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99ebb6e7dc
that require deferred invalidation. This handles the other real-world invalidation scenario that we have cases of: a function analysis which caches references to a module analysis. We currently do this in the AA aggregation layer and might well do this in other places as well. Since this is relative rare, the technique is somewhat more cumbersome. Analyses need to register themselves when accessing the outer analysis manager's proxy. This proxy is already necessarily present to allow access to the outer IR unit's analyses. By registering here we can track and trigger invalidation when that outer analysis goes away. To make this work we need to enhance the PreservedAnalyses infrastructure to support a (slightly) more explicit model for "sets" of analyses, and allow abandoning a single specific analyses even when a set covering that analysis is preserved. That allows us to describe the scenario of preserving all Function analyses *except* for the one where deferred invalidation has triggered. We also need to teach the invalidator API to support direct ID calls instead of always going through a template to dispatch so that we can just record the ID mapping. I've introduced testing of all of this both for simple module<->function cases as well as for more complex cases involving a CGSCC layer. Much like the previous patch I've not tried to fully update the loop pass management layer because that layer is due to be heavily reworked to use similar techniques to the CGSCC to handle updates. As that happens, we'll have a better testing basis for adding support like this. Many thanks to both Justin and Sean for the extensive reviews on this to help bring the API design and documentation into a better state. Differential Revision: https://reviews.llvm.org/D27198 llvm-svn: 290594
769 lines
28 KiB
C++
769 lines
28 KiB
C++
//===- llvm/unittest/IR/PassManager.cpp - PassManager tests ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/PassManager.h"
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#include "llvm/Support/SourceMgr.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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class TestFunctionAnalysis : public AnalysisInfoMixin<TestFunctionAnalysis> {
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public:
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struct Result {
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Result(int Count) : InstructionCount(Count) {}
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int InstructionCount;
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};
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TestFunctionAnalysis(int &Runs) : Runs(Runs) {}
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/// \brief Run the analysis pass over the function and return a result.
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Result run(Function &F, FunctionAnalysisManager &AM) {
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++Runs;
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int Count = 0;
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for (Function::iterator BBI = F.begin(), BBE = F.end(); BBI != BBE; ++BBI)
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for (BasicBlock::iterator II = BBI->begin(), IE = BBI->end(); II != IE;
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++II)
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++Count;
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return Result(Count);
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}
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private:
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friend AnalysisInfoMixin<TestFunctionAnalysis>;
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static AnalysisKey Key;
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int &Runs;
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};
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AnalysisKey TestFunctionAnalysis::Key;
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class TestModuleAnalysis : public AnalysisInfoMixin<TestModuleAnalysis> {
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public:
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struct Result {
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Result(int Count) : FunctionCount(Count) {}
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int FunctionCount;
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};
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TestModuleAnalysis(int &Runs) : Runs(Runs) {}
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Result run(Module &M, ModuleAnalysisManager &AM) {
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++Runs;
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int Count = 0;
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for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
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++Count;
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return Result(Count);
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}
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private:
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friend AnalysisInfoMixin<TestModuleAnalysis>;
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static AnalysisKey Key;
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int &Runs;
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};
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AnalysisKey TestModuleAnalysis::Key;
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struct TestModulePass : PassInfoMixin<TestModulePass> {
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TestModulePass(int &RunCount) : RunCount(RunCount) {}
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &) {
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++RunCount;
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return PreservedAnalyses::none();
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}
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int &RunCount;
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};
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struct TestPreservingModulePass : PassInfoMixin<TestPreservingModulePass> {
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PreservedAnalyses run(Module &M, ModuleAnalysisManager &) {
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return PreservedAnalyses::all();
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}
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};
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struct TestFunctionPass : PassInfoMixin<TestFunctionPass> {
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TestFunctionPass(int &RunCount, int &AnalyzedInstrCount,
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int &AnalyzedFunctionCount,
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bool OnlyUseCachedResults = false)
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: RunCount(RunCount), AnalyzedInstrCount(AnalyzedInstrCount),
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AnalyzedFunctionCount(AnalyzedFunctionCount),
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OnlyUseCachedResults(OnlyUseCachedResults) {}
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM) {
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++RunCount;
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const ModuleAnalysisManager &MAM =
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AM.getResult<ModuleAnalysisManagerFunctionProxy>(F).getManager();
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if (TestModuleAnalysis::Result *TMA =
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MAM.getCachedResult<TestModuleAnalysis>(*F.getParent()))
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AnalyzedFunctionCount += TMA->FunctionCount;
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if (OnlyUseCachedResults) {
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// Hack to force the use of the cached interface.
