6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
52 lines
1.9 KiB
C++
52 lines
1.9 KiB
C++
//===- SimplifyCFG.h - Simplify and canonicalize the CFG --------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
/// \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/SimplifyCFGOptions.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();
|
|
|
|
/// Construct a pass with optional optimizations.
|
|
SimplifyCFGPass(const SimplifyCFGOptions &PassOptions);
|
|
|
|
/// Run the pass over the function.
|
|
PreservedAnalyses run(Function &F, FunctionAnalysisManager &AM);
|
|
|
|
void printPipeline(raw_ostream &OS,
|
|
function_ref<StringRef(StringRef)> MapClassName2PassName);
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|