[Mlir-commits] [mlir] [mlir][XeGPU][Transform] Add vectorlinearize transform pass. (PR #158084)

[Md Abdullah Shahneous Bari]

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@@ -0,0 +1,98 @@
+//===-- XeGPUVectorLinearize.cpp - Linearizes n-D vectors to 1-D vectors --===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Dialect/SCF/IR/SCF.h"
+#include "mlir/Dialect/SCF/Transforms/Patterns.h"
+#include "mlir/Dialect/Vector/IR/VectorOps.h"
+#include "mlir/Dialect/Vector/Transforms/LoweringPatterns.h"
+#include "mlir/Dialect/Vector/Transforms/VectorRewritePatterns.h"
+#include "mlir/Dialect/XeGPU/IR/XeGPU.h"
+#include "mlir/Dialect/XeGPU/Transforms/Passes.h"
+#include "mlir/Pass/Pass.h"
+#include "mlir/Transforms/DialectConversion.h"
+#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
+
+#include <optional>
+
+namespace mlir {
+namespace xegpu {
+#define GEN_PASS_DEF_XEGPUVECTORLINEARIZE
+#include "mlir/Dialect/XeGPU/Transforms/Passes.h.inc"
+} // namespace xegpu
+} // namespace mlir
+
+#define DEBUG_TYPE "xegpu-vector-linearize"
+
+using namespace mlir;
+
+namespace {
+struct XeGPUVectorLinearizePass final
+    : public xegpu::impl::XeGPUVectorLinearizeBase<XeGPUVectorLinearizePass> {
+  void runOnOperation() override {
+    // vector.broadcast and vector.gather requires progressive lowering
+    {
+      RewritePatternSet patterns(&getContext());
+      vector::populateVectorBroadcastLoweringPatterns(patterns);
+      vector::populateVectorGatherLoweringPatterns(patterns);
+      vector::populateVectorGatherToConditionalLoadPatterns(patterns);
+      // vector.transpose lowering
+      // Shuffle16x16 will fallback to Shuffle1D for non 16x16 sizes.
+      vector::populateVectorTransposeLoweringPatterns(
+          patterns, vector::VectorTransposeLowering::Shuffle16x16);
+      if (failed(applyPatternsGreedily(getOperation(), std::move(patterns))))
+        return signalPassFailure();
+    }
+
+    // Unroll load store from <MxN> to M <1xN> load/stores and then linearize
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mshahneo wrote:

Good point. Made it to handle n-D load/stores.

https://github.com/llvm/llvm-project/pull/158084