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//===- TestIRVisitorsGeneric.cpp - Pass to test the Generic IR visitors ---===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "TestDialect.h"
#include "mlir/Pass/Pass.h"
using namespace mlir;
static std::string getStageDescription(const WalkStage &stage) {
if (stage.isBeforeAllRegions())
return "before all regions";
if (stage.isAfterAllRegions())
return "after all regions";
return "before region #" + std::to_string(stage.getNextRegion());
}
namespace {
/// This pass exercises generic visitor with void callbacks and prints the order
/// and stage in which operations are visited.
struct TestGenericIRVisitorPass
: public PassWrapper<TestGenericIRVisitorPass, OperationPass<>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(TestGenericIRVisitorPass)
StringRef getArgument() const final { return "test-generic-ir-visitors"; }
StringRef getDescription() const final { return "Test generic IR visitors."; }
void runOnOperation() override {
Operation *outerOp = getOperation();
int stepNo = 0;
outerOp->walk([&](Operation *op, const WalkStage &stage) {
llvm::outs() << "step " << stepNo++ << " op '" << op->getName() << "' "
<< getStageDescription(stage) << "\n";
});
// Exercise static inference of operation type.
outerOp->walk([&](test::TwoRegionOp op, const WalkStage &stage) {
llvm::outs() << "step " << stepNo++ << " op '" << op->getName() << "' "
<< getStageDescription(stage) << "\n";
});
}
};
/// This pass exercises the generic visitor with non-void callbacks and prints
/// the order and stage in which operations are visited. It will interrupt the
/// walk based on attributes peesent in the IR.
struct TestGenericIRVisitorInterruptPass
: public PassWrapper<TestGenericIRVisitorInterruptPass, OperationPass<>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(
TestGenericIRVisitorInterruptPass)
StringRef getArgument() const final {
return "test-generic-ir-visitors-interrupt";
}
StringRef getDescription() const final {
return "Test generic IR visitors with interrupts.";
}
void runOnOperation() override {
Operation *outerOp = getOperation();
int stepNo = 0;
auto walker = [&](Operation *op, const WalkStage &stage) {
if (auto interruptBeforeAall =
op->getAttrOfType<BoolAttr>("interrupt_before_all"))
if (interruptBeforeAall.getValue() && stage.isBeforeAllRegions())
return WalkResult::interrupt();
if (auto interruptAfterAll =
op->getAttrOfType<BoolAttr>("interrupt_after_all"))
if (interruptAfterAll.getValue() && stage.isAfterAllRegions())
return WalkResult::interrupt();
if (auto interruptAfterRegion =
op->getAttrOfType<IntegerAttr>("interrupt_after_region"))
if (stage.isAfterRegion(
static_cast<int>(interruptAfterRegion.getInt())))
return WalkResult::interrupt();
if (auto skipBeforeAall = op->getAttrOfType<BoolAttr>("skip_before_all"))
if (skipBeforeAall.getValue() && stage.isBeforeAllRegions())
return WalkResult::skip();
if (auto skipAfterAll = op->getAttrOfType<BoolAttr>("skip_after_all"))
if (skipAfterAll.getValue() && stage.isAfterAllRegions())
return WalkResult::skip();
if (auto skipAfterRegion =
op->getAttrOfType<IntegerAttr>("skip_after_region"))
if (stage.isAfterRegion(static_cast<int>(skipAfterRegion.getInt())))
return WalkResult::skip();
llvm::outs() << "step " << stepNo++ << " op '" << op->getName() << "' "
<< getStageDescription(stage) << "\n";
return WalkResult::advance();
};
// Interrupt the walk based on attributes on the operation.
auto result = outerOp->walk(walker);
if (result.wasInterrupted())
llvm::outs() << "step " << stepNo++ << " walk was interrupted\n";
// Exercise static inference of operation type.
result = outerOp->walk([&](test::TwoRegionOp op, const WalkStage &stage) {
return walker(op, stage);
});
if (result.wasInterrupted())
llvm::outs() << "step " << stepNo++ << " walk was interrupted\n";
}
};
struct TestGenericIRBlockVisitorInterruptPass
: public PassWrapper<TestGenericIRBlockVisitorInterruptPass,
OperationPass<ModuleOp>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(
TestGenericIRBlockVisitorInterruptPass)
StringRef getArgument() const final {
return "test-generic-ir-block-visitors-interrupt";
}
StringRef getDescription() const final {
return "Test generic IR visitors with interrupts, starting with Blocks.";
}
void runOnOperation() override {
int stepNo = 0;
auto walker = [&](Block *block) {
for (Operation &op : *block)
if (op.getAttrOfType<BoolAttr>("interrupt"))
return WalkResult::interrupt();
llvm::outs() << "step " << stepNo++ << "\n";
return WalkResult::advance();
};
auto result = getOperation()->walk(walker);
if (result.wasInterrupted())
llvm::outs() << "step " << stepNo++ << " walk was interrupted\n";
}
};
struct TestGenericIRRegionVisitorInterruptPass
: public PassWrapper<TestGenericIRRegionVisitorInterruptPass,
OperationPass<ModuleOp>> {
MLIR_DEFINE_EXPLICIT_INTERNAL_INLINE_TYPE_ID(
TestGenericIRRegionVisitorInterruptPass)
StringRef getArgument() const final {
return "test-generic-ir-region-visitors-interrupt";
}
StringRef getDescription() const final {
return "Test generic IR visitors with interrupts, starting with Regions.";
}
void runOnOperation() override {
int stepNo = 0;
auto walker = [&](Region *region) {
for (Operation &op : region->getOps())
if (op.getAttrOfType<BoolAttr>("interrupt"))
return WalkResult::interrupt();
llvm::outs() << "step " << stepNo++ << "\n";
return WalkResult::advance();
};
auto result = getOperation()->walk(walker);
if (result.wasInterrupted())
llvm::outs() << "step " << stepNo++ << " walk was interrupted\n";
}
};
} // namespace
namespace mlir {
namespace test {
void registerTestGenericIRVisitorsPass() {
PassRegistration<TestGenericIRVisitorPass>();
PassRegistration<TestGenericIRVisitorInterruptPass>();
PassRegistration<TestGenericIRBlockVisitorInterruptPass>();
PassRegistration<TestGenericIRRegionVisitorInterruptPass>();
}
} // namespace test
} // namespace mlir
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