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if (TestFunctionAnalysis::Result *AR =
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AM.getCachedResult<TestFunctionAnalysis>(F))
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AnalyzedInstrCount += AR->InstructionCount;
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} else {
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// Typical path just runs the analysis as needed.
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TestFunctionAnalysis::Result &AR = AM.getResult<TestFunctionAnalysis>(F);
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AnalyzedInstrCount += AR.InstructionCount;
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}
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return PreservedAnalyses::all();
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}
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int &RunCount;
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int &AnalyzedInstrCount;
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int &AnalyzedFunctionCount;
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bool OnlyUseCachedResults;
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};
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// A test function pass that invalidates all function analyses for a function
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// with a specific name.
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struct TestInvalidationFunctionPass
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: PassInfoMixin<TestInvalidationFunctionPass> {
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TestInvalidationFunctionPass(StringRef FunctionName) : Name(FunctionName) {}
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PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM) {
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return F.getName() == Name ? PreservedAnalyses::none()
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: PreservedAnalyses::all();
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}
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StringRef Name;
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};
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std::unique_ptr<Module> parseIR(LLVMContext &Context, const char *IR) {
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SMDiagnostic Err;
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return parseAssemblyString(IR, Err, Context);
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}
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class PassManagerTest : public ::testing::Test {
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protected:
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LLVMContext Context;
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std::unique_ptr<Module> M;
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public:
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PassManagerTest()
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: M(parseIR(Context, "define void @f() {\n"
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"entry:\n"
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" call void @g()\n"
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" call void @h()\n"
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" ret void\n"
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"}\n"
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"define void @g() {\n"
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" ret void\n"
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"}\n"
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"define void @h() {\n"
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" ret void\n"
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"}\n")) {}
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};
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TEST(PreservedAnalysesTest, Basic) {
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PreservedAnalyses PA1 = PreservedAnalyses();
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{
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auto PAC = PA1.getChecker<TestFunctionAnalysis>();
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EXPECT_FALSE(PAC.preserved());
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EXPECT_FALSE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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{
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auto PAC = PA1.getChecker<TestModuleAnalysis>();
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EXPECT_FALSE(PAC.preserved());
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EXPECT_FALSE(PAC.preservedSet<AllAnalysesOn<Module>>());
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}
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auto PA2 = PreservedAnalyses::none();
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{
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auto PAC = PA2.getChecker<TestFunctionAnalysis>();
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EXPECT_FALSE(PAC.preserved());
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EXPECT_FALSE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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auto PA3 = PreservedAnalyses::all();
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{
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auto PAC = PA3.getChecker<TestFunctionAnalysis>();
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EXPECT_TRUE(PAC.preserved());
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EXPECT_TRUE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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PreservedAnalyses PA4 = PA1;
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{
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auto PAC = PA4.getChecker<TestFunctionAnalysis>();
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EXPECT_FALSE(PAC.preserved());
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EXPECT_FALSE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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PA4 = PA3;
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{
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auto PAC = PA4.getChecker<TestFunctionAnalysis>();
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EXPECT_TRUE(PAC.preserved());
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EXPECT_TRUE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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PA4 = std::move(PA2);
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{
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auto PAC = PA4.getChecker<TestFunctionAnalysis>();
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EXPECT_FALSE(PAC.preserved());
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EXPECT_FALSE(PAC.preservedSet<AllAnalysesOn<Function>>());
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}
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}
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TEST(PreservedAnalysesTest, Preserve) {
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auto PA = PreservedAnalyses::none();
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PA.preserve<TestFunctionAnalysis>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(PA.getChecker<TestModuleAnalysis>().preserved());
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PA.preserve<TestModuleAnalysis>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_TRUE(PA.getChecker<TestModuleAnalysis>().preserved());
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// Redundant calls are fine.
