Add a compiler module into core.

   - The compiler module only contains the compiler pipeline
     to compiler SpirvKernel objects.

Author: Diptorup Deb

numba_dpex/core/compiler.py

@@ -0,0 +1,28 @@
+# SPDX-FileCopyrightText: 2022 Intel Corporation
+#
+# SPDX-License-Identifier: Apache-2.0
+
+from numba.core.compiler import CompilerBase, DefaultPassBuilder
+
+from numba_dpex.parfor_diagnostics import ExtendedParforDiagnostics
+
+from .passbuilder import PassBuilder
+
+
+class Compiler(CompilerBase):
+    """The DPEX compiler pipeline."""
+
+    def define_pipelines(self):
+        # this maintains the objmode fallback behaviour
+        pms = []
+        self.state.parfor_diagnostics = ExtendedParforDiagnostics()
+        self.state.metadata[
+            "parfor_diagnostics"
+        ] = self.state.parfor_diagnostics
+        if not self.state.flags.force_pyobject:
+            pms.append(PassBuilder.define_nopython_pipeline(self.state))
+        if self.state.status.can_fallback or self.state.flags.force_pyobject:
+            pms.append(
+                DefaultPassBuilder.define_objectmode_pipeline(self.state)
+            )
+        return pms