[PM] Push the debug option for the new pass manager into the opt tool
[oota-llvm.git] / tools / opt / NewPMDriver.cpp
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/CGSCCPassManager.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 static cl::opt<bool>
34     DebugPM("debug-pass-manager", cl::Hidden,
35             cl::desc("Print pass management debugging information"));
36
37 bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
38                            tool_output_file *Out, StringRef PassPipeline,
39                            OutputKind OK, VerifierKind VK) {
40   FunctionAnalysisManager FAM(DebugPM);
41   CGSCCAnalysisManager CGAM(DebugPM);
42   ModuleAnalysisManager MAM(DebugPM);
43
44   // Register all the basic analyses with the managers.
45   registerModuleAnalyses(MAM);
46   registerCGSCCAnalyses(CGAM);
47   registerFunctionAnalyses(FAM);
48
49   // Cross register the analysis managers through their proxies.
50   MAM.registerPass(FunctionAnalysisManagerModuleProxy(FAM));
51   MAM.registerPass(CGSCCAnalysisManagerModuleProxy(CGAM));
52   CGAM.registerPass(FunctionAnalysisManagerCGSCCProxy(FAM));
53   CGAM.registerPass(ModuleAnalysisManagerCGSCCProxy(MAM));
54   FAM.registerPass(CGSCCAnalysisManagerFunctionProxy(CGAM));
55   FAM.registerPass(ModuleAnalysisManagerFunctionProxy(MAM));
56
57   ModulePassManager MPM(DebugPM);
58   if (VK > VK_NoVerifier)
59     MPM.addPass(VerifierPass());
60
61   if (!parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass, DebugPM)) {
62     errs() << Arg0 << ": unable to parse pass pipeline description.\n";
63     return false;
64   }
65
66   if (VK > VK_NoVerifier)
67     MPM.addPass(VerifierPass());
68
69   // Add any relevant output pass at the end of the pipeline.
70   switch (OK) {
71   case OK_NoOutput:
72     break; // No output pass needed.
73   case OK_OutputAssembly:
74     MPM.addPass(PrintModulePass(Out->os()));
75     break;
76   case OK_OutputBitcode:
77     MPM.addPass(BitcodeWriterPass(Out->os()));
78     break;
79   }
80
81   // Before executing passes, print the final values of the LLVM options.
82   cl::PrintOptionValues();
83
84   // Now that we have all of the passes ready, run them.
85   MPM.run(M, &MAM);
86
87   // Declare success.
88   if (OK != OK_NoOutput)
89     Out->keep();
90   return true;
91 }