Move numba/dppl to numba_dppy with all history

numba_dppy/.gitignore

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+*.bc
+*.ll
+*.spirv

numba_dppy/CHANGE_LOG

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+NUMBA Version 0.48.0 + DPPL Version 0.3.0 (June 29, 2020)
+--------------------------------------------------------
+
+This release includes:
+
+* Caching of dppl.kernels which will improve performance.
+* Addition of support for Intel Advisor which will help in profiling applications.

numba_dppy/codegen.py

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+from llvmlite import binding as ll
+from llvmlite.llvmpy import core as lc
+
+from numba.core.codegen import BaseCPUCodegen, CodeLibrary
+from numba.core import utils
+
+
+SPIR_TRIPLE = {32: ' spir-unknown-unknown',
+               64: 'spir64-unknown-unknown'}
+
+SPIR_DATA_LAYOUT = {
+    32 : ('e-p:32:32-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:'
+          '256-v512:512-v1024:1024'),
+    64 : ('e-i64:64-v16:16-v24:32-v32:32-v48:64-v96:128-v192:256-v256:256-'
+          'v512:512-v1024:1024')
+}
+
+
+class SPIRVCodeLibrary(CodeLibrary):
+    def _optimize_functions(self, ll_module):
+        pass
+
+    def _optimize_final_module(self):
+        # Run some lightweight optimization to simplify the module.
+        pmb = ll.PassManagerBuilder()
+        pmb.opt_level = 1
+        pmb.disable_unit_at_a_time = False
+        pmb.disable_unroll_loops = True
+        pmb.loop_vectorize = False
+        pmb.slp_vectorize = False
+
+        pm = ll.ModulePassManager()
+        pmb.populate(pm)
+        pm.run(self._final_module)
+
+    def _finalize_specific(self):
+        # Fix global naming
+        for gv in self._final_module.global_variables:
+            if '.' in gv.name:
+                gv.name = gv.name.replace('.', '_')
+
+    def get_asm_str(self):
+        # Return nothing: we can only dump assembler code when it is later
+        # generated (in numba.dppl.compiler).
+        return None
+
+
+class JITSPIRVCodegen(BaseCPUCodegen):
+    """
+    This codegen implementation generates optimized SPIR 2.0
+    """
+
+    _library_class = SPIRVCodeLibrary
+
+    def _init(self, llvm_module):
+        assert list(llvm_module.global_variables) == [], "Module isn't empty"
+        self._data_layout = SPIR_DATA_LAYOUT[utils.MACHINE_BITS]
+        self._target_data = ll.create_target_data(self._data_layout)
+
+    def _create_empty_module(self, name):
+        ir_module = lc.Module(name)
+        ir_module.triple = SPIR_TRIPLE[utils.MACHINE_BITS]
+        if self._data_layout:
+            ir_module.data_layout = self._data_layout
+        return ir_module
+
+    def _module_pass_manager(self):
+        raise NotImplementedError
+
+    def _function_pass_manager(self, llvm_module):
+        raise NotImplementedError
+
+    def _add_module(self, module):
+        pass