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Update to in-place spilling framework. Includes live interval scaling and trivial rewriter.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72729 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2009-06-02 16:53:25 +00:00
parent 874ae251c3
commit f41538d1b5
13 changed files with 405 additions and 114 deletions
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23
lib/CodeGen/LiveInterval.cpp
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@@ -359,6 +359,29 @@ void LiveInterval::removeValNo(VNInfo *ValNo) {
}
}
/// scaleNumbering - Renumber VNI and ranges to provide gaps for new
/// instructions.
void LiveInterval::scaleNumbering(unsigned factor) {
// Scale ranges.
for (iterator RI = begin(), RE = end(); RI != RE; ++RI) {
RI->start = InstrSlots::scale(RI->start, factor);
RI->end = InstrSlots::scale(RI->end, factor);
}
// Scale VNI info.
for (vni_iterator VNI = vni_begin(), VNIE = vni_end(); VNI != VNIE; ++VNI) {
VNInfo *vni = *VNI;
if (vni->def != ~0U && vni->def != ~1U) {
vni->def = InstrSlots::scale(vni->def, factor);
}
for (unsigned i = 0; i < vni->kills.size(); ++i) {
if (vni->kills[i] != 0)
vni->kills[i] = InstrSlots::scale(vni->kills[i], factor);
}
}
}
/// getLiveRangeContaining - Return the live range that contains the
/// specified index, or null if there is none.
LiveInterval::const_iterator