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When spilling an register, introduce a new temporary for each of its

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spills. This allows for more flexibility when allocating registers for
spill code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@13907 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-05-30 07:24:39 +00:00
parent 25d4b54f93
commit 26f5a69e52
4 changed files with 89 additions and 60 deletions
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10
lib/CodeGen/LiveIntervalAnalysis.h
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@ -80,9 +80,9 @@ namespace llvm {
}
};
struct EndPointComp {
bool operator()(const Interval& lhs, const Interval& rhs) {
return lhs.ranges.back().second < rhs.ranges.back().second;
struct StartPointPtrComp {
bool operator()(const Interval* lhs, const Interval* rhs) {
return lhs->ranges.front().first < rhs->ranges.front().first;
}
};
@ -164,7 +164,9 @@ namespace llvm {
Intervals& getIntervals() { return intervals_; }
void updateSpilledInterval(Interval& i, VirtRegMap& vrm, int slot);
std::vector<Interval*> addIntervalsForSpills(const Interval& i,
VirtRegMap& vrm,
int slot);
private:
/// computeIntervals - compute live intervals