501 lines
18 KiB
C++
501 lines
18 KiB
C++
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//===- unittests/MIR/PassBuilderCallbacksTest.cpp - PB Callback Tests -----===//
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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 "llvm/MC/TargetRegistry.h"
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#include "llvm/Target/TargetMachine.h"
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#include "llvm/Testing/Support/Error.h"
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#include <functional>
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#include <gmock/gmock.h>
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#include <gtest/gtest.h>
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#include <llvm/ADT/Any.h>
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#include <llvm/AsmParser/Parser.h>
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#include <llvm/CodeGen/MIRParser/MIRParser.h>
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#include <llvm/CodeGen/MachineFunction.h>
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#include <llvm/CodeGen/MachineModuleInfo.h>
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#include <llvm/CodeGen/MachinePassManager.h>
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#include <llvm/IR/LLVMContext.h>
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#include <llvm/IR/PassInstrumentation.h>
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#include <llvm/IR/PassManager.h>
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#include <llvm/Passes/PassBuilder.h>
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#include <llvm/Support/Regex.h>
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#include <llvm/Support/SourceMgr.h>
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#include <llvm/Support/TargetSelect.h>
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using namespace llvm;
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namespace {
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using testing::_;
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using testing::AnyNumber;
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using testing::DoAll;
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using testing::Not;
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using testing::Return;
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using testing::WithArgs;
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StringRef MIRString = R"MIR(
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--- |
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define void @test() {
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ret void
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}
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...
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---
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name: test
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body: |
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bb.0 (%ir-block.0):
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RET64
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...
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)MIR";
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/// Helper for HasName matcher that returns getName both for IRUnit and
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/// for IRUnit pointer wrapper into llvm::Any (wrapped by PassInstrumentation).
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template <typename IRUnitT> std::string getName(const IRUnitT &IR) {
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return std::string(IR.getName());
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}
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template <> std::string getName(const StringRef &name) {
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return std::string(name);
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}
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template <> std::string getName(const Any &WrappedIR) {
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if (const auto *const *M = llvm::any_cast<const Module *>(&WrappedIR))
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return (*M)->getName().str();
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if (const auto *const *F = llvm::any_cast<const Function *>(&WrappedIR))
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return (*F)->getName().str();
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if (const auto *const *MF =
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llvm::any_cast<const MachineFunction *>(&WrappedIR))
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return (*MF)->getName().str();
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return "<UNKNOWN>";
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}
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/// Define a custom matcher for objects which support a 'getName' method.
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///
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/// LLVM often has IR objects or analysis objects which expose a name
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/// and in tests it is convenient to match these by name for readability.
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/// Usually, this name is either a StringRef or a plain std::string. This
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/// matcher supports any type exposing a getName() method of this form whose
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/// return value is compatible with an std::ostream. For StringRef, this uses
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/// the shift operator defined above.
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///
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/// It should be used as:
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///
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/// HasName("my_function")
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///
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/// No namespace or other qualification is required.
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MATCHER_P(HasName, Name, "") {
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*result_listener << "has name '" << getName(arg) << "'";
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return Name == getName(arg);
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}
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MATCHER_P(HasNameRegex, Name, "") {
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*result_listener << "has name '" << getName(arg) << "'";
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llvm::Regex r(Name);
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return r.match(getName(arg));
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}
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struct MockPassInstrumentationCallbacks {
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PassInstrumentationCallbacks Callbacks;
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MockPassInstrumentationCallbacks() {
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ON_CALL(*this, runBeforePass(_, _)).WillByDefault(Return(true));
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}
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MOCK_METHOD2(runBeforePass, bool(StringRef PassID, llvm::Any));
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MOCK_METHOD2(runBeforeSkippedPass, void(StringRef PassID, llvm::Any));
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MOCK_METHOD2(runBeforeNonSkippedPass, void(StringRef PassID, llvm::Any));
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MOCK_METHOD3(runAfterPass,
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void(StringRef PassID, llvm::Any, const PreservedAnalyses &PA));
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MOCK_METHOD2(runAfterPassInvalidated,
