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Replace FindLiveRangeContaining() with getVNInfoAt() in LiveIntervalAnalysis.

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This helps hiding the LiveRange class which really should be private.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116244 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2010-10-11 21:45:03 +00:00
parent a1e2194f03
commit 31cc3ec330
1 changed files with 8 additions and 10 deletions
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18
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -570,11 +570,11 @@ exit:
assert(start < end && "did not find end of interval?");
// Already exists? Extend old live interval.
LiveInterval::iterator OldLR = interval.FindLiveRangeContaining(start);
bool Extend = OldLR != interval.end();
VNInfo *ValNo = Extend
? OldLR->valno : interval.getNextValue(start, CopyMI, VNInfoAllocator);
if (MO.isEarlyClobber() && Extend)
VNInfo *ValNo = interval.getVNInfoAt(start);
bool Extend = ValNo != 0;
if (!Extend)
ValNo = interval.getNextValue(start, CopyMI, VNInfoAllocator);
if (Extend && MO.isEarlyClobber())
ValNo->setHasRedefByEC(true);
LiveRange LR(start, end, ValNo);
interval.addRange(LR);
@ -799,10 +799,8 @@ unsigned LiveIntervals::getReMatImplicitUse(const LiveInterval &li,
/// which reaches the given instruction also reaches the specified use index.
bool LiveIntervals::isValNoAvailableAt(const LiveInterval &li, MachineInstr *MI,
SlotIndex UseIdx) const {
SlotIndex Index = getInstructionIndex(MI);
VNInfo *ValNo = li.FindLiveRangeContaining(Index)->valno;
LiveInterval::const_iterator UI = li.FindLiveRangeContaining(UseIdx);
return UI != li.end() && UI->valno == ValNo;
VNInfo *UValNo = li.getVNInfoAt(UseIdx);
return UValNo && UValNo == li.getVNInfoAt(getInstructionIndex(MI));
}
/// isReMaterializable - Returns true if the definition MI of the specified
@ -828,7 +826,7 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li,
ri != re; ++ri) {
MachineInstr *UseMI = &*ri;
SlotIndex UseIdx = getInstructionIndex(UseMI);
if (li.FindLiveRangeContaining(UseIdx)->valno != ValNo)
if (li.getVNInfoAt(UseIdx) != ValNo)
continue;
if (!isValNoAvailableAt(ImpLi, MI, UseIdx))
return false;