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 "llvm/ADT/StringRef.h"
  18 #include "llvm/Analysis/CGSCCPassManager.h"
  19 #include "llvm/Bitcode/BitcodeWriterPass.h"
  20 #include "llvm/IR/Dominators.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/Passes/PassBuilder.h"
  27 #include "llvm/Support/CommandLine.h"
  28 #include "llvm/Support/ErrorHandling.h"
  29 #include "llvm/Support/ToolOutputFile.h"
  30 #include "llvm/Target/TargetMachine.h"
  31
  32 using namespace llvm;
  33 using namespace opt_tool;
  34
  35 static cl::opt<bool>
  36     DebugPM("debug-pass-manager", cl::Hidden,
  37             cl::desc("Print pass management debugging information"));
  38
  39 bool llvm::runPassPipeline(StringRef Arg0, LLVMContext &Context, Module &M,
  40                            TargetMachine *TM, tool_output_file *Out,
  41                            StringRef PassPipeline, OutputKind OK,
  42                            VerifierKind VK,
  43                            bool ShouldPreserveAssemblyUseListOrder,
  44                            bool ShouldPreserveBitcodeUseListOrder) {
  45   PassBuilder PB(TM);
  46
  47   FunctionAnalysisManager FAM(DebugPM);
  48   CGSCCAnalysisManager CGAM(DebugPM);
  49   ModuleAnalysisManager MAM(DebugPM);
  50
  51   // Register all the basic analyses with the managers.
  52   PB.registerModuleAnalyses(MAM);
  53   PB.registerCGSCCAnalyses(CGAM);
  54   PB.registerFunctionAnalyses(FAM);
  55
  56   // Cross register the analysis managers through their proxies.
  57   MAM.registerPass(FunctionAnalysisManagerModuleProxy(FAM));
  58   MAM.registerPass(CGSCCAnalysisManagerModuleProxy(CGAM));
  59   CGAM.registerPass(FunctionAnalysisManagerCGSCCProxy(FAM));
  60   CGAM.registerPass(ModuleAnalysisManagerCGSCCProxy(MAM));
  61   FAM.registerPass(CGSCCAnalysisManagerFunctionProxy(CGAM));
  62   FAM.registerPass(ModuleAnalysisManagerFunctionProxy(MAM));
  63
  64   ModulePassManager MPM(DebugPM);
  65   if (VK > VK_NoVerifier)
  66     MPM.addPass(VerifierPass());
  67
  68   if (!PB.parsePassPipeline(MPM, PassPipeline, VK == VK_VerifyEachPass,
  69                             DebugPM)) {
  70     errs() << Arg0 << ": unable to parse pass pipeline description.\n";
  71     return false;
  72   }
  73
  74   if (VK > VK_NoVerifier)
  75     MPM.addPass(VerifierPass());
  76
  77   // Add any relevant output pass at the end of the pipeline.
  78   switch (OK) {
  79   case OK_NoOutput:
  80     break; // No output pass needed.
  81   case OK_OutputAssembly:
  82     MPM.addPass(
  83         PrintModulePass(Out->os(), "", ShouldPreserveAssemblyUseListOrder));
  84     break;
  85   case OK_OutputBitcode:
  86     MPM.addPass(
  87         BitcodeWriterPass(Out->os(), ShouldPreserveBitcodeUseListOrder));
  88     break;
  89   }
  90
  91   // Before executing passes, print the final values of the LLVM options.
  92   cl::PrintOptionValues();
  93
  94   // Now that we have all of the passes ready, run them.
  95   MPM.run(M, &MAM);
  96
  97   // Declare success.
  98   if (OK != OK_NoOutput)
  99     Out->keep();
 100   return true;
 101 }