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void(StringRef PassID, const PreservedAnalyses &PA));
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MOCK_METHOD2(runBeforeAnalysis, void(StringRef PassID, llvm::Any));
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MOCK_METHOD2(runAfterAnalysis, void(StringRef PassID, llvm::Any));
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void registerPassInstrumentation() {
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Callbacks.registerShouldRunOptionalPassCallback(
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[this](StringRef P, llvm::Any IR) {
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return this->runBeforePass(P, IR);
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});
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Callbacks.registerBeforeSkippedPassCallback(
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[this](StringRef P, llvm::Any IR) {
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this->runBeforeSkippedPass(P, IR);
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});
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Callbacks.registerBeforeNonSkippedPassCallback(
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[this](StringRef P, llvm::Any IR) {
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this->runBeforeNonSkippedPass(P, IR);
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});
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Callbacks.registerAfterPassCallback(
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[this](StringRef P, llvm::Any IR, const PreservedAnalyses &PA) {
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this->runAfterPass(P, IR, PA);
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});
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Callbacks.registerAfterPassInvalidatedCallback(
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[this](StringRef P, const PreservedAnalyses &PA) {
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this->runAfterPassInvalidated(P, PA);
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});
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Callbacks.registerBeforeAnalysisCallback([this](StringRef P, llvm::Any IR) {
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return this->runBeforeAnalysis(P, IR);
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});
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Callbacks.registerAfterAnalysisCallback(
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[this](StringRef P, llvm::Any IR) { this->runAfterAnalysis(P, IR); });
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}
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void ignoreNonMockPassInstrumentation(StringRef IRName) {
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// Generic EXPECT_CALLs are needed to match instrumentation on unimportant
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// parts of a pipeline that we do not care about (e.g. various passes added
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// by default by PassBuilder - Verifier pass etc).
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// Make sure to avoid ignoring Mock passes/analysis, we definitely want
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// to check these explicitly.
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EXPECT_CALL(*this,
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runBeforePass(Not(HasNameRegex("Mock")), HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(
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*this, runBeforeSkippedPass(Not(HasNameRegex("Mock")), HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(*this, runBeforeNonSkippedPass(Not(HasNameRegex("Mock")),
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HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(*this,
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runAfterPass(Not(HasNameRegex("Mock")), HasName(IRName), _))
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.Times(AnyNumber());
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EXPECT_CALL(*this, runBeforeAnalysis(HasNameRegex("MachineModuleAnalysis"),
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HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(*this,
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runBeforeAnalysis(Not(HasNameRegex("Mock")), HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(*this, runAfterAnalysis(HasNameRegex("MachineModuleAnalysis"),
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HasName(IRName)))
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.Times(AnyNumber());
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EXPECT_CALL(*this,
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runAfterAnalysis(Not(HasNameRegex("Mock")), HasName(IRName)))
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.Times(AnyNumber());
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}
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};
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template <typename DerivedT> class MockAnalysisHandleBase {
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public:
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class Analysis : public AnalysisInfoMixin<Analysis> {
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friend AnalysisInfoMixin<Analysis>;
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friend MockAnalysisHandleBase;
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static AnalysisKey Key;
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DerivedT *Handle;
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Analysis(DerivedT &Handle) : Handle(&Handle) {
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static_assert(std::is_base_of<MockAnalysisHandleBase, DerivedT>::value,
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"Must pass the derived type to this template!");
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}
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public:
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class Result {
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friend MockAnalysisHandleBase;
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DerivedT *Handle;
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Result(DerivedT &Handle) : Handle(&Handle) {}
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public:
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// Forward invalidation events to the mock handle.
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bool invalidate(MachineFunction &IR, const PreservedAnalyses &PA,
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MachineFunctionAnalysisManager::Invalidator &Inv) {
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return Handle->invalidate(IR, PA, Inv);
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}
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};
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Result run(MachineFunction &IR, MachineFunctionAnalysisManager::Base &AM) {
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return Handle->run(IR, AM);
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}
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};
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Analysis getAnalysis() { return Analysis(static_cast<DerivedT &>(*this)); }
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typename Analysis::Result getResult() {
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return typename Analysis::Result(static_cast<DerivedT &>(*this));
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}
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static StringRef getName() { return llvm::getTypeName<DerivedT>(); }
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protected:
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// FIXME: MSVC seems unable to handle a lambda argument to Invoke from within
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// the template, so we use a boring static function.
