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Exclusively use SplitAnalysis::getLastSplitPoint().

Browse Source 
Delete the alternative implementation in LiveIntervalAnalysis.

These functions computed the same thing, but SplitAnalysis caches the
result.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147911 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-01-11 02:07:00 +00:00
parent f96703e62f
commit 74c4f97a46
4 changed files with 14 additions and 31 deletions
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lib/CodeGen/SplitKit.cpp
+10 -2
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@@ -95,6 +95,14 @@ SlotIndex SplitAnalysis::computeLastSplitPoint(unsigned Num) {
return LSP.first;
}
MachineBasicBlock::iterator
SplitAnalysis::getLastSplitPointIter(MachineBasicBlock *MBB) {
SlotIndex LSP = getLastSplitPoint(MBB->getNumber());
if (LSP == LIS.getMBBEndIdx(MBB))
return MBB->end();
return LIS.getInstructionFromIndex(LSP);
}
/// analyzeUses - Count instructions, basic blocks, and loops using CurLI.
void SplitAnalysis::analyzeUses() {
assert(UseSlots.empty() && "Call clear first");
@@ -497,7 +505,7 @@ SlotIndex SplitEditor::enterIntvAtEnd(MachineBasicBlock &MBB) {
}
DEBUG(dbgs() << ": valno " << ParentVNI->id);
VNInfo *VNI = defFromParent(OpenIdx, ParentVNI, Last, MBB,
LIS.getLastSplitPoint(Edit->getParent(), &MBB));
SA.getLastSplitPointIter(&MBB));
RegAssign.insert(VNI->def, End, OpenIdx);
DEBUG(dump());
return VNI->def;
@@ -780,7 +788,7 @@ void SplitEditor::hoistCopiesForSize() {
SlotIndex Last = LIS.getMBBEndIdx(Dom.first).getPrevSlot();
Dom.second =
defFromParent(0, ParentVNI, Last, *Dom.first,
LIS.getLastSplitPoint(Edit->getParent(), Dom.first))->def;
SA.getLastSplitPointIter(Dom.first))->def;
}
// Remove redundant back-copies that are now known to be dominated by another