[MLIR][Dialect] Add XeVM dialect (#144811)

XeVM is a new dialect that is designed to exposes Intel GPU hardware
features in a future proof way.
RFC is here:
https://discourse.llvm.org/t/mlir-rfc-dialect-xevm-proposal-for-new-xevm-dialect/86955
In short, XeVM is the nvvm or rocdl for Intel GPU.

The RFC includes background and challenges that XeVM is designed to
solve.
And also lists plan for upstreaming at the end.
This PR is the first of a series and it covers dialect definition and op
tests only.

Co-authored-by: Artem Kroviakov <artem.kroviakov@intel.com>

Author: silee2

mlir/include/mlir/Dialect/LLVMIR/CMakeLists.txt

@@ -87,3 +87,13 @@ mlir_tablegen(VCIXConversions.inc -gen-llvmir-conversions)
 mlir_tablegen(VCIXOpsAttributes.h.inc -gen-attrdef-decls -attrdefs-dialect=vcix)
 mlir_tablegen(VCIXOpsAttributes.cpp.inc -gen-attrdef-defs -attrdefs-dialect=vcix)
 add_public_tablegen_target(MLIRVCIXConversionsIncGen)
+
+add_mlir_dialect(XeVMOps xevm)
+add_mlir_doc(XeVMOps XeVMDialect Dialects/ -gen-dialect-doc -dialect=xevm)
+set(LLVM_TARGET_DEFINITIONS XeVMOps.td)
+mlir_tablegen(XeVMConversions.inc -gen-llvmir-conversions)
+mlir_tablegen(XeVMOpsEnums.h.inc -gen-enum-decls)
+mlir_tablegen(XeVMOpsEnums.cpp.inc -gen-enum-defs)
+mlir_tablegen(XeVMOpsAttributes.h.inc -gen-attrdef-decls -attrdefs-dialect=xevm)
+mlir_tablegen(XeVMOpsAttributes.cpp.inc -gen-attrdef-defs -attrdefs-dialect=xevm)
+add_public_tablegen_target(MLIRXeVMConversionsIncGen)

mlir/include/mlir/Dialect/LLVMIR/XeVMDialect.h

@@ -0,0 +1,28 @@
+//===-- XeVMDialect.h - MLIR XeVM target definitions ------------*- C++ -*-===//
+//
+// This file is licensed under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef MLIR_DIALECT_LLVMIR_XEVMDIALECT_H_
+#define MLIR_DIALECT_LLVMIR_XEVMDIALECT_H_
+
+#include "mlir/Bytecode/BytecodeOpInterface.h"
+#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
+#include "mlir/IR/Dialect.h"
+#include "mlir/IR/OpDefinition.h"
+#include "mlir/Target/LLVMIR/ModuleTranslation.h"
+
+#include "mlir/Dialect/LLVMIR/XeVMOpsEnums.h.inc"
+
+#define GET_ATTRDEF_CLASSES
+#include "mlir/Dialect/LLVMIR/XeVMOpsAttributes.h.inc"
+
+#define GET_OP_CLASSES
+#include "mlir/Dialect/LLVMIR/XeVMOps.h.inc"
+
+#include "mlir/Dialect/LLVMIR/XeVMOpsDialect.h.inc"
+
+#endif /* MLIR_DIALECT_LLVMIR_XEVMDIALECT_H_ */