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Don't attempt to update SpillSlotToUsesMap for stack slots that aren't

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generated by the spiller.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51439 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Greene 2008-05-22 21:12:21 +00:00
parent 785c6af979
commit cff860801e
1 changed files with 14 additions and 2 deletions
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16
lib/CodeGen/VirtRegMap.cpp
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@ -147,8 +147,14 @@ int VirtRegMap::getEmergencySpillSlot(const TargetRegisterClass *RC) {
void VirtRegMap::addSpillSlotUse(int FI, MachineInstr *MI) {
if (!MF.getFrameInfo()->isFixedObjectIndex(FI)) {
assert(FI >= 0 && "Spill slot index should not be negative!");
SpillSlotToUsesMap[FI-LowSpillSlot].insert(MI);
// If FI < LowSpillSlot, this stack reference was produced by
// instruction selection and is not a spill