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      1 //===- NewPMDriver.h - Function to drive opt with the new PM ----*- C++ -*-===//
      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 /// A single function which is called to drive the opt behavior for the new
     12 /// PassManager.
     13 ///
     14 /// This is only in a separate TU with a header to avoid including all of the
     15 /// old pass manager headers and the new pass manager headers into the same
     16 /// file. Eventually all of the routines here will get folded back into
     17 /// opt.cpp.
     18 ///
     19 //===----------------------------------------------------------------------===//
     20 
     21 #ifndef LLVM_TOOLS_OPT_NEWPMDRIVER_H
     22 #define LLVM_TOOLS_OPT_NEWPMDRIVER_H
     23 
     24 namespace llvm {
     25 class StringRef;
     26 class LLVMContext;
     27 class Module;
     28 class TargetMachine;
     29 class ToolOutputFile;
     30 
     31 namespace opt_tool {
     32 enum OutputKind {
     33   OK_NoOutput,
     34   OK_OutputAssembly,
     35   OK_OutputBitcode,
     36   OK_OutputThinLTOBitcode,
     37 };
     38 enum VerifierKind {
     39   VK_NoVerifier,
     40   VK_VerifyInAndOut,
     41   VK_VerifyEachPass
     42 };
     43 }
     44 
     45 /// Driver function to run the new pass manager over a module.
     46 ///
     47 /// This function only exists factored away from opt.cpp in order to prevent
     48 /// inclusion of the new pass manager headers and the old headers into the same
     49 /// file. It's interface is consequentially somewhat ad-hoc, but will go away
     50 /// when the transition finishes.
     51 ///
     52 /// ThinLTOLinkOut is only used when OK is OK_OutputThinLTOBitcode, and can be
     53 /// nullptr.
     54 bool runPassPipeline(StringRef Arg0, Module &M, TargetMachine *TM,
     55                      ToolOutputFile *Out, ToolOutputFile *ThinLinkOut,
     56                      ToolOutputFile *OptRemarkFile, StringRef PassPipeline,
     57                      opt_tool::OutputKind OK, opt_tool::VerifierKind VK,
     58                      bool ShouldPreserveAssemblyUseListOrder,
     59                      bool ShouldPreserveBitcodeUseListOrder,
     60                      bool EmitSummaryIndex, bool EmitModuleHash,
     61                      bool EnableDebugify);
     62 } // namespace llvm
     63 
     64 #endif
     65