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Don't derive from ValueSet to implement class LiveRange; instead, use a

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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
This commit is contained in:
Brian Gaeke 2004-07-29 06:43:06 +00:00
parent 988f5b530a
commit fb8f856f14
1 changed files with 25 additions and 8 deletions
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33
lib/Target/SparcV9/RegAlloc/LiveRange.h
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@ -7,11 +7,8 @@
//
//===----------------------------------------------------------------------===//
//
// Implements a live range using a ValueSet. A LiveRange is a simple set
// of Values.
//
// Since the Value pointed by a use is the same as of its def, it is sufficient
// to keep only defs in a LiveRange.
// Implements a live range using a SetVector of Value *s. We keep only
// defs in a LiveRange.
//
//===----------------------------------------------------------------------===//
@ -19,15 +16,23 @@
#define LIVERANGE_H
#include "llvm/Value.h"
#include "llvm/CodeGen/ValueSet.h"
#include "Support/SetVector.h"
#include <iostream>
namespace llvm {
class RegClass;
class IGNode;
class LiveRange : public ValueSet {
RegClass *MyRegClass; // register class (e.g., int, FP) for this LR
class LiveRange {
public:
typedef SetVector<const Value *> ValueContainerType;
typedef ValueContainerType::iterator iterator;
typedef ValueContainerType::const_iterator const_iterator;
private:
ValueContainerType MyValues; // Values in this LiveRange
RegClass *MyRegClass; // register class (e.g., int, FP) for this LR
/// doesSpanAcrossCalls - Does this live range span across calls?
/// This information is used by graph coloring algo to avoid allocating
@ -70,6 +75,13 @@ class LiveRange : public ValueSet {
unsigned SpillCost;
public:
iterator begin() { return MyValues.begin(); }
const_iterator begin() const { return MyValues.begin(); }
iterator end() { return MyValues.end(); }
const_iterator end() const { return MyValues.end(); }
bool insert(const Value *&X) { return MyValues.insert (X); }
void insert(iterator b, iterator e) { MyValues.insert (b, e); }
LiveRange() {
Color = SuggestedColor = -1; // not yet colored
mustSpill = false;
@ -172,6 +184,11 @@ public:
}
};
static inline std::ostream &operator << (std::ostream &os, const LiveRange &lr) {
os << "LiveRange@" << (void *)(&lr);
return os;
};
} // End llvm namespace
#endif