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4dd88f6fbf
is recoded to use IntervalIterators. IntervalIterators can now maintain their own memory or let an external entity do it. Loop depth is a new user of IntervalPartition for calculating the loop nesting depth of a basic block TODO: add IntervalPartition capability to split intervals between the looping portion and the "tail" portion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
856 B
C++
30 lines
856 B
C++
//===- llvm/Analysis/LoopDepth.h - Loop Depth Calculation --------*- C++ -*--=//
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//
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// This file provides a simple class to calculate the loop depth of a
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// BasicBlock.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_ANALYSIS_LOOP_DEPTH_H
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#define LLVM_ANALYSIS_LOOP_DEPTH_H
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#include <map>
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class BasicBlock;
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class Method;
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namespace cfg {class Interval; }
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class LoopDepthCalculator {
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map<const BasicBlock*, unsigned> LoopDepth;
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inline void AddBB(const BasicBlock *BB); // Increment count for this block
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inline void ProcessInterval(cfg::Interval *I);
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public:
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LoopDepthCalculator(Method *M);
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inline unsigned getLoopDepth(const BasicBlock *BB) const {
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map<const BasicBlock*, unsigned>::const_iterator I = LoopDepth.find(BB);
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return I != LoopDepth.end() ? I->second : 0;
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}
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};
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#endif
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