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Switch extendInBlock() to take a kill slot instead of the last use slot.

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Three out of four clients prefer this interface which is consistent with
extendIntervalEndTo() and LiveRangeCalc::extend().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139604 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2011-09-13 16:47:56 +00:00
parent c1c622ef0d
commit ee5655dca4
5 changed files with 17 additions and 20 deletions
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7
lib/CodeGen/LiveRangeCalc.cpp
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@@ -63,13 +63,12 @@ void LiveRangeCalc::extend(LiveInterval *LI,
assert(Kill.isValid() && "Invalid SlotIndex");
assert(Indexes && "Missing SlotIndexes");
assert(DomTree && "Missing dominator tree");
SlotIndex LastUse = Kill.getPrevSlot();
MachineBasicBlock *KillMBB = Indexes->getMBBFromIndex(LastUse);
MachineBasicBlock *KillMBB = Indexes->getMBBFromIndex(Kill.getPrevSlot());
assert(Kill && "No MBB at Kill");
// Is there a def in the same MBB we can extend?
if (LI->extendInBlock(Indexes->getMBBStartIdx(KillMBB), LastUse))
if (LI->extendInBlock(Indexes->getMBBStartIdx(KillMBB), Kill))
return;
// Find the single reaching def, or determine if Kill is jointly dominated by
@@ -134,7 +133,7 @@ VNInfo *LiveRangeCalc::findReachingDefs(LiveInterval *LI,
// First time we see Pred. Try to determine the live-out value, but set
// it as null if Pred is live-through with an unknown value.
VNInfo *VNI = LI->extendInBlock(Start, End.getPrevSlot());
VNInfo *VNI = LI->extendInBlock(Start, End);
setLiveOutValue(Pred, VNI);
if (VNI) {
if (TheVNI && TheVNI != VNI)