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 "Passes.h"
18 #include "llvm/ADT/StringRef.h"
19 #include "llvm/Analysis/LazyCallGraph.h"
20 #include "llvm/Bitcode/BitcodeWriterPass.h"
21 #include "llvm/IR/IRPrintingPasses.h"
22 #include "llvm/IR/LLVMContext.h"
23 #include "llvm/IR/Module.h"
24 #include "llvm/IR/PassManager.h"
25 #include "llvm/IR/Verifier.h"
26 #include "llvm/Support/CommandLine.h"
27 #include "llvm/Support/ErrorHandling.h"
28 #include "llvm/Support/ToolOutputFile.h"
29 
30 using namespace llvm;
31 using namespace opt_tool;
32 
33 bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
34                            tool_output_file *Out, StringRef PassPipeline,
35                            OutputKind OK, VerifierKind VK) {
36   FunctionAnalysisManager FAM;
37   ModuleAnalysisManager MAM;
38 
39   // FIXME: Lift this registration of analysis passes into a .def file adjacent
40   // to the one used to associate names with passes.
41   MAM.registerPass(LazyCallGraphAnalysis());
42 
43   // Cross register the analysis managers through their proxies.
44   MAM.registerPass(FunctionAnalysisManagerModuleProxy(FAM));
45   FAM.registerPass(ModuleAnalysisManagerFunctionProxy(MAM));
46 
47   ModulePassManager MPM;
48   if (VK > VK_NoVerifier)
49     MPM.addPass(VerifierPass());
50 
51   if (!parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass)) {
52     errs() << Arg0 << ": unable to parse pass pipeline description.\n";
53     return false;
54   }
55 
56   if (VK > VK_NoVerifier)
57     MPM.addPass(VerifierPass());
58 
59   // Add any relevant output pass at the end of the pipeline.
60   switch (OK) {
61   case OK_NoOutput:
62     break; // No output pass needed.
63   case OK_OutputAssembly:
64     MPM.addPass(PrintModulePass(Out->os()));
65     break;
66   case OK_OutputBitcode:
67     MPM.addPass(BitcodeWriterPass(Out->os()));
68     break;
69   }
70 
71   // Before executing passes, print the final values of the LLVM options.
72   cl::PrintOptionValues();
73 
74   // Now that we have all of the passes ready, run them.
75   MPM.run(&M, &MAM);
76 
77   // Declare success.
78   if (OK != OK_NoOutput)
79     Out->keep();
80   return true;
81 }
82