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PA.preserve<TestFunctionAnalysis>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_TRUE(PA.getChecker<TestModuleAnalysis>().preserved());
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}
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TEST(PreservedAnalysesTest, PreserveSets) {
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auto PA = PreservedAnalyses::none();
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PA.preserveSet<AllAnalysesOn<Function>>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(PA.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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PA.preserveSet<AllAnalysesOn<Module>>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_TRUE(PA.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Mixing is fine.
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PA.preserve<TestFunctionAnalysis>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_TRUE(PA.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Redundant calls are fine.
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PA.preserveSet<AllAnalysesOn<Module>>();
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EXPECT_TRUE(PA.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_TRUE(PA.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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}
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TEST(PreservedAnalysisTest, Intersect) {
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// Setup the initial sets.
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auto PA1 = PreservedAnalyses::none();
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PA1.preserve<TestFunctionAnalysis>();
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PA1.preserveSet<AllAnalysesOn<Module>>();
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auto PA2 = PreservedAnalyses::none();
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PA2.preserve<TestFunctionAnalysis>();
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PA2.preserveSet<AllAnalysesOn<Function>>();
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PA2.preserve<TestModuleAnalysis>();
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PA2.preserveSet<AllAnalysesOn<Module>>();
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auto PA3 = PreservedAnalyses::none();
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PA3.preserve<TestModuleAnalysis>();
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PA3.preserveSet<AllAnalysesOn<Function>>();
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// Self intersection is a no-op.
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auto Intersected = PA1;
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Intersected.intersect(PA1);
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting with all is a no-op.
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Intersected.intersect(PreservedAnalyses::all());
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting a narrow set with a more broad set is the narrow set.
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Intersected.intersect(PA2);
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting a broad set with a more narrow set is the narrow set.
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Intersected = PA2;
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Intersected.intersect(PA1);
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting with empty clears.
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Intersected.intersect(PreservedAnalyses::none());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting non-overlapping clears.
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Intersected = PA1;
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Intersected.intersect(PA3);
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting with moves works in when there is storage on both sides.
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Intersected = PA1;
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auto Tmp = PA2;
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Intersected.intersect(std::move(Tmp));
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// Intersecting with move works for incoming all and existing all.
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auto Tmp2 = PreservedAnalyses::all();
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Intersected.intersect(std::move(Tmp2));
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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Intersected = PreservedAnalyses::all();
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auto Tmp3 = PA1;
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Intersected.intersect(std::move(Tmp3));
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EXPECT_TRUE(Intersected.getChecker<TestFunctionAnalysis>().preserved());
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EXPECT_FALSE(Intersected.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(Intersected.getChecker<TestModuleAnalysis>().preserved());
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EXPECT_TRUE(Intersected.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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}
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TEST(PreservedAnalysisTest, Abandon) {
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auto PA = PreservedAnalyses::none();
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// We can abandon things after they are preserved.
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PA.preserve<TestFunctionAnalysis>();
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PA.abandon<TestFunctionAnalysis>();
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EXPECT_FALSE(PA.getChecker<TestFunctionAnalysis>().preserved());
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// Repeated is fine, and abandoning if they were never preserved is fine.
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PA.abandon<TestFunctionAnalysis>();
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EXPECT_FALSE(PA.getChecker<TestFunctionAnalysis>().preserved());
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PA.abandon<TestModuleAnalysis>();
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EXPECT_FALSE(PA.getChecker<TestModuleAnalysis>().preserved());
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// Even if the sets are preserved, the abandoned analyses' checker won't
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// return true for those sets.
