6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
125 lines
4.4 KiB
C++
125 lines
4.4 KiB
C++
//===- llvm/Transforms/Utils.h - Utility Transformations --------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This header file defines prototypes for accessor functions that expose passes
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// in the Utils transformations library.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_H
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#define LLVM_TRANSFORMS_UTILS_H
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namespace llvm {
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class ModulePass;
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class FunctionPass;
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class Pass;
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//===----------------------------------------------------------------------===//
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//
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// LowerInvoke - This pass removes invoke instructions, converting them to call
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// instructions.
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//
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FunctionPass *createLowerInvokePass();
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extern char &LowerInvokePassID;
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//===----------------------------------------------------------------------===//
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//
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// LowerSwitch - This pass converts SwitchInst instructions into a sequence of
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// chained binary branch instructions.
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//
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FunctionPass *createLowerSwitchPass();
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extern char &LowerSwitchID;
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//===----------------------------------------------------------------------===//
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//
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// EntryExitInstrumenter pass - Instrument function entry/exit with calls to
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// mcount(), @__cyg_profile_func_{enter,exit} and the like. There are two
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// variants, intended to run pre- and post-inlining, respectively. Only the
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// post-inlining variant is used with the legacy pass manager.
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//
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FunctionPass *createPostInlineEntryExitInstrumenterPass();
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//===----------------------------------------------------------------------===//
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//
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// BreakCriticalEdges - Break all of the critical edges in the CFG by inserting
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// a dummy basic block. This pass may be "required" by passes that cannot deal
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// with critical edges. For this usage, a pass must call:
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//
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// AU.addRequiredID(BreakCriticalEdgesID);
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//
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// This pass obviously invalidates the CFG, but can update forward dominator
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// (set, immediate dominators, tree, and frontier) information.
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//
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FunctionPass *createBreakCriticalEdgesPass();
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extern char &BreakCriticalEdgesID;
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//===----------------------------------------------------------------------===//
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//
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// LCSSA - This pass inserts phi nodes at loop boundaries to simplify other loop
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// optimizations.
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//
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Pass *createLCSSAPass();
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extern char &LCSSAID;
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//===----------------------------------------------------------------------===//
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//
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// PromoteMemoryToRegister - This pass is used to promote memory references to
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// be register references. A simple example of the transformation performed by
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// this pass is:
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//
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// FROM CODE TO CODE
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// %X = alloca i32, i32 1 ret i32 42
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// store i32 42, i32 *%X
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// %Y = load i32* %X
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// ret i32 %Y
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//
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FunctionPass *createPromoteMemoryToRegisterPass();
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//===----------------------------------------------------------------------===//
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//
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// LoopSimplify - Insert Pre-header blocks into the CFG for every function in
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// the module. This pass updates dominator information, loop information, and
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// does not add critical edges to the CFG.
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//
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// AU.addRequiredID(LoopSimplifyID);
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//
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Pass *createLoopSimplifyPass();
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extern char &LoopSimplifyID;
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//===----------------------------------------------------------------------===//
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//
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// UnifyLoopExits - For each loop, creates a new block N such that all exiting
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// blocks branch to N, and then N distributes control flow to all the original
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// exit blocks.
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//
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FunctionPass *createUnifyLoopExitsPass();
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//===----------------------------------------------------------------------===//
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//
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// FixIrreducible - Convert each SCC with irreducible control-flow
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// into a natural loop.
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//
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FunctionPass *createFixIrreduciblePass();
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//===----------------------------------------------------------------------===//
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//
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// CanonicalizeFreezeInLoops - Canonicalize freeze instructions in loops so they
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// don't block SCEV.
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//
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Pass *createCanonicalizeFreezeInLoopsPass();
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//===----------------------------------------------------------------------===//
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// LowerGlobalDtorsLegacy - Lower @llvm.global_dtors by creating wrapper
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// functions that are registered in @llvm.global_ctors and which contain a call
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// to `__cxa_atexit` to register their destructor functions.
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ModulePass *createLowerGlobalDtorsLegacyPass();
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} // namespace llvm
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#endif
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