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Abstract merging of ranges away from number of slots per instruction.
Also make it less aggressive as the current implementation breaks in some cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11696 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -126,7 +126,10 @@ namespace llvm {
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};
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static unsigned getBaseIndex(unsigned index) {
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return index - (index % 4);
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return index - (index % InstrSlots::NUM);
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}
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static unsigned getBoundaryIndex(unsigned index) {
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return getBaseIndex(index + InstrSlots::NUM - 1);
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}
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static unsigned getLoadIndex(unsigned index) {
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return getBaseIndex(index) + InstrSlots::LOAD;
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@ -126,7 +126,10 @@ namespace llvm {
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};
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static unsigned getBaseIndex(unsigned index) {
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return index - (index % 4);
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return index - (index % InstrSlots::NUM);
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}
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static unsigned getBoundaryIndex(unsigned index) {
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return getBaseIndex(index + InstrSlots::NUM - 1);
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}
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static unsigned getLoadIndex(unsigned index) {
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return getBaseIndex(index) + InstrSlots::LOAD;
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@ -227,6 +227,7 @@ void LiveIntervals::updateSpilledInterval(Interval& li, int slot)
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// the new spill weight is now infinity as it cannot be spilled again
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li.weight = std::numeric_limits<float>::infinity();
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DEBUG(std::cerr << '\n');
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DEBUG(std::cerr << "\t\t\t\tupdated interval: " << li << '\n');
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}
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void LiveIntervals::printRegName(unsigned reg) const
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@ -652,8 +653,10 @@ void LiveIntervals::Interval::join(const LiveIntervals::Interval& other)
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LiveIntervals::Interval::Ranges::iterator
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LiveIntervals::Interval::mergeRangesForward(Ranges::iterator it)
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{
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for (Ranges::iterator n = next(it);
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n != ranges.end() && ((it->second & 1) + it->second) >= n->first; ) {
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Ranges::iterator n;
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while ((n = next(it)) != ranges.end()) {
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if (n->first > it->second)
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break;
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it->second = std::max(it->second, n->second);
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n = ranges.erase(n);
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}
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@ -665,7 +668,8 @@ LiveIntervals::Interval::mergeRangesBackward(Ranges::iterator it)
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{
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while (it != ranges.begin()) {
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Ranges::iterator p = prior(it);
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if (it->first > ((p->second & 1) + p->second)) break;
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if (it->first > p->second)
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break;
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it->first = std::min(it->first, p->first);
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it->second = std::max(it->second, p->second);
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@ -126,7 +126,10 @@ namespace llvm {
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};
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static unsigned getBaseIndex(unsigned index) {
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return index - (index % 4);
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return index - (index % InstrSlots::NUM);
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}
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static unsigned getBoundaryIndex(unsigned index) {
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return getBaseIndex(index + InstrSlots::NUM - 1);
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}
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static unsigned getLoadIndex(unsigned index) {
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return getBaseIndex(index) + InstrSlots::LOAD;
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