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PA.preserveSet<AllAnalysesOn<Function>>();
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PA.preserveSet<AllAnalysesOn<Module>>();
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EXPECT_FALSE(PA.getChecker<TestFunctionAnalysis>()
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.preservedSet<AllAnalysesOn<Function>>());
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EXPECT_FALSE(PA.getChecker<TestModuleAnalysis>()
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.preservedSet<AllAnalysesOn<Module>>());
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// But an arbitrary (opaque) analysis will still observe the sets as
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// preserved. This also checks that we can use an explicit ID rather than
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// a type.
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AnalysisKey FakeKey, *FakeID = &FakeKey;
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EXPECT_TRUE(PA.getChecker(FakeID).preservedSet<AllAnalysesOn<Function>>());
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EXPECT_TRUE(PA.getChecker(FakeID).preservedSet<AllAnalysesOn<Module>>());
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}
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TEST_F(PassManagerTest, Basic) {
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FunctionAnalysisManager FAM(/*DebugLogging*/ true);
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int FunctionAnalysisRuns = 0;
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FAM.registerPass([&] { return TestFunctionAnalysis(FunctionAnalysisRuns); });
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ModuleAnalysisManager MAM(/*DebugLogging*/ true);
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int ModuleAnalysisRuns = 0;
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MAM.registerPass([&] { return TestModuleAnalysis(ModuleAnalysisRuns); });
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MAM.registerPass([&] { return FunctionAnalysisManagerModuleProxy(FAM); });
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FAM.registerPass([&] { return ModuleAnalysisManagerFunctionProxy(MAM); });
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ModulePassManager MPM;
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// Count the runs over a Function.
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int FunctionPassRunCount1 = 0;
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int AnalyzedInstrCount1 = 0;
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int AnalyzedFunctionCount1 = 0;
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{
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// Pointless scoped copy to test move assignment.
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ModulePassManager NestedMPM(/*DebugLogging*/ true);
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FunctionPassManager FPM;
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{
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// Pointless scope to test move assignment.
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FunctionPassManager NestedFPM(/*DebugLogging*/ true);
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NestedFPM.addPass(TestFunctionPass(
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FunctionPassRunCount1, AnalyzedInstrCount1, AnalyzedFunctionCount1));
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FPM = std::move(NestedFPM);
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}
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NestedMPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
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MPM = std::move(NestedMPM);
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}
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// Count the runs over a module.
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int ModulePassRunCount = 0;
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MPM.addPass(TestModulePass(ModulePassRunCount));
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// Count the runs over a Function in a separate manager.
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int FunctionPassRunCount2 = 0;
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int AnalyzedInstrCount2 = 0;
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int AnalyzedFunctionCount2 = 0;
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{
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FunctionPassManager FPM(/*DebugLogging*/ true);
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FPM.addPass(TestFunctionPass(FunctionPassRunCount2, AnalyzedInstrCount2,
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AnalyzedFunctionCount2));
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MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
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}
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// A third function pass manager but with only preserving intervening passes
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// and with a function pass that invalidates exactly one analysis.
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MPM.addPass(TestPreservingModulePass());
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int FunctionPassRunCount3 = 0;
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int AnalyzedInstrCount3 = 0;
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int AnalyzedFunctionCount3 = 0;
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{
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FunctionPassManager FPM(/*DebugLogging*/ true);
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FPM.addPass(TestFunctionPass(FunctionPassRunCount3, AnalyzedInstrCount3,
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AnalyzedFunctionCount3));
|
|
FPM.addPass(TestInvalidationFunctionPass("f"));
|
|
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
|
|
}
|
|
|
|
// A fourth function pass manager but with only preserving intervening
|
|
// passes but triggering the module analysis.
|
|
MPM.addPass(RequireAnalysisPass<TestModuleAnalysis, Module>());
|
|
int FunctionPassRunCount4 = 0;
|
|
int AnalyzedInstrCount4 = 0;
|
|
int AnalyzedFunctionCount4 = 0;
|
|
{
|
|
FunctionPassManager FPM;
|
|
FPM.addPass(TestFunctionPass(FunctionPassRunCount4, AnalyzedInstrCount4,
|
|
AnalyzedFunctionCount4));
|
|
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
|
|
}
|
|
|
|
// A fifth function pass manager which invalidates one function first but
|
|
// uses only cached results.
