| //===- llvm/Transforms/Utils.h - Utility Transformations --------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This header file defines prototypes for accessor functions that expose passes |
| // in the Utils transformations library. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_TRANSFORMS_UTILS_H |
| #define LLVM_TRANSFORMS_UTILS_H |
| |
| namespace llvm { |
| |
| class ModulePass; |
| class FunctionPass; |
| class Pass; |
| |
| //===----------------------------------------------------------------------===// |
| // createMetaRenamerPass - Rename everything with metasyntatic names. |
| // |
| ModulePass *createMetaRenamerPass(); |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // LowerInvoke - This pass removes invoke instructions, converting them to call |
| // instructions. |
| // |
| FunctionPass *createLowerInvokePass(); |
| extern char &LowerInvokePassID; |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // InstructionNamer - Give any unnamed non-void instructions "tmp" names. |
| // |
| FunctionPass *createInstructionNamerPass(); |
| extern char &InstructionNamerID; |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // LowerSwitch - This pass converts SwitchInst instructions into a sequence of |
| // chained binary branch instructions. |
| // |
| FunctionPass *createLowerSwitchPass(); |
| extern char &LowerSwitchID; |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // EntryExitInstrumenter pass - Instrument function entry/exit with calls to |
| // mcount(), @__cyg_profile_func_{enter,exit} and the like. There are two |
| // variants, intended to run pre- and post-inlining, respectively. |
| // |
| FunctionPass *createEntryExitInstrumenterPass(); |
| FunctionPass *createPostInlineEntryExitInstrumenterPass(); |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // BreakCriticalEdges - Break all of the critical edges in the CFG by inserting |
| // a dummy basic block. This pass may be "required" by passes that cannot deal |
| // with critical edges. For this usage, a pass must call: |
| // |
| // AU.addRequiredID(BreakCriticalEdgesID); |
| // |
| // This pass obviously invalidates the CFG, but can update forward dominator |
| // (set, immediate dominators, tree, and frontier) information. |
| // |
| FunctionPass *createBreakCriticalEdgesPass(); |
| extern char &BreakCriticalEdgesID; |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // LCSSA - This pass inserts phi nodes at loop boundaries to simplify other loop |
| // optimizations. |
| // |
| Pass *createLCSSAPass(); |
| extern char &LCSSAID; |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // AddDiscriminators - Add DWARF path discriminators to the IR. |
| FunctionPass *createAddDiscriminatorsPass(); |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // PromoteMemoryToRegister - This pass is used to promote memory references to |
| // be register references. A simple example of the transformation performed by |
| // this pass is: |
| // |
| // FROM CODE TO CODE |
| // %X = alloca i32, i32 1 ret i32 42 |
| // store i32 42, i32 *%X |
| // %Y = load i32* %X |
| // ret i32 %Y |
| // |
| FunctionPass *createPromoteMemoryToRegisterPass(); |
| |
| //===----------------------------------------------------------------------===// |
| // |
| // LoopSimplify - Insert Pre-header blocks into the CFG for every function in |
| // the module. This pass updates dominator information, loop information, and |
| // does not add critical edges to the CFG. |
| // |
| // AU.addRequiredID(LoopSimplifyID); |
| // |
| Pass *createLoopSimplifyPass(); |
| extern char &LoopSimplifyID; |
| |
| /// This function returns a new pass that downgrades the debug info in the |
| /// module to line tables only. |
| ModulePass *createStripNonLineTableDebugInfoPass(); |
| } |
| |
| #endif |
