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Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
-rw-r--r--lib/CodeGen/LiveIntervalAnalysis.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index ae090f58ec..53d74fc224 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -1608,7 +1608,7 @@ std::vector<LiveInterval*> LiveIntervals::
addIntervalsForSpillsFast(const LiveInterval &li,
const MachineLoopInfo *loopInfo,
VirtRegMap &vrm, float& SSWeight) {
- vrm.assignVirt2StackSlot(li.reg);
+ unsigned slot = vrm.assignVirt2StackSlot(li.reg);
std::vector<LiveInterval*> added;
@@ -1631,9 +1631,13 @@ addIntervalsForSpillsFast(const LiveInterval &li,
// Create a new virtual register for the spill interval.
MachineOperand& MO = RI.getOperand();
unsigned NewVReg = 0;
+ bool newInt = false;
if (!VRegMap.count(MO.getParent())) {
VRegMap[MO.getParent()] = NewVReg = mri_->createVirtualRegister(rc);
vrm.grow();
+ vrm.assignVirt2StackSlot(NewVReg, slot);
+
+ newInt = true;
} else
NewVReg = VRegMap[MO.getParent()];
@@ -1666,8 +1670,9 @@ addIntervalsForSpillsFast(const LiveInterval &li,
DOUT << " +" << LR;
nI.addRange(LR);
}
-
- added.push_back(&nI);
+
+ if (newInt)
+ added.push_back(&nI);
DOUT << "\t\t\t\tadded new interval: ";
DEBUG(nI.dump());