1 //===- NewPMDriver.cpp - Driver for opt with new PM -----------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
11 /// This file is just a split of the code that logically belongs in opt.cpp but
12 /// that includes the new pass manager headers.
14 //===----------------------------------------------------------------------===//
16 #include "NewPMDriver.h"
17 #include "llvm/ADT/StringRef.h"
18 #include "llvm/Analysis/AliasAnalysis.h"
19 #include "llvm/Analysis/CGSCCPassManager.h"
20 #include "llvm/Bitcode/BitcodeWriterPass.h"
21 #include "llvm/IR/Dominators.h"
22 #include "llvm/IR/IRPrintingPasses.h"
23 #include "llvm/IR/LLVMContext.h"
24 #include "llvm/IR/Module.h"
25 #include "llvm/IR/PassManager.h"
26 #include "llvm/IR/Verifier.h"
27 #include "llvm/Passes/PassBuilder.h"
28 #include "llvm/Support/CommandLine.h"
29 #include "llvm/Support/ErrorHandling.h"
30 #include "llvm/Support/ToolOutputFile.h"
31 #include "llvm/Target/TargetMachine.h"
32 #include "llvm/Transforms/IPO/ThinLTOBitcodeWriter.h"
33 #include "llvm/Transforms/Scalar/LoopPassManager.h"
36 using namespace opt_tool;
39 DebugPM("debug-pass-manager", cl::Hidden,
40 cl::desc("Print pass management debugging information"));
42 // This flag specifies a textual description of the alias analysis pipeline to
43 // use when querying for aliasing information. It only works in concert with
44 // the "passes" flag above.
45 static cl::opt<std::string>
46 AAPipeline("aa-pipeline",
47 cl::desc("A textual description of the alias analysis "
48 "pipeline for handling managed aliasing queries"),
51 bool llvm::runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
52 tool_output_file *Out,
53 tool_output_file *ThinLTOLinkOut,
54 StringRef PassPipeline, OutputKind OK,
56 bool ShouldPreserveAssemblyUseListOrder,
57 bool ShouldPreserveBitcodeUseListOrder,
58 bool EmitSummaryIndex, bool EmitModuleHash) {
61 // Specially handle the alias analysis manager so that we can register
62 // a custom pipeline of AA passes with it.
64 if (!PB.parseAAPipeline(AA, AAPipeline)) {
65 errs() << Arg0 << ": unable to parse AA pipeline description.\n";
69 LoopAnalysisManager LAM(DebugPM);
70 FunctionAnalysisManager FAM(DebugPM);
71 CGSCCAnalysisManager CGAM(DebugPM);
72 ModuleAnalysisManager MAM(DebugPM);
74 // Register the AA manager first so that our version is the one used.
75 FAM.registerPass([&] { return std::move(AA); });
77 // Register all the basic analyses with the managers.
78 PB.registerModuleAnalyses(MAM);
79 PB.registerCGSCCAnalyses(CGAM);
80 PB.registerFunctionAnalyses(FAM);
81 PB.registerLoopAnalyses(LAM);
82 PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
84 ModulePassManager MPM(DebugPM);
85 if (VK > VK_NoVerifier)
86 MPM.addPass(VerifierPass());
88 if (!PB.parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass,
90 errs() << Arg0 << ": unable to parse pass pipeline description.\n";
94 if (VK > VK_NoVerifier)
95 MPM.addPass(VerifierPass());
97 // Add any relevant output pass at the end of the pipeline.
100 break; // No output pass needed.
101 case OK_OutputAssembly:
103 PrintModulePass(Out->os(), "", ShouldPreserveAssemblyUseListOrder));
105 case OK_OutputBitcode:
106 MPM.addPass(BitcodeWriterPass(Out->os(), ShouldPreserveBitcodeUseListOrder,
107 EmitSummaryIndex, EmitModuleHash));
109 case OK_OutputThinLTOBitcode:
110 MPM.addPass(ThinLTOBitcodeWriterPass(
111 Out->os(), ThinLTOLinkOut ? &ThinLTOLinkOut->os() : nullptr));
115 // Before executing passes, print the final values of the LLVM options.
116 cl::PrintOptionValues();
118 // Now that we have all of the passes ready, run them.
122 if (OK != OK_NoOutput) {
124 if (OK == OK_OutputThinLTOBitcode && ThinLTOLinkOut)
125 ThinLTOLinkOut->keep();