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Don't derive from ValueSet to implement class LiveRange; instead, use a
SetVector<Value *> data member. Add << operator for LiveRanges (a dumb one, for now.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15320 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -7,11 +7,8 @@
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//
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//===----------------------------------------------------------------------===//
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//
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// Implements a live range using a ValueSet. A LiveRange is a simple set
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// of Values.
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//
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// Since the Value pointed by a use is the same as of its def, it is sufficient
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// to keep only defs in a LiveRange.
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// Implements a live range using a SetVector of Value *s. We keep only
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// defs in a LiveRange.
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//
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//===----------------------------------------------------------------------===//
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@ -19,15 +16,23 @@
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#define LIVERANGE_H
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#include "llvm/Value.h"
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#include "llvm/CodeGen/ValueSet.h"
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#include "Support/SetVector.h"
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#include <iostream>
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namespace llvm {
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class RegClass;
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class IGNode;
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class LiveRange : public ValueSet {
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RegClass *MyRegClass; // register class (e.g., int, FP) for this LR
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class LiveRange {
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public:
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typedef SetVector<const Value *> ValueContainerType;
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typedef ValueContainerType::iterator iterator;
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typedef ValueContainerType::const_iterator const_iterator;
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private:
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ValueContainerType MyValues; // Values in this LiveRange
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RegClass *MyRegClass; // register class (e.g., int, FP) for this LR
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/// doesSpanAcrossCalls - Does this live range span across calls?
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/// This information is used by graph coloring algo to avoid allocating
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@ -70,6 +75,13 @@ class LiveRange : public ValueSet {
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unsigned SpillCost;
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public:
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iterator begin() { return MyValues.begin(); }
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const_iterator begin() const { return MyValues.begin(); }
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iterator end() { return MyValues.end(); }
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const_iterator end() const { return MyValues.end(); }
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bool insert(const Value *&X) { return MyValues.insert (X); }
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void insert(iterator b, iterator e) { MyValues.insert (b, e); }
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LiveRange() {
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Color = SuggestedColor = -1; // not yet colored
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mustSpill = false;
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@ -172,6 +184,11 @@ public:
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}
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};
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static inline std::ostream &operator << (std::ostream &os, const LiveRange &lr) {
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os << "LiveRange@" << (void *)(&lr);
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return os;
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};
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} // End llvm namespace
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#endif
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