1 //===- NewPMDriver.cpp - Driver for llc using new PM ----------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 /// \file
9 ///
10 /// This file is just a split of the code that logically belongs in llc.cpp but
11 /// that includes the new pass manager headers.
12 ///
13 //===----------------------------------------------------------------------===//
14
15 #include "NewPMDriver.h"
16 #include "llvm/Analysis/CGSCCPassManager.h"
17 #include "llvm/Analysis/TargetLibraryInfo.h"
18 #include "llvm/CodeGen/CommandFlags.h"
19 #include "llvm/CodeGen/MIRParser/MIRParser.h"
20 #include "llvm/CodeGen/MIRPrinter.h"
21 #include "llvm/CodeGen/MachineModuleInfo.h"
22 #include "llvm/CodeGen/MachinePassManager.h"
23 #include "llvm/CodeGen/TargetPassConfig.h"
24 #include "llvm/IR/DiagnosticInfo.h"
25 #include "llvm/IR/DiagnosticPrinter.h"
26 #include "llvm/IR/IRPrintingPasses.h"
27 #include "llvm/IR/LLVMContext.h"
28 #include "llvm/IR/Module.h"
29 #include "llvm/IR/PassManager.h"
30 #include "llvm/IR/Verifier.h"
31 #include "llvm/IRReader/IRReader.h"
32 #include "llvm/Passes/CodeGenPassBuilder.h" // TODO: Include pass headers properly.
33 #include "llvm/Passes/PassBuilder.h"
34 #include "llvm/Passes/StandardInstrumentations.h"
35 #include "llvm/Support/CommandLine.h"
36 #include "llvm/Support/Debug.h"
37 #include "llvm/Support/Error.h"
38 #include "llvm/Support/ErrorHandling.h"
39 #include "llvm/Support/FormattedStream.h"
40 #include "llvm/Support/ToolOutputFile.h"
41 #include "llvm/Support/WithColor.h"
42 #include "llvm/Target/CGPassBuilderOption.h"
43 #include "llvm/Target/TargetMachine.h"
44 #include "llvm/Target/TargetOptions.h"
45 #include "llvm/Transforms/Scalar/LoopPassManager.h"
46 #include "llvm/Transforms/Utils/Cloning.h"
47
48 namespace llvm {
49 extern cl::opt<bool> PrintPipelinePasses;
50 } // namespace llvm
51
52 using namespace llvm;
53
54 static cl::opt<std::string>
55 RegAlloc("regalloc-npm",
56 cl::desc("Register allocator to use for new pass manager"),
57 cl::Hidden, cl::init("default"));
58
59 static cl::opt<bool>
60 DebugPM("debug-pass-manager", cl::Hidden,
61 cl::desc("Print pass management debugging information"));
62
handleDiagnostics(const DiagnosticInfo & DI)63 bool LLCDiagnosticHandler::handleDiagnostics(const DiagnosticInfo &DI) {
64 DiagnosticHandler::handleDiagnostics(DI);
65 if (DI.getKind() == llvm::DK_SrcMgr) {
66 const auto &DISM = cast<DiagnosticInfoSrcMgr>(DI);
67 const SMDiagnostic &SMD = DISM.getSMDiag();
68
69 SMD.print(nullptr, errs());
70
71 // For testing purposes, we print the LocCookie here.
