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8e27cb2f34
This was originally a pointer to support pass managers which didn't use AnalysisManagers. However, that doesn't realistically come up much and the complexity of supporting it doesn't really make sense. In fact, *many* parts of the pass manager were just assuming the pointer was never null already. This at least makes it much more explicit and clear. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263219 91177308-0d34-0410-b5e6-96231b3b80d8
128 lines
4.5 KiB
C++
128 lines
4.5 KiB
C++
//===- NewPMDriver.cpp - Driver for opt with new PM -----------------------===//
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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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/// \file
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///
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/// This file is just a split of the code that logically belongs in opt.cpp but
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/// that includes the new pass manager headers.
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///
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//===----------------------------------------------------------------------===//
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#include "NewPMDriver.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Analysis/AliasAnalysis.h"
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#include "llvm/Analysis/CGSCCPassManager.h"
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#include "llvm/Analysis/LoopPassManager.h"
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#include "llvm/Bitcode/BitcodeWriterPass.h"
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#include "llvm/IR/Dominators.h"
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#include "llvm/IR/IRPrintingPasses.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/IR/Verifier.h"
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#include "llvm/Passes/PassBuilder.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/ErrorHandling.h"
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#include "llvm/Support/ToolOutputFile.h"
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#include "llvm/Target/TargetMachine.h"
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using namespace llvm;
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using namespace opt_tool;
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static cl::opt<bool>
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DebugPM("debug-pass-manager", cl::Hidden,
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cl::desc("Print pass management debugging information"));
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// This flag specifies a textual description of the alias analysis pipeline to
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// use when querying for aliasing information. It only works in concert with
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// the "passes" flag above.
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static cl::opt<std::string>
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AAPipeline("aa-pipeline",
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cl::desc("A textual description of the alias analysis "
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"pipeline for handling managed aliasing queries"),
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cl::Hidden);
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bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
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TargetMachine *TM, tool_output_file *Out,
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StringRef PassPipeline, OutputKind OK,
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VerifierKind VK,
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bool ShouldPreserveAssemblyUseListOrder,
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bool ShouldPreserveBitcodeUseListOrder) {
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PassBuilder PB(TM);
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// Specially handle the alias analysis manager so that we can register
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// a custom pipeline of AA passes with it.
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AAManager AA;
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if (!PB.parseAAPipeline(AA, AAPipeline)) {
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errs() << Arg0 << ": unable to parse AA pipeline description.\n";
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return false;
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}
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LoopAnalysisManager LAM(DebugPM);
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FunctionAnalysisManager FAM(DebugPM);
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CGSCCAnalysisManager CGAM(DebugPM);
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ModuleAnalysisManager MAM(DebugPM);
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// Register the AA manager first so that our version is the one used.
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FAM.registerPass([&] { return std::move(AA); });
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// Register all the basic analyses with the managers.
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PB.registerModuleAnalyses(MAM);
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PB.registerCGSCCAnalyses(CGAM);
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PB.registerFunctionAnalyses(FAM);
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PB.registerLoopAnalyses(LAM);
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// Cross register the analysis managers through their proxies.
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MAM.registerPass([&] { return FunctionAnalysisManagerModuleProxy(FAM); });
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MAM.registerPass([&] { return CGSCCAnalysisManagerModuleProxy(CGAM); });
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CGAM.registerPass([&] { return FunctionAnalysisManagerCGSCCProxy(FAM); });
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CGAM.registerPass([&] { return ModuleAnalysisManagerCGSCCProxy(MAM); });
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FAM.registerPass([&] { return CGSCCAnalysisManagerFunctionProxy(CGAM); });
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FAM.registerPass([&] { return ModuleAnalysisManagerFunctionProxy(MAM); });
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FAM.registerPass([&] { return LoopAnalysisManagerFunctionProxy(LAM); });
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LAM.registerPass([&] { return FunctionAnalysisManagerLoopProxy(FAM); });
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ModulePassManager MPM(DebugPM);
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if (VK > VK_NoVerifier)
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MPM.addPass(VerifierPass());
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if (!PB.parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass,
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DebugPM)) {
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errs() << Arg0 << ": unable to parse pass pipeline description.\n";
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return false;
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}
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if (VK > VK_NoVerifier)
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MPM.addPass(VerifierPass());
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// Add any relevant output pass at the end of the pipeline.
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switch (OK) {
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case OK_NoOutput:
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break; // No output pass needed.
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case OK_OutputAssembly:
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MPM.addPass(
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PrintModulePass(Out->os(), "", ShouldPreserveAssemblyUseListOrder));
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break;
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case OK_OutputBitcode:
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MPM.addPass(
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BitcodeWriterPass(Out->os(), ShouldPreserveBitcodeUseListOrder));
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break;
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}
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// Before executing passes, print the final values of the LLVM options.
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cl::PrintOptionValues();
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// Now that we have all of the passes ready, run them.
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MPM.run(M, MAM);
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// Declare success.
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if (OK != OK_NoOutput)
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Out->keep();
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return true;
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}
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