|
|
int FunctionPassRunCount5 = 0;
|
|
int AnalyzedInstrCount5 = 0;
|
|
int AnalyzedFunctionCount5 = 0;
|
|
{
|
|
FunctionPassManager FPM(/*DebugLogging*/ true);
|
|
FPM.addPass(TestInvalidationFunctionPass("f"));
|
|
FPM.addPass(TestFunctionPass(FunctionPassRunCount5, AnalyzedInstrCount5,
|
|
AnalyzedFunctionCount5,
|
|
/*OnlyUseCachedResults=*/true));
|
|
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
|
|
}
|
|
|
|
MPM.run(*M, MAM);
|
|
|
|
// Validate module pass counters.
|
|
EXPECT_EQ(1, ModulePassRunCount);
|
|
|
|
// Validate all function pass counter sets are the same.
|
|
EXPECT_EQ(3, FunctionPassRunCount1);
|
|
EXPECT_EQ(5, AnalyzedInstrCount1);
|
|
EXPECT_EQ(0, AnalyzedFunctionCount1);
|
|
EXPECT_EQ(3, FunctionPassRunCount2);
|
|
EXPECT_EQ(5, AnalyzedInstrCount2);
|
|
EXPECT_EQ(0, AnalyzedFunctionCount2);
|
|
EXPECT_EQ(3, FunctionPassRunCount3);
|
|
EXPECT_EQ(5, AnalyzedInstrCount3);
|
|
EXPECT_EQ(0, AnalyzedFunctionCount3);
|
|
EXPECT_EQ(3, FunctionPassRunCount4);
|
|
EXPECT_EQ(5, AnalyzedInstrCount4);
|
|
EXPECT_EQ(9, AnalyzedFunctionCount4);
|
|
EXPECT_EQ(3, FunctionPassRunCount5);
|
|
EXPECT_EQ(2, AnalyzedInstrCount5); // Only 'g' and 'h' were cached.
|
|
EXPECT_EQ(9, AnalyzedFunctionCount5);
|
|
|
|
// Validate the analysis counters:
|
|
// first run over 3 functions, then module pass invalidates
|
|
// second run over 3 functions, nothing invalidates
|
|
// third run over 0 functions, but 1 function invalidated
|
|
// fourth run over 1 function
|
|
// fifth run invalidates 1 function first, but runs over 0 functions
|
|
EXPECT_EQ(7, FunctionAnalysisRuns);
|
|
|
|
EXPECT_EQ(1, ModuleAnalysisRuns);
|
|
}
|
|
|
|
// A customized pass manager that passes extra arguments through the
|
|
// infrastructure.
|
|
typedef AnalysisManager<Function, int> CustomizedAnalysisManager;
|
|
typedef PassManager<Function, CustomizedAnalysisManager, int, int &>
|
|
CustomizedPassManager;
|
|
|
|
class CustomizedAnalysis : public AnalysisInfoMixin<CustomizedAnalysis> {
|
|
public:
|
|
struct Result {
|
|
Result(int I) : I(I) {}
|
|
int I;
|
|
};
|
|
|
|
Result run(Function &F, CustomizedAnalysisManager &AM, int I) {
|
|
return Result(I);
|
|
}
|
|
|
|
private:
|
|
friend AnalysisInfoMixin<CustomizedAnalysis>;
|
|
static AnalysisKey Key;
|
|
};
|
|
|
|
AnalysisKey CustomizedAnalysis::Key;
|
|
|
|
struct CustomizedPass : PassInfoMixin<CustomizedPass> {
|
|
std::function<void(CustomizedAnalysis::Result &, int &)> Callback;
|
|
|
|
template <typename CallbackT>
|
|
CustomizedPass(CallbackT Callback) : Callback(Callback) {}
|
|
|
|
PreservedAnalyses run(Function &F, CustomizedAnalysisManager &AM, int I,
|
|
int &O) {
|
|
Callback(AM.getResult<CustomizedAnalysis>(F, I), O);
|
|
return PreservedAnalyses::none();
|
|
}
|
|
};
|
|
|
|
TEST_F(PassManagerTest, CustomizedPassManagerArgs) {
|
|
CustomizedAnalysisManager AM;
|
|
AM.registerPass([&] { return CustomizedAnalysis(); });
|
|
|
|
CustomizedPassManager PM;
|
|
|
|
// Add an instance of the customized pass that just accumulates the input
|
|
// after it is round-tripped through the analysis.