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static bool
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invalidateCallback(MachineFunction &IR, const PreservedAnalyses &PA,
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MachineFunctionAnalysisManager::Invalidator &Inv) {
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auto PAC = PA.template getChecker<Analysis>();
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return !PAC.preserved() &&
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!PAC.template preservedSet<AllAnalysesOn<MachineFunction>>();
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}
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/// Derived classes should call this in their constructor to set up default
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/// mock actions. (We can't do this in our constructor because this has to
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/// run after the DerivedT is constructed.)
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void setDefaults() {
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ON_CALL(static_cast<DerivedT &>(*this), run(_, _))
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.WillByDefault(Return(this->getResult()));
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ON_CALL(static_cast<DerivedT &>(*this), invalidate(_, _, _))
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.WillByDefault(&invalidateCallback);
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}
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};
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template <typename DerivedT> class MockPassHandleBase {
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public:
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class Pass : public MachinePassInfoMixin<Pass> {
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friend MockPassHandleBase;
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DerivedT *Handle;
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Pass(DerivedT &Handle) : Handle(&Handle) {
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static_assert(std::is_base_of<MockPassHandleBase, DerivedT>::value,
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"Must pass the derived type to this template!");
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}
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public:
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static MachinePassKey Key;
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PreservedAnalyses run(MachineFunction &IR,
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MachineFunctionAnalysisManager::Base &AM) {
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return Handle->run(IR, AM);
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}
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};
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static StringRef getName() { return llvm::getTypeName<DerivedT>(); }
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Pass getPass() { return Pass(static_cast<DerivedT &>(*this)); }
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protected:
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/// Derived classes should call this in their constructor to set up default
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/// mock actions. (We can't do this in our constructor because this has to
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/// run after the DerivedT is constructed.)
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void setDefaults() {
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ON_CALL(static_cast<DerivedT &>(*this), run(_, _))
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.WillByDefault(Return(PreservedAnalyses::all()));
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}
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};
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struct MockAnalysisHandle : public MockAnalysisHandleBase<MockAnalysisHandle> {
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MOCK_METHOD2(run, Analysis::Result(MachineFunction &,
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MachineFunctionAnalysisManager::Base &));
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MOCK_METHOD3(invalidate, bool(MachineFunction &, const PreservedAnalyses &,
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MachineFunctionAnalysisManager::Invalidator &));
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MockAnalysisHandle() { setDefaults(); }
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};
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template <typename DerivedT>
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MachinePassKey MockPassHandleBase<DerivedT>::Pass::Key;
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template <typename DerivedT>
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AnalysisKey MockAnalysisHandleBase<DerivedT>::Analysis::Key;
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class MockPassHandle : public MockPassHandleBase<MockPassHandle> {
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public:
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MOCK_METHOD2(run, PreservedAnalyses(MachineFunction &,
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MachineFunctionAnalysisManager::Base &));
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MockPassHandle() { setDefaults(); }
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};
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class MachineFunctionCallbacksTest : public testing::Test {
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protected:
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static void SetUpTestCase() {
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InitializeAllTargetInfos();
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InitializeAllTargets();
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InitializeAllTargetMCs();
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}
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std::unique_ptr<LLVMTargetMachine> TM;
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LLVMContext Context;
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std::unique_ptr<Module> M;
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std::unique_ptr<MIRParser> MIR;
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MockPassInstrumentationCallbacks CallbacksHandle;
