f7b09ad700
Add 1:N support for the `arith.select` lowering. Only cases where the entire true/false value is selected are supported.
112 lines
4.1 KiB
C++
112 lines
4.1 KiB
C++
//===- TestPatterns.cpp - LLVM dialect test patterns ----------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/ArithToLLVM/ArithToLLVM.h"
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#include "mlir/Conversion/ControlFlowToLLVM/ControlFlowToLLVM.h"
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#include "mlir/Conversion/FuncToLLVM/ConvertFuncToLLVM.h"
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#include "mlir/Conversion/LLVMCommon/TypeConverter.h"
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#include "mlir/Dialect/Func/IR/FuncOps.h"
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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#include "mlir/Dialect/LLVMIR/LLVMTypes.h"
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#include "mlir/Pass/Pass.h"
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#include "mlir/Transforms/DialectConversion.h"
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using namespace mlir;
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namespace {
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/// Replace this op (which is expected to have 1 result) with the operands.
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struct TestDirectReplacementOp : public ConversionPattern {
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TestDirectReplacementOp(MLIRContext *ctx, const TypeConverter &converter)
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: ConversionPattern(converter, "test.direct_replacement", 1, ctx) {}
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LogicalResult
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matchAndRewrite(Operation *op, ArrayRef<Value> operands,
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ConversionPatternRewriter &rewriter) const final {
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if (op->getNumResults() != 1)
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return failure();
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rewriter.replaceOpWithMultiple(op, {operands});
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return success();
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}
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};
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struct TestLLVMLegalizePatternsPass
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: public PassWrapper<TestLLVMLegalizePatternsPass, OperationPass<>> {
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MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestLLVMLegalizePatternsPass)
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TestLLVMLegalizePatternsPass() = default;
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TestLLVMLegalizePatternsPass(const TestLLVMLegalizePatternsPass &other)
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: PassWrapper(other) {}
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StringRef getArgument() const final { return "test-llvm-legalize-patterns"; }
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StringRef getDescription() const final {
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return "Run LLVM dialect legalization patterns";
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}
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void getDependentDialects(DialectRegistry ®istry) const override {
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registry.insert<LLVM::LLVMDialect>();
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}
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void runOnOperation() override {
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MLIRContext *ctx = &getContext();
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// Set up type converter.
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LLVMTypeConverter converter(ctx);
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converter.addConversion(
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[&](IntegerType type, SmallVectorImpl<Type> &result) {
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if (type.isInteger(17)) {
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// Convert i17 -> (i18, i18).
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result.append(2, Builder(ctx).getIntegerType(18));
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return success();
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}
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result.push_back(type);
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return success();
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});
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// Populate patterns.
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mlir::RewritePatternSet patterns(ctx);
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patterns.add<TestDirectReplacementOp>(ctx, converter);
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arith::populateArithToLLVMConversionPatterns(converter, patterns);
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populateFuncToLLVMConversionPatterns(converter, patterns);
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cf::populateControlFlowToLLVMConversionPatterns(converter, patterns);
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// Define the conversion target used for the test.
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ConversionTarget target(*ctx);
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target.addLegalOp(OperationName("test.legal_op", ctx));
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target.addLegalDialect<LLVM::LLVMDialect>();
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target.addDynamicallyLegalOp<func::FuncOp>(
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[&](func::FuncOp funcOp) { return funcOp->hasAttr("is_legal"); });
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// Handle a partial conversion.
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DenseSet<Operation *> unlegalizedOps;
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ConversionConfig config;
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config.unlegalizedOps = &unlegalizedOps;
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config.allowPatternRollback = allowPatternRollback;
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if (failed(applyPartialConversion(getOperation(), target,
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std::move(patterns), config)))
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getOperation()->emitError() << "applyPartialConversion failed";
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}
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Option<bool> allowPatternRollback{*this, "allow-pattern-rollback",
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llvm::cl::desc("Allow pattern rollback"),
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llvm::cl::init(true)};
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};
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} // namespace
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//===----------------------------------------------------------------------===//
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// PassRegistration
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//===----------------------------------------------------------------------===//
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namespace mlir {
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namespace test {
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void registerTestLLVMLegalizePatternsPass() {
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PassRegistration<TestLLVMLegalizePatternsPass>();
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}
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} // namespace test
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} // namespace mlir
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