extra_compile_flags: Extra flags passed to the compiler.
-
-    Returns:
-        cres: Compiled result.
-
-    Raises:
-        KernelHasReturnValueError: If the compiled function returns a
-            non-void value.
-    """
-    # First compilation will trigger the initialization of the backend.
-    typingctx = typing_context
-    targetctx = target_context
-
-    flags = compiler.Flags()
-    # Do not compile the function to a binary, just lower to LLVM
-    flags.debuginfo = config.DEBUGINFO_DEFAULT
-    flags.no_compile = True
-    flags.no_cpython_wrapper = True
-    flags.no_cfunc_wrapper = True
-    flags.nrt = False
-
-    if debug:
-        flags.debuginfo = debug
-
-    # Run compilation pipeline
-    if isinstance(pyfunc, ir.FunctionIR):
-        cres = compiler.compile_ir(
-            typingctx=typingctx,
-            targetctx=targetctx,
-            func_ir=pyfunc,
-            args=args,
-            return_type=return_type,
-            flags=flags,
-            locals={},
-            pipeline_class=KernelCompiler,
-        )
-    else:
-        raise UnreachableError()
-
-    if (
-        is_kernel
-        and cres.signature.return_type is not None
-        and cres.signature.return_type != numba_types.void
-    ):
-        raise KernelHasReturnValueError(
-            kernel_name=pyfunc_name,
-            return_type=cres.signature.return_type,
-        )
-    # Linking depending libraries
-    library = cres.library
-    library.finalize()
-
-    return cres
diff --git a/numba_dpex/core/parfors/kernel_builder.py b/numba_dpex/core/parfors/kernel_builder.py
index 6f059c8452..23aa46c7f9 100644
--- a/numba_dpex/core/parfors/kernel_builder.py
+++ b/numba_dpex/core/parfors/kernel_builder.py
@@ -3,25 +3,18 @@
 # SPDX-License-Identifier: Apache-2.0
 
 import copy
-import sys
 import warnings
 
-import dpctl
-import dpctl.program as dpctl_prog
 from numba.core import ir, types
 from numba.core.errors import NumbaParallelSafetyWarning
 from numba.core.ir_utils import (
-    add_offset_to_labels,
     get_name_var_table,
     get_unused_var_name,
     legalize_names,
     mk_unique_var,
-    remove_dead,
     remove_dels,
-    rename_labels,
     replace_var_names,
 )
-from numba.core.target_extension import target_override
 from numba.core.typing import signature
 from numba.parfors import parfor
 
@@ -32,15 +25,11 @@
 )
 from numba_dpex.core.types.kernel_api.index_space_ids import ItemType
 from numba_dpex.core.utils.call_kernel_builder import SPIRVKernelModule
-from numba_dpex.kernel_api_impl.spirv import spirv_generator
 from numba_dpex.kernel_api_impl.spirv.dispatcher import (
     SPIRVKernelDispatcher,
     _SPIRVKernelCompileResult,
 )
 
-from ..descriptor import dpex_kernel_target
-from ..types import DpnpNdArray
-from .compiler import compile_numba_ir_with_dpex
 from .kernel_templates.range_kernel_template import RangeKernelTemplate
 
 
diff --git a/numba_dpex/core/parfors/parfor_lowerer.py b/numba_dpex/core/parfors/parfor_lowerer.py
index 3eb39b2cf5..4610cf9ef4 100644
--- a/numba_dpex/core/parfors/parfor_lowerer.py
+++ b/numba_dpex/core/parfors/parfor_lowerer.py
@@ -3,7 +3,6 @@
 # SPDX-License-Identifier: Apache-2.0
 
 import copy
-from collections import namedtuple
 
 from llvmlite import ir as llvmir
 from numba.core import cgutils, ir, types
diff --git a/numba_dpex/core/parfors/reduction_helper.py b/numba_dpex/core/parfors/reduction_helper.py
index cb9e189977..eeeff3e486 100644
--- a/numba_dpex/core/parfors/reduction_helper.py
+++ b/numba_dpex/core/parfors/reduction_helper.py
@@ -17,10 +17,6 @@
 from numba.parfors import parfor
 from numba.parfors.parfor_lowering_utils import ParforLoweringBuilder
 
-from numba_dpex.core.datamodel.models import (
-    dpex_data_model_manager as kernel_dmm,
-)
-from numba_dpex.core.utils.call_kernel_builder import KernelLaunchIRBuilder
 from numba_dpex.core.utils.cgutils_extra import get_llvm_type
 from numba_dpex.dpctl_iface import libsyclinterface_bindings as sycl