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51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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//===- llvm/Analysis/MaximumSpanningTree.h - Interface ----------*- 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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//
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// This module privides means for calculating a maximum spanning tree for the
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// CFG of a function according to a given profile.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_MAXIMUMSPANNINGTREE_H
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#define LLVM_ANALYSIS_MAXIMUMSPANNINGTREE_H
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#include "llvm/Analysis/ProfileInfo.h"
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#include "llvm/Support/raw_ostream.h"
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#include <vector>
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namespace llvm {
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class Function;
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class MaximumSpanningTree {
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public:
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typedef std::vector<ProfileInfo::Edge> MaxSpanTree;
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protected:
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MaxSpanTree MST;
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public:
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static char ID; // Class identification, replacement for typeinfo
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// MaxSpanTree() - Calculates a MST for a function according to a profile.
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// If inverted is true, all the edges *not* in the MST are returned. As a
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// special also all leaf edges of the MST are not included, this makes it
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// easier for the OptimalEdgeProfileInstrumentation to use this MST to do
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// an optimal profiling.
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MaximumSpanningTree(Function *F, ProfileInfo *PI, bool invert);
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virtual MaxSpanTree::iterator begin();
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virtual MaxSpanTree::iterator end();
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virtual void dump();
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};
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} // End llvm namespace
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#endif
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