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Eliminate the use of spill (reserved) registers.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11476 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-02-15 10:24:21 +00:00
parent 9f3c7f7da9
commit 843b160a20
5 changed files with 354 additions and 364 deletions
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17
lib/CodeGen/LiveIntervalAnalysis.h
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@@ -100,6 +100,9 @@ namespace llvm {
typedef std::map<MachineInstr*, unsigned> Mi2IndexMap;
Mi2IndexMap mi2iMap_;
typedef std::vector<MachineInstr*> Index2MiMap;
Index2MiMap i2miMap_;
typedef std::map<unsigned, Intervals::iterator> Reg2IntervalMap;
Reg2IntervalMap r2iMap_;
@@ -114,14 +117,13 @@ namespace llvm {
/// runOnMachineFunction - pass entry point
virtual bool runOnMachineFunction(MachineFunction&);
unsigned getInstructionIndex(MachineInstr* instr) const;
MachineInstr* getInstructionFromIndex(unsigned index) const;
Intervals& getIntervals() { return intervals_; }
const Reg2RegMap& getJoinedRegMap() const {
return r2rMap_;
}
/// rep - returns the representative of this register
unsigned rep(unsigned reg);
void updateSpilledInterval(Interval& i);
private:
/// computeIntervals - compute live intervals
@@ -151,7 +153,8 @@ namespace llvm {
bool overlapsAliases(const Interval& lhs, const Interval& rhs) const;
unsigned getInstructionIndex(MachineInstr* instr) const;
/// rep - returns the representative of this register
unsigned rep(unsigned reg);
void printRegName(unsigned reg) const;
};