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PassBuilder PB;
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ModulePassManager PM;
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MachineFunctionPassManager MFPM;
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FunctionAnalysisManager FAM;
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ModuleAnalysisManager AM;
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MachineFunctionAnalysisManager MFAM;
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MockPassHandle PassHandle;
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MockAnalysisHandle AnalysisHandle;
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std::unique_ptr<Module> parseMIR(const TargetMachine &TM, StringRef MIRCode,
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MachineModuleInfo &MMI) {
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SMDiagnostic Diagnostic;
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std::unique_ptr<MemoryBuffer> MBuffer = MemoryBuffer::getMemBuffer(MIRCode);
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MIR = createMIRParser(std::move(MBuffer), Context);
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if (!MIR)
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return nullptr;
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std::unique_ptr<Module> Mod = MIR->parseIRModule();
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if (!Mod)
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return nullptr;
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Mod->setDataLayout(TM.createDataLayout());
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if (MIR->parseMachineFunctions(*Mod, MMI)) {
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M.reset();
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return nullptr;
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}
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return Mod;
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}
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static PreservedAnalyses
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getAnalysisResult(MachineFunction &U,
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MachineFunctionAnalysisManager::Base &AM) {
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auto &MFAM = static_cast<MachineFunctionAnalysisManager &>(AM);
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MFAM.getResult<MockAnalysisHandle::Analysis>(U);
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return PreservedAnalyses::all();
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}
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void SetUp() override {
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std::string Error;
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auto TripleName = "x86_64-pc-linux-gnu";
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auto *T = TargetRegistry::lookupTarget(TripleName, Error);
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if (!T)
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GTEST_SKIP();
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TM = std::unique_ptr<LLVMTargetMachine>(
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static_cast<LLVMTargetMachine *>(T->createTargetMachine(
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TripleName, "", "", TargetOptions(), std::nullopt)));
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if (!TM)
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GTEST_SKIP();
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MachineModuleInfo MMI(TM.get());
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M = parseMIR(*TM, MIRString, MMI);
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AM.registerPass([&] { return MachineModuleAnalysis(TM.get()); });
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}
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MachineFunctionCallbacksTest()
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: CallbacksHandle(), PB(nullptr, PipelineTuningOptions(), std::nullopt,
|
||
|
|
&CallbacksHandle.Callbacks),
|
||
|
|
PM(), FAM(), AM(), MFAM(FAM, AM) {
|
||
|
|
|
||
|
|
EXPECT_TRUE(&CallbacksHandle.Callbacks ==
|
||
|
|
PB.getPassInstrumentationCallbacks());
|
||
|
|
|
||
|
|
/// Register a callback for analysis registration.
|
||
|
|
///
|
||
|
|
/// The callback is a function taking a reference to an AnalyisManager
|
||
|
|
/// object. When called, the callee gets to register its own analyses with
|
||
|
|
/// this PassBuilder instance.
|
||
|
|
PB.registerAnalysisRegistrationCallback(
|
||
|
|
[this](MachineFunctionAnalysisManager &AM) {
|
||
|
|
// Register our mock analysis
|
||
|
|
AM.registerPass([this] { return AnalysisHandle.getAnalysis(); });
|
||
|
|
});
|
||
|
|
|
||
|
|
/// Register a callback for pipeline parsing.
|
||
|
|
///
|
||
|
|
/// During parsing of a textual pipeline, the PassBuilder will call these
|
||
|
|
/// callbacks for each encountered pass name that it does not know. This
|
||
|
|
/// includes both simple pass names as well as names of sub-pipelines. In
|
||
|
|
/// the latter case, the InnerPipeline is not empty.
|
||
|
|
PB.registerPipelineParsingCallback(
|
||
|
|
[this](StringRef Name, MachineFunctionPassManager &PM) {
|
||
|
|
if (parseAnalysisUtilityPasses<MockAnalysisHandle::Analysis>(
|
||
|
|
"test-analysis", Name, PM))
|
||
|
|
return true;
|
||
|
|
|
||
|
|
/// Parse the name of our pass mock handle
|
||
|
|
if (Name == "test-transform") {
|
||
|
|
MFPM.addPass(PassHandle.getPass());
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
/// Register builtin analyses and cross-register the analysis proxies
|
||
|
|
PB.registerModuleAnalyses(AM);
|
||
|
|
PB.registerFunctionAnalyses(FAM);
|
||
|
|
PB.registerMachineFunctionAnalyses(MFAM);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
TEST_F(MachineFunctionCallbacksTest, Passes) {
|
||
|
|
EXPECT_CALL(AnalysisHandle, run(HasName("test"), _));
|
||
|
|
EXPECT_CALL(PassHandle, run(HasName("test"), _)).WillOnce(&getAnalysisResult);
|
||
|
|
|
||
|
|
StringRef PipelineText = "test-transform";
|
||
|
|
ASSERT_THAT_ERROR(PB.parsePassPipeline(MFPM, PipelineText), Succeeded())
|
||
|
|
<< "Pipeline was: " << PipelineText;
|
||
|
|
ASSERT_THAT_ERROR(MFPM.run(*M, MFAM), Succeeded());
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_F(MachineFunctionCallbacksTest, InstrumentedPasses) {
|
||
|
|
CallbacksHandle.registerPassInstrumentation();
|
||
|
|
// Non-mock instrumentation not specifically mentioned below can be ignored.
