| 1 | //===- TestAffineWalk.cpp - Pass to test affine walks |
|---|---|
| 2 | //----------------------===// |
| 3 | // |
| 4 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| 5 | // See https://llvm.org/LICENSE.txt for license information. |
| 6 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | |
| 10 | #include "mlir/Pass/Pass.h" |
| 11 | |
| 12 | #include "mlir/IR/BuiltinOps.h" |
| 13 | |
| 14 | using namespace mlir; |
| 15 | |
| 16 | namespace { |
| 17 | /// A test pass for verifying walk interrupts. |
| 18 | struct TestAffineWalk |
| 19 | : public PassWrapper<TestAffineWalk, OperationPass<ModuleOp>> { |
| 20 | MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestAffineWalk) |
| 21 | |
| 22 | void runOnOperation() override; |
| 23 | StringRef getArgument() const final { return "test-affine-walk"; } |
| 24 | StringRef getDescription() const final { return "Test affine walk method."; } |
| 25 | }; |
| 26 | } // namespace |
| 27 | |
| 28 | /// Emits a remark for the first `map`'s result expression that contains a |
| 29 | /// mod expression. |
| 30 | static void checkMod(AffineMap map, Location loc) { |
| 31 | for (AffineExpr e : map.getResults()) { |
| 32 | e.walk(callback: [&](AffineExpr s) { |
| 33 | if (s.getKind() == mlir::AffineExprKind::Mod) { |
| 34 | emitRemark(loc, message: "mod expression: "); |
| 35 | return WalkResult::interrupt(); |
| 36 | } |
| 37 | return WalkResult::advance(); |
| 38 | }); |
| 39 | } |
| 40 | } |
| 41 | |
| 42 | void TestAffineWalk::runOnOperation() { |
| 43 | auto m = getOperation(); |
| 44 | // Test whether the walk is being correctly interrupted. |
| 45 | m.walk([](Operation *op) { |
| 46 | for (NamedAttribute attr : op->getAttrs()) { |
| 47 | auto mapAttr = dyn_cast<AffineMapAttr>(attr.getValue()); |
| 48 | if (!mapAttr) |
| 49 | return; |
| 50 | checkMod(mapAttr.getAffineMap(), op->getLoc()); |
| 51 | } |
| 52 | }); |
| 53 | } |
| 54 | |
| 55 | namespace mlir { |
| 56 | void registerTestAffineWalk() { PassRegistration<TestAffineWalk>(); } |
| 57 | } // namespace mlir |
| 58 |