|
|
int Result = 0;
|
|
PM.addPass(
|
|
CustomizedPass([](CustomizedAnalysis::Result &R, int &O) { O += R.I; }));
|
|
|
|
// Run this over every function with the input of 42.
|
|
for (Function &F : *M)
|
|
PM.run(F, AM, 42, Result);
|
|
|
|
// And ensure that we accumulated the correct result.
|
|
EXPECT_EQ(42 * (int)M->size(), Result);
|
|
}
|
|
|
|
/// A test analysis pass which caches in its result another analysis pass and
|
|
/// uses it to serve queries. This requires the result to invalidate itself
|
|
/// when its dependency is invalidated.
|
|
struct TestIndirectFunctionAnalysis
|
|
: public AnalysisInfoMixin<TestIndirectFunctionAnalysis> {
|
|
struct Result {
|
|
Result(TestFunctionAnalysis::Result &FDep, TestModuleAnalysis::Result &MDep)
|
|
: FDep(FDep), MDep(MDep) {}
|
|
TestFunctionAnalysis::Result &FDep;
|
|
TestModuleAnalysis::Result &MDep;
|
|
|
|
bool invalidate(Function &F, const PreservedAnalyses &PA,
|
|
FunctionAnalysisManager::Invalidator &Inv) {
|
|
auto PAC = PA.getChecker<TestIndirectFunctionAnalysis>();
|
|
return !(PAC.preserved() ||
|
|
PAC.preservedSet<AllAnalysesOn<Function>>()) ||
|
|
Inv.invalidate<TestFunctionAnalysis>(F, PA);
|
|
}
|
|
};
|
|
|
|
TestIndirectFunctionAnalysis(int &Runs) : Runs(Runs) {}
|
|
|
|
/// Run the analysis pass over the function and return a result.
|
|
Result run(Function &F, FunctionAnalysisManager &AM) {
|
|
++Runs;
|
|
auto &FDep = AM.getResult<TestFunctionAnalysis>(F);
|
|
auto &Proxy = AM.getResult<ModuleAnalysisManagerFunctionProxy>(F);
|
|
const ModuleAnalysisManager &MAM = Proxy.getManager();
|
|
// For the test, we insist that the module analysis starts off in the
|
|
// cache.
|
|
auto &MDep = *MAM.getCachedResult<TestModuleAnalysis>(*F.getParent());
|
|
// And register the dependency as module analysis dependencies have to be
|
|
// pre-registered on the proxy.
|
|
Proxy.registerOuterAnalysisInvalidation<TestModuleAnalysis,
|
|
TestIndirectFunctionAnalysis>();
|
|
return Result(FDep, MDep);
|
|
}
|
|
|
|
private:
|
|
friend AnalysisInfoMixin<TestIndirectFunctionAnalysis>;
|
|
static AnalysisKey Key;
|
|
|
|
int &Runs;
|
|
};
|
|
|
|
AnalysisKey TestIndirectFunctionAnalysis::Key;
|
|
|
|
/// A test analysis pass which chaches in its result the result from the above
|
|
/// indirect analysis pass.
|
|
///
|
|
/// This allows us to ensure that whenever an analysis pass is invalidated due
|
|
/// to dependencies (especially dependencies across IR units that trigger
|
|
/// asynchronous invalidation) we correctly detect that this may in turn cause
|
|
/// other analysis to be invalidated.
