[XeGPU] Move targetinfo constants to their own header file

This breaks the dependency from Dialect to Utils, which would be cyclic.

mlir/include/mlir/Dialect/XeGPU/IR/XeGPUTargetInfo.h

@@ -0,0 +1,30 @@
+//===- XeGPUTargetInfo.h - Target constants ---------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, 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_XEGPU_IR_XEGPUTARGETINFO_H_
+#define MLIR_DIALECT_XEGPU_IR_XEGPUTARGETINFO_H_
+
+namespace mlir {
+namespace xegpu {
+/// HW dependent constants.
+/// TODO: These constants should be queried from the target information.
+namespace targetinfo {
+constexpr unsigned subgroupSize = 16; // How many lanes in a subgroup.
+/// If DPAS A or B operands have low precision element types they must be packed
+/// according to the following sizes.
+constexpr unsigned packedSizeInBitsForDefault =
+    16; // Minimum packing size per register for DPAS A.
+constexpr unsigned packedSizeInBitsForDpasB =
+    32; // Minimum packing size per register for DPAS B.
+constexpr unsigned packedSizeInBitsForGatherScatter =
+    32; // Minimum packing size per register for Gather and Scatter ops.
+} // namespace targetinfo
+} // namespace xegpu
+} // namespace mlir
+
+#endif // MLIR_DIALECT_XEGPU_IR_XEGPUTARGETINFO_H_

mlir/include/mlir/Dialect/XeGPU/Utils/XeGPUUtils.h

@@ -24,22 +24,6 @@ class LayoutAttr;
 class TensorDescType;
 } // namespace xegpu
 
-namespace xegpu {
-/// HW dependent constants.
-/// TODO: These constants should be queried from the target information.
-namespace targetinfo {
-constexpr unsigned subgroupSize = 16; // How many lanes in a subgroup.
-/// If DPAS A or B operands have low precision element types they must be packed
-/// according to the following sizes.
-constexpr unsigned packedSizeInBitsForDefault =
-    16; // Minimum packing size per register for DPAS A.
-constexpr unsigned packedSizeInBitsForDpasB =
-    32; // Minimum packing size per register for DPAS B.
-constexpr unsigned packedSizeInBitsForGatherScatter =
-    32; // Minimum packing size per register for Gather and Scatter ops.
-} // namespace targetinfo
-} // namespace xegpu
-
 namespace xegpu {
 
 /// Flatten a set of ValueRange into a single SmallVector<Value>

mlir/lib/Dialect/XeGPU/IR/XeGPUDialect.cpp

@@ -8,7 +8,7 @@
 
 #include "mlir/Dialect/Utils/IndexingUtils.h"
 #include "mlir/Dialect/XeGPU/IR/XeGPU.h"
-#include "mlir/Dialect/XeGPU/Utils/XeGPUUtils.h"
+#include "mlir/Dialect/XeGPU/IR/XeGPUTargetInfo.h"
 #include "mlir/IR/Builders.h"
 #include "mlir/IR/DialectImplementation.h"
 #include "llvm/ADT/TypeSwitch.h"

mlir/lib/Dialect/XeGPU/Transforms/XeGPUPropagateLayout.cpp

@@ -15,6 +15,7 @@
 #include "mlir/Dialect/MemRef/IR/MemRef.h"
 #include "mlir/Dialect/Vector/IR/VectorOps.h"
 #include "mlir/Dialect/XeGPU/IR/XeGPU.h"
+#include "mlir/Dialect/XeGPU/IR/XeGPUTargetInfo.h"
 #include "mlir/Dialect/XeGPU/Transforms/Passes.h"
 #include "mlir/Dialect/XeGPU/Utils/XeGPUUtils.h"
 #include "mlir/IR/Attributes.h"

mlir/lib/Dialect/XeGPU/Transforms/XeGPUSubgroupDistribute.cpp

@@ -11,6 +11,7 @@
 #include "mlir/Dialect/Vector/IR/VectorOps.h"
 #include "mlir/Dialect/Vector/Transforms/VectorDistribution.h"
 #include "mlir/Dialect/XeGPU/IR/XeGPU.h"
+#include "mlir/Dialect/XeGPU/IR/XeGPUTargetInfo.h"
 #include "mlir/Dialect/XeGPU/Transforms/Passes.h"
 #include "mlir/Dialect/XeGPU/Transforms/Transforms.h"
 #include "mlir/Dialect/XeGPU/Utils/XeGPUUtils.h"

utils/bazel/llvm-project-overlay/mlir/BUILD.bazel

@@ -3519,11 +3519,8 @@ gentbl_cc_library(
 
 cc_library(
     name = "XeGPUDialect",
-    srcs = [
-        "lib/Dialect/XeGPU/IR/XeGPUDialect.cpp",
-        "lib/Dialect/XeGPU/IR/XeGPUOps.cpp",
-    ],
-    hdrs = ["include/mlir/Dialect/XeGPU/IR/XeGPU.h"],
+    srcs = glob(["lib/Dialect/XeGPU/IR/*.cpp"]),
+    hdrs = glob(["include/mlir/Dialect/XeGPU/IR/*.h"]),
     includes = ["include"],
     deps = [
         ":ArithDialect",
@@ -4845,7 +4842,8 @@ cc_library(
     ]),
     hdrs = glob(["include/mlir/Support/*.h"]),
     includes = ["include"],
-    deps = ["//llvm:Support"],)
+    deps = ["//llvm:Support"],
+)
 
 cc_library(
     name = "Debug",