[Mlir-commits] [mlir] [MLIR][Transforms] add eliminate-explicit-rounding pass (PR #93443)

[donald chen]

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@@ -0,0 +1,89 @@
+//===- EliminateExplicitRounding.cpp - Remove intermediate extf/truncf pairs
+//-===//
+//
+// 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 implements removing intermediate extf/truncf pairs inserted from
+// type conversion.
+//
+//===----------------------------------------------------------------------===//
+#include "mlir/Dialect/Arith/Transforms/Passes.h"
+
+#include "mlir/Dialect/Arith/IR/Arith.h"
+#include "mlir/IR/PatternMatch.h"
+#include "mlir/IR/TypeUtilities.h"
+#include "mlir/Transforms/GreedyPatternRewriteDriver.h"
+
+namespace mlir {
+namespace arith {
+#define GEN_PASS_DEF_ELIMINATEEXPLICITROUNDING
+#include "mlir/Dialect/Arith/Transforms/Passes.h.inc"
+} // namespace arith
+} // namespace mlir
+
+using namespace mlir;
+
+namespace {
+
+struct EliminateExplicitRoundingRewritePattern final
+    : OpRewritePattern<arith::ExtFOp> {
+  using OpRewritePattern::OpRewritePattern;
+  using FilterFunction = std::function<bool(Operation *)>;
+
+  EliminateExplicitRoundingRewritePattern(MLIRContext *context,
+                                          FilterFunction filterFunc = nullptr)
----------------
cxy-1993 wrote:

What are the use cases for filterFunc? Should these also be tested?




https://github.com/llvm/llvm-project/pull/93443