|
|
struct TestDoublyIndirectFunctionAnalysis
|
|
: public AnalysisInfoMixin<TestDoublyIndirectFunctionAnalysis> {
|
|
struct Result {
|
|
Result(TestIndirectFunctionAnalysis::Result &IDep) : IDep(IDep) {}
|
|
TestIndirectFunctionAnalysis::Result &IDep;
|
|
|
|
bool invalidate(Function &F, const PreservedAnalyses &PA,
|
|
FunctionAnalysisManager::Invalidator &Inv) {
|
|
auto PAC = PA.getChecker<TestDoublyIndirectFunctionAnalysis>();
|
|
return !(PAC.preserved() ||
|
|
PAC.preservedSet<AllAnalysesOn<Function>>()) ||
|
|
Inv.invalidate<TestIndirectFunctionAnalysis>(F, PA);
|
|
}
|
|
};
|
|
|
|
TestDoublyIndirectFunctionAnalysis(int &Runs) : Runs(Runs) {}
|
|
|
|
/// Run the analysis pass over the function and return a result.
|
|
Result run(Function &F, FunctionAnalysisManager &AM) {
|
|
++Runs;
|
|
auto &IDep = AM.getResult<TestIndirectFunctionAnalysis>(F);
|
|
return Result(IDep);
|
|
}
|
|
|
|
private:
|
|
friend AnalysisInfoMixin<TestDoublyIndirectFunctionAnalysis>;
|
|
static AnalysisKey Key;
|
|
|
|
int &Runs;
|
|
};
|
|
|
|
AnalysisKey TestDoublyIndirectFunctionAnalysis::Key;
|
|
|
|
struct LambdaPass : public PassInfoMixin<LambdaPass> {
|
|
using FuncT = std::function<PreservedAnalyses(Function &, FunctionAnalysisManager &)>;
|
|
|
|
LambdaPass(FuncT Func) : Func(std::move(Func)) {}
|
|
|
|
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM) {
|
|
return Func(F, AM);
|
|
}
|
|
|
|
FuncT Func;
|
|
};
|
|
|
|
TEST_F(PassManagerTest, IndirectAnalysisInvalidation) {
|
|
FunctionAnalysisManager FAM(/*DebugLogging*/ true);
|
|
int FunctionAnalysisRuns = 0, ModuleAnalysisRuns = 0,
|
|
IndirectAnalysisRuns = 0, DoublyIndirectAnalysisRuns = 0;
|
|
FAM.registerPass([&] { return TestFunctionAnalysis(FunctionAnalysisRuns); });
|
|
FAM.registerPass(
|
|
[&] { return TestIndirectFunctionAnalysis(IndirectAnalysisRuns); });
|
|
FAM.registerPass([&] {
|
|
return TestDoublyIndirectFunctionAnalysis(DoublyIndirectAnalysisRuns);
|
|
});
|
|
|
|
ModuleAnalysisManager MAM(/*DebugLogging*/ true);
|
|
MAM.registerPass([&] { return TestModuleAnalysis(ModuleAnalysisRuns); });
|
|
MAM.registerPass([&] { return FunctionAnalysisManagerModuleProxy(FAM); });
|
|
FAM.registerPass([&] { return ModuleAnalysisManagerFunctionProxy(MAM); });
|
|
|
|
int InstrCount = 0, FunctionCount = 0;
|
|
ModulePassManager MPM(/*DebugLogging*/ true);
|
|
FunctionPassManager FPM(/*DebugLogging*/ true);
|
|
// First just use the analysis to get the instruction count, and preserve
|
|
// everything.
|
|
FPM.addPass(LambdaPass([&](Function &F, FunctionAnalysisManager &AM) {
|
|
auto &DoublyIndirectResult =
|
|
AM.getResult<TestDoublyIndirectFunctionAnalysis>(F);
|
|
auto &IndirectResult = DoublyIndirectResult.IDep;
|
|
InstrCount += IndirectResult.FDep.InstructionCount;
|
|
FunctionCount += IndirectResult.MDep.FunctionCount;
|
|
return PreservedAnalyses::all();
|
|
}));
|
|
// Next, invalidate
|
|
// - both analyses for "f",
|
|
// - just the underlying (indirect) analysis for "g", and
|
|
// - just the direct analysis for "h".
