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9a941b2028
This should be sufficient to replace the initial (minor) function pass pipeline in Clang with the new pass manager. I'll probably add an (off by default) flag to do that just to ensure we can get extra testing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@227726 91177308-0d34-0410-b5e6-96231b3b80d8
47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
//===- SimplifyCFG.h - Simplify and canonicalize the CFG --------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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/// \file
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/// This file provides the interface for the pass responsible for both
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/// simplifying and canonicalizing the CFG.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_SCALAR_SIMPLIFYCFG_H
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#define LLVM_TRANSFORMS_SCALAR_SIMPLIFYCFG_H
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#include "llvm/IR/Function.h"
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#include "llvm/IR/PassManager.h"
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namespace llvm {
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/// \brief A pass to simplify and canonicalize the CFG of a function.
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///
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/// This pass iteratively simplifies the entire CFG of a function, removing
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/// unnecessary control flows and bringing it into the canonical form expected
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/// by the rest of the mid-level optimizer.
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class SimplifyCFGPass {
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int BonusInstThreshold;
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public:
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static StringRef name() { return "SimplifyCFGPass"; }
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/// \brief Construct a pass with the default thresholds.
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SimplifyCFGPass();
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/// \brief Construct a pass with a specific bonus threshold.
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SimplifyCFGPass(int BonusInstThreshold);
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/// \brief Run the pass over the function.
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PreservedAnalyses run(Function &F, AnalysisManager<Function> *AM);
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};
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}
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#endif
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