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("<string>");
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("test");
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("");
|
||
|
|
|
||
|
|
// PassInstrumentation calls should happen in-sequence, in the same order
|
||
|
|
// as passes/analyses are scheduled.
|
||
|
|
::testing::Sequence PISequence;
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runBeforePass(HasNameRegex("MockPassHandle"), HasName("test")))
|
||
|
|
.InSequence(PISequence);
|
||
|
|
EXPECT_CALL(
|
||
|
|
CallbacksHandle,
|
||
|
|
runBeforeNonSkippedPass(HasNameRegex("MockPassHandle"), HasName("test")))
|
||
|
|
.InSequence(PISequence);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runAfterPass(HasNameRegex("MockPassHandle"), HasName("test"), _))
|
||
|
|
.InSequence(PISequence);
|
||
|
|
|
||
|
|
EXPECT_CALL(AnalysisHandle, run(HasName("test"), _));
|
||
|
|
EXPECT_CALL(PassHandle, run(HasName("test"), _)).WillOnce(&getAnalysisResult);
|
||
|
|
|
||
|
|
StringRef PipelineText = "test-transform";
|
||
|
|
ASSERT_THAT_ERROR(PB.parsePassPipeline(MFPM, PipelineText), Succeeded())
|
||
|
|
<< "Pipeline was: " << PipelineText;
|
||
|
|
ASSERT_THAT_ERROR(MFPM.run(*M, MFAM), Succeeded());
|
||
|
|
}
|
||
|
|
|
||
|
|
TEST_F(MachineFunctionCallbacksTest, InstrumentedSkippedPasses) {
|
||
|
|
CallbacksHandle.registerPassInstrumentation();
|
||
|
|
// Non-mock instrumentation run here can safely be ignored.
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("<string>");
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("test");
|
||
|
|
CallbacksHandle.ignoreNonMockPassInstrumentation("");
|
||
|
|
|
||
|
|
// Skip the pass by returning false.
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runBeforePass(HasNameRegex("MockPassHandle"), HasName("test")))
|
||
|
|
.WillOnce(Return(false));
|
||
|
|
|
||
|
|
EXPECT_CALL(
|
||
|
|
CallbacksHandle,
|
||
|
|
runBeforeSkippedPass(HasNameRegex("MockPassHandle"), HasName("test")))
|
||
|
|
.Times(1);
|
||
|
|
|
||
|
|
EXPECT_CALL(AnalysisHandle, run(HasName("test"), _)).Times(0);
|
||
|
|
EXPECT_CALL(PassHandle, run(HasName("test"), _)).Times(0);
|
||
|
|
|
||
|
|
// As the pass is skipped there is no afterPass, beforeAnalysis/afterAnalysis
|
||
|
|
// as well.
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runBeforeNonSkippedPass(HasNameRegex("MockPassHandle"), _))
|
||
|
|
.Times(0);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runAfterPass(HasNameRegex("MockPassHandle"), _, _))
|
||
|
|
.Times(0);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runAfterPassInvalidated(HasNameRegex("MockPassHandle"), _))
|
||
|
|
.Times(0);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runAfterPass(HasNameRegex("MockPassHandle"), _, _))
|
||
|
|
.Times(0);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runBeforeAnalysis(HasNameRegex("MockAnalysisHandle"), _))
|
||
|
|
.Times(0);
|
||
|
|
EXPECT_CALL(CallbacksHandle,
|
||
|
|
runAfterAnalysis(HasNameRegex("MockAnalysisHandle"), _))
|
||
|
|
.Times(0);
|
||
|
|
|
||
|
|
StringRef PipelineText = "test-transform";
|
||
|
|
ASSERT_THAT_ERROR(PB.parsePassPipeline(MFPM, PipelineText), Succeeded())
|
||
|
|
<< "Pipeline was: " << PipelineText;
|
||
|
|
ASSERT_THAT_ERROR(MFPM.run(*M, MFAM), Succeeded());
|
||
|
|
}
|
||
|
|
|
||
|
|
} // end anonymous namespace
|