72 if (DISM.isInlineAsmDiag() && DISM.getLocCookie())
73 WithColor::note() << "!srcloc = " << DISM.getLocCookie() << "\n";
74
75 return true;
76 }
77
78 if (auto *Remark = dyn_cast<DiagnosticInfoOptimizationBase>(&DI))
79 if (!Remark->isEnabled())
80 return true;
81
82 DiagnosticPrinterRawOStream DP(errs());
83 errs() << LLVMContext::getDiagnosticMessagePrefix(DI.getSeverity()) << ": ";
84 DI.print(DP);
85 errs() << "\n";
86 return true;
87 }
88
89 static llvm::ExitOnError ExitOnErr;
90
compileModuleWithNewPM(StringRef Arg0,std::unique_ptr<Module> M,std::unique_ptr<MIRParser> MIR,std::unique_ptr<TargetMachine> Target,std::unique_ptr<ToolOutputFile> Out,std::unique_ptr<ToolOutputFile> DwoOut,LLVMContext & Context,const TargetLibraryInfoImpl & TLII,bool NoVerify,StringRef PassPipeline,CodeGenFileType FileType)91 int llvm::compileModuleWithNewPM(
92 StringRef Arg0, std::unique_ptr<Module> M, std::unique_ptr<MIRParser> MIR,
93 std::unique_ptr<TargetMachine> Target, std::unique_ptr<ToolOutputFile> Out,
94 std::unique_ptr<ToolOutputFile> DwoOut, LLVMContext &Context,
95 const TargetLibraryInfoImpl &TLII, bool NoVerify, StringRef PassPipeline,
96 CodeGenFileType FileType) {
97
98 if (!PassPipeline.empty() && TargetPassConfig::hasLimitedCodeGenPipeline()) {
99 WithColor::warning(errs(), Arg0)
100 << "--passes cannot be used with "
101 << TargetPassConfig::getLimitedCodeGenPipelineReason() << ".\n";
102 return 1;
103 }
104
105 LLVMTargetMachine &LLVMTM = static_cast<LLVMTargetMachine &>(*Target);
106
107 raw_pwrite_stream *OS = &Out->os();
108
109 // Fetch options from TargetPassConfig
110 CGPassBuilderOption Opt = getCGPassBuilderOption();
111 Opt.DisableVerify = NoVerify;
112 Opt.DebugPM = DebugPM;
113 Opt.RegAlloc = RegAlloc;
114
115 MachineModuleInfo MMI(&LLVMTM);
116
117 PassInstrumentationCallbacks PIC;
118 StandardInstrumentations SI(Context, Opt.DebugPM, !NoVerify);
119 registerCodeGenCallback(PIC, LLVMTM);
120
121 MachineFunctionAnalysisManager MFAM;
122 LoopAnalysisManager LAM;
123 FunctionAnalysisManager FAM;
124 CGSCCAnalysisManager CGAM;
125 ModuleAnalysisManager MAM;
126 PassBuilder PB(Target.get(), PipelineTuningOptions(), std::nullopt, &PIC);
127 PB.registerModuleAnalyses(MAM);
128 PB.registerCGSCCAnalyses(CGAM);
129 PB.registerFunctionAnalyses(FAM);
130 PB.registerLoopAnalyses(LAM);
131 PB.registerMachineFunctionAnalyses(MFAM);
132 PB.crossRegisterProxies(LAM, FAM, CGAM, MAM, &MFAM);
133 SI.registerCallbacks(PIC, &MAM);
134
135 FAM.registerPass([&] { return TargetLibraryAnalysis(TLII); });
136 MAM.registerPass([&] { return MachineModuleAnalysis(MMI); });
137
138 ModulePassManager MPM;
139 FunctionPassManager FPM;
140
141 if (!PassPipeline.empty()) {
142 // Construct a custom pass pipeline that starts after instruction
143 // selection.
144
145 if (!MIR) {
146 WithColor::warning(errs(), Arg0) << "-passes is for .mir file only.\n";
147 return 1;
148 }
149
150 // FIXME: verify that there are no IR passes.
151 ExitOnErr(PB.parsePassPipeline(MPM, PassPipeline));
152 MPM.addPass(PrintMIRPreparePass(*OS));
153 MachineFunctionPassManager MFPM;
154 MFPM.addPass(PrintMIRPass(*OS));
155 FPM.addPass(createFunctionToMachineFunctionPassAdaptor(std::move(MFPM)));
156 MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
157
158 if (MIR->parseMachineFunctions(*M, MAM))
159 return 1;
160 } else {
161 ExitOnErr(LLVMTM.buildCodeGenPipeline(
162 MPM, *OS, DwoOut ? &DwoOut->os() : nullptr, FileType, Opt, &PIC));
163 }
164
165 if (PrintPipelinePasses) {
166 std::string PipelineStr;
167 raw_string_ostream OS(PipelineStr);
168 MPM.printPipeline(OS, [&PIC](StringRef ClassName) {
169 auto PassName = PIC.getPassNameForClassName(ClassName);
170 return PassName.empty() ? ClassName : PassName;
171 });
172 outs() << PipelineStr << '\n';
173 return 0;
174 }
175
176 // Before executing passes, print the final values of the LLVM options.
177 cl::PrintOptionValues();
178
179 MPM.run(*M, MAM);
180
181 if (Context.getDiagHandlerPtr()->HasErrors)
182 exit(1);
183
184 // Declare success.
185 Out->keep();
186 if (DwoOut)
187 DwoOut->keep();
188
189 return 0;
190 }
191