|
|
FPM.addPass(LambdaPass([&](Function &F, FunctionAnalysisManager &AM) {
|
|
auto &DoublyIndirectResult =
|
|
AM.getResult<TestDoublyIndirectFunctionAnalysis>(F);
|
|
auto &IndirectResult = DoublyIndirectResult.IDep;
|
|
InstrCount += IndirectResult.FDep.InstructionCount;
|
|
FunctionCount += IndirectResult.MDep.FunctionCount;
|
|
auto PA = PreservedAnalyses::none();
|
|
if (F.getName() == "g")
|
|
PA.preserve<TestFunctionAnalysis>();
|
|
else if (F.getName() == "h")
|
|
PA.preserve<TestIndirectFunctionAnalysis>();
|
|
return PA;
|
|
}));
|
|
// Finally, use the analysis again on each function, forcing re-computation
|
|
// for all of them.
|
|
FPM.addPass(LambdaPass([&](Function &F, FunctionAnalysisManager &AM) {
|
|
auto &DoublyIndirectResult =
|
|
AM.getResult<TestDoublyIndirectFunctionAnalysis>(F);
|
|
auto &IndirectResult = DoublyIndirectResult.IDep;
|
|
InstrCount += IndirectResult.FDep.InstructionCount;
|
|
FunctionCount += IndirectResult.MDep.FunctionCount;
|
|
return PreservedAnalyses::all();
|
|
}));
|
|
|
|
// Create a second function pass manager. This will cause the module-level
|
|
// invalidation to occur, which will force yet another invalidation of the
|
|
// indirect function-level analysis as the module analysis it depends on gets
|
|
// invalidated.
|
|
FunctionPassManager FPM2(/*DebugLogging*/ true);
|
|
FPM2.addPass(LambdaPass([&](Function &F, FunctionAnalysisManager &AM) {
|
|
auto &DoublyIndirectResult =
|
|
AM.getResult<TestDoublyIndirectFunctionAnalysis>(F);
|
|
auto &IndirectResult = DoublyIndirectResult.IDep;
|
|
InstrCount += IndirectResult.FDep.InstructionCount;
|
|
FunctionCount += IndirectResult.MDep.FunctionCount;
|
|
return PreservedAnalyses::all();
|
|
}));
|
|
|
|
// Add a requires pass to populate the module analysis and then our function
|
|
// pass pipeline.
|
|
MPM.addPass(RequireAnalysisPass<TestModuleAnalysis, Module>());
|
|
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
|
|
// Now require the module analysis again (it will have been invalidated once)
|
|
// and then use it again from a function pass manager.
|
|
MPM.addPass(RequireAnalysisPass<TestModuleAnalysis, Module>());
|
|
MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM2)));
|
|
MPM.run(*M, MAM);
|
|
|
|
// There are generally two possible runs for each of the three functions. But
|
|
// for one function, we only invalidate the indirect analysis so the base one
|
|
// only gets run five times.
|
|
EXPECT_EQ(5, FunctionAnalysisRuns);
|
|
// The module analysis pass should be run twice here.
|
|
EXPECT_EQ(2, ModuleAnalysisRuns);
|
|
// The indirect analysis is invalidated for each function (either directly or
|
|
// indirectly) and run twice for each.
|
|
EXPECT_EQ(9, IndirectAnalysisRuns);
|
|
EXPECT_EQ(9, DoublyIndirectAnalysisRuns);
|
|
|
|
// There are five instructions in the module and we add the count four
|
|
// times.
|
|
EXPECT_EQ(5 * 4, InstrCount);
|
|
|
|
// There are three functions and we count them four times for each of the
|
|
// three functions.
|
|
EXPECT_EQ(3 * 4 * 3, FunctionCount);
|
|
}
|
|
}
|