1 //===- TestDataLayoutQuery.cpp - Test Data Layout Queries -----------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "TestDialect.h"
10 #include "mlir/Analysis/DataLayoutAnalysis.h"
11 #include "mlir/Dialect/DLTI/DLTI.h"
12 #include "mlir/IR/BuiltinAttributes.h"
13 #include "mlir/Pass/Pass.h"
14 
15 using namespace mlir;
16 
17 namespace {
18 
19 /// A pass that finds "test.data_layout_query" operations and attaches to them
20 /// attributes containing the results of data layout queries for operation
21 /// result types.
22 struct TestDataLayoutQuery
23     : public PassWrapper<TestDataLayoutQuery, FunctionPass> {
24   void runOnFunction() override {
25     FuncOp func = getFunction();
26     Builder builder(func.getContext());
27     const DataLayoutAnalysis &layouts = getAnalysis<DataLayoutAnalysis>();
28 
29     func.walk([&](test::DataLayoutQueryOp op) {
30       // Skip the ops with already processed in a deeper call.
31       if (op->getAttr("size"))
32         return;
33 
34       const DataLayout &layout = layouts.getAbove(op);
35       unsigned size = layout.getTypeSize(op.getType());
36       unsigned bitsize = layout.getTypeSizeInBits(op.getType());
37       unsigned alignment = layout.getTypeABIAlignment(op.getType());
38       unsigned preferred = layout.getTypePreferredAlignment(op.getType());
39       op->setAttrs(
40           {builder.getNamedAttr("size", builder.getIndexAttr(size)),
41            builder.getNamedAttr("bitsize", builder.getIndexAttr(bitsize)),
42            builder.getNamedAttr("alignment", builder.getIndexAttr(alignment)),
43            builder.getNamedAttr("preferred", builder.getIndexAttr(preferred))});
44     });
45   }
46 };
47 } // namespace
48 
49 namespace mlir {
50 namespace test {
51 void registerTestDataLayoutQuery() {
52   PassRegistration<TestDataLayoutQuery>("test-data-layout-query",
53                                         "Test data layout queries");
54 }
55 } // namespace test
56 } // namespace mlir
57