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Represent RegUnit liveness with LiveRange instance

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Previously LiveInterval has been used, but having a spill weight and
register number is unnecessary for a register unit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192397 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2013-10-10 21:29:02 +00:00
parent e25dde550b
commit 4f3b5e8c92
13 changed files with 132 additions and 129 deletions
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6
lib/CodeGen/LiveRangeEdit.cpp
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@ -262,9 +262,9 @@ void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink) {
else if (MOI->isDef()) {
for (MCRegUnitIterator Units(Reg, MRI.getTargetRegisterInfo());
Units.isValid(); ++Units) {
if (LiveInterval *LI = LIS.getCachedRegUnit(*Units)) {
if (VNInfo *VNI = LI->getVNInfoAt(Idx))
LI->removeValNo(VNI);
if (LiveRange *LR = LIS.getCachedRegUnit(*Units)) {
if (VNInfo *VNI = LR->getVNInfoAt(Idx))
LR->removeValNo(VNI);
}
}
}