Server : Apache/2.4.41 (Ubuntu) System : Linux absol.cf 5.4.0-198-generic #218-Ubuntu SMP Fri Sep 27 20:18:53 UTC 2024 x86_64 User : www-data ( 33) PHP Version : 7.4.33 Disable Function : pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_get_handler,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,pcntl_async_signals,pcntl_unshare, Directory :  /proc/self/root/usr/lib/llvm-6.0/include/llvm/Transforms/Scalar/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

//===- SimplifyCFG.h - Simplify and canonicalize the CFG --------*- C++ -*-===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
/// \file
/// This file provides the interface for the pass responsible for both
/// simplifying and canonicalizing the CFG.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_TRANSFORMS_SCALAR_SIMPLIFYCFG_H
#define LLVM_TRANSFORMS_SCALAR_SIMPLIFYCFG_H

#include "llvm/IR/Function.h"
#include "llvm/IR/PassManager.h"
#include "llvm/Transforms/Utils/Local.h"

namespace llvm {

/// A pass to simplify and canonicalize the CFG of a function.
///
/// This pass iteratively simplifies the entire CFG of a function. It may change
/// or remove control flow to put the CFG into a canonical form expected by
/// other passes of the mid-level optimizer. Depending on the specified options,
/// it may further optimize control-flow to create non-canonical forms.
class SimplifyCFGPass : public PassInfoMixin<SimplifyCFGPass> {
  SimplifyCFGOptions Options;

public:
  /// The default constructor sets the pass options to create canonical IR,
  /// rather than optimal IR. That is, by default we bypass transformations that
  /// are likely to improve performance but make analysis for other passes more
  /// difficult.
  SimplifyCFGPass()
      : SimplifyCFGPass(SimplifyCFGOptions()
                            .forwardSwitchCondToPhi(false)
                            .convertSwitchToLookupTable(false)
                            .needCanonicalLoops(true)
                            .sinkCommonInsts(false)) {}


  /// Construct a pass with optional optimizations.
  SimplifyCFGPass(const SimplifyCFGOptions &PassOptions);

  /// \brief Run the pass over the function.
  PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
};

}

#endif