Import prebuilt clang toolchain for linux.
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+//===- 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;
+
+//===----------------------------------------------------------------------===//
+//
+// InstructionSimplifier - Remove redundant instructions.
+//
+FunctionPass *createInstructionSimplifierPass();
+extern char &InstructionSimplifierID;
+
+/// This function returns a new pass that downgrades the debug info in the
+/// module to line tables only.
+ModulePass *createStripNonLineTableDebugInfoPass();
+}
+
+#endif