TestOpaqueLoc.cpp
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//===- TestOpaqueLoc.cpp - Pass to test opaque locations ------------------===//
//
// Part of the MLIR 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 "mlir/Dialect/StandardOps/Ops.h"
#include "mlir/IR/Builders.h"
#include "mlir/Pass/Pass.h"
using namespace mlir;
namespace {
/// Pass that changes locations to opaque locations for each operation.
/// It also takes all operations that are not function operations or
/// terminators and clones them with opaque locations which store the initial
/// locations.
struct TestOpaqueLoc : public ModulePass<TestOpaqueLoc> {
/// A simple structure which is used for testing as an underlying location in
/// OpaqueLoc.
struct MyLocation {
MyLocation() : id(42) {}
MyLocation(int id) : id(id) {}
int getId() { return id; }
int id;
};
void runOnModule() override {
std::vector<std::unique_ptr<MyLocation>> myLocs;
int last_it = 0;
getModule().walk([&](Operation *op) {
myLocs.push_back(std::make_unique<MyLocation>(last_it++));
Location loc = op->getLoc();
/// Set opaque location without fallback location to test the
/// corresponding get method.
op->setLoc(
OpaqueLoc::get<MyLocation *>(myLocs.back().get(), &getContext()));
if (isa<FuncOp>(op) || op->isKnownTerminator())
return;
OpBuilder builder(op);
/// Add the same operation but with fallback location to test the
/// corresponding get method and serialization.
Operation *op_cloned_1 = builder.clone(*op);
op_cloned_1->setLoc(
OpaqueLoc::get<MyLocation *>(myLocs.back().get(), loc));
/// Add the same operation but with void* instead of MyLocation* to test
/// getUnderlyingLocationOrNull method.
Operation *op_cloned_2 = builder.clone(*op);
op_cloned_2->setLoc(OpaqueLoc::get<void *>(nullptr, loc));
});
ScopedDiagnosticHandler diagHandler(&getContext(), [](Diagnostic &diag) {
auto &os = llvm::outs();
if (diag.getLocation().isa<OpaqueLoc>()) {
MyLocation *loc = OpaqueLoc::getUnderlyingLocationOrNull<MyLocation *>(
diag.getLocation());
if (loc)
os << "MyLocation: " << loc->id;
else
os << "nullptr";
}
os << ": " << diag << '\n';
os.flush();
});
getModule().walk([&](Operation *op) { op->emitOpError(); });
}
};
} // end anonymous namespace
static PassRegistration<TestOpaqueLoc>
pass("test-opaque-loc", "Changes all leaf locations to opaque locations");