[Mlir-commits] [mlir] [mlir][acc] Add loop tiling utilities for OpenACC (PR #171490)

[Razvan Lupusoru]

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@@ -0,0 +1,313 @@
+//===- OpenACCUtilsTiling.cpp - OpenACC Loop Tiling Utilities -------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains utility functions for tiling OpenACC loops.
+//
+//===----------------------------------------------------------------------===//
+
+#include "mlir/Dialect/OpenACC/OpenACCUtilsTiling.h"
+
+#include "mlir/Dialect/Arith/IR/Arith.h"
+#include "mlir/Dialect/OpenACC/OpenACC.h"
+#include "mlir/Dialect/Utils/StaticValueUtils.h"
+#include "mlir/Transforms/RegionUtils.h"
+
+// Resolve unknown tile sizes (represented as -1 for tile(*)) to the default.
+static mlir::Value resolveUnknownTileSize(mlir::Value tileSize,
+                                          int32_t defaultTileSize,
+                                          mlir::RewriterBase &rewriter,
+                                          mlir::Location loc) {
+  auto constVal = mlir::getConstantIntValue(tileSize);
+  if (constVal && *constVal < 0) {
+    return mlir::arith::ConstantOp::create(
+        rewriter, loc, rewriter.getI32Type(),
+        rewriter.getI32IntegerAttr(defaultTileSize));
+  }
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razvanlupusoru wrote:

Done

https://github.com/llvm/llvm-project/pull/171490