1 //===- NewPMDriver.cpp - Driver for opt with new PM -----------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 /// \file
10 ///
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.
13 ///
14 //===----------------------------------------------------------------------===//
15
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/Analysis/LoopPassManager.h"
21 #include "llvm/Bitcode/BitcodeWriterPass.h"
22 #include "llvm/IR/Dominators.h"
23 #include "llvm/IR/IRPrintingPasses.h"
24 #include "llvm/IR/LLVMContext.h"
25 #include "llvm/IR/Module.h"
26 #include "llvm/IR/PassManager.h"
27 #include "llvm/IR/Verifier.h"
28 #include "llvm/Passes/PassBuilder.h"
29 #include "llvm/Support/CommandLine.h"
30 #include "llvm/Support/ErrorHandling.h"
31 #include "llvm/Support/ToolOutputFile.h"
32 #include "llvm/Target/TargetMachine.h"
33
34 using namespace llvm;
35 using namespace opt_tool;
36
37 static cl::opt<bool>
38 DebugPM("debug-pass-manager", cl::Hidden,
39 cl::desc("Print pass management debugging information"));
40
41 // This flag specifies a textual description of the alias analysis pipeline to
42 // use when querying for aliasing information. It only works in concert with
43 // the "passes" flag above.
44 static cl::opt<std::string>
45 AAPipeline("aa-pipeline",
46 cl::desc("A textual description of the alias analysis "
47 "pipeline for handling managed aliasing queries"),
48 cl::Hidden);
49
runPassPipeline(StringRef Arg0,LLVMContext & Context,Module & M,TargetMachine * TM,tool_output_file * Out,StringRef PassPipeline,OutputKind OK,VerifierKind VK,bool ShouldPreserveAssemblyUseListOrder,bool ShouldPreserveBitcodeUseListOrder)50 bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
51 TargetMachine *TM, tool_output_file *Out,
52 StringRef PassPipeline, OutputKind OK,
53 VerifierKind VK,
54 bool ShouldPreserveAssemblyUseListOrder,
55 bool ShouldPreserveBitcodeUseListOrder) {
56 PassBuilder PB(TM);
57
58 // Specially handle the alias analysis manager so that we can register
59 // a custom pipeline of AA passes with it.
60 AAManager AA;
61 if (!PB.parseAAPipeline(AA, AAPipeline)) {
62 errs() << Arg0 << ": unable to parse AA pipeline description.\n";
63 return false;
64 }
65
66 LoopAnalysisManager LAM(DebugPM);
67 FunctionAnalysisManager FAM(DebugPM);
68 CGSCCAnalysisManager CGAM(DebugPM);
69 ModuleAnalysisManager MAM(DebugPM);
70
71 // Register the AA manager first so that our version is the one used.
72 FAM.registerPass([&] { return std::move(AA); });
73
74 // Register all the basic analyses with the managers.
75 PB.registerModuleAnalyses(MAM);
76 PB.registerCGSCCAnalyses(CGAM);
77 PB.registerFunctionAnalyses(FAM);
78 PB.registerLoopAnalyses(LAM);
79 PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
80
81 ModulePassManager MPM(DebugPM);
82 if (VK > VK_NoVerifier)
83 MPM.addPass(VerifierPass());
84
85 if (!PB.parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass,
86 DebugPM)) {
87 errs() << Arg0 << ": unable to parse pass pipeline description.\n";
88 return false;
89 }
90
91 if (VK > VK_NoVerifier)
92 MPM.addPass(VerifierPass());
93
94 // Add any relevant output pass at the end of the pipeline.
95 switch (OK) {
96 case OK_NoOutput:
97 break; // No output pass needed.
98 case OK_OutputAssembly:
99 MPM.addPass(
100 PrintModulePass(Out->os(), "", ShouldPreserveAssemblyUseListOrder));
101 break;
102 case OK_OutputBitcode:
103 MPM.addPass(
104 BitcodeWriterPass(Out->os(), ShouldPreserveBitcodeUseListOrder));
105 break;
106 }
107
108 // Before executing passes, print the final values of the LLVM options.
109 cl::PrintOptionValues();
110
111 // Now that we have all of the passes ready, run them.
112 MPM.run(M, MAM);
113
114 // Declare success.
115 if (OK != OK_NoOutput)
116 Out->keep();
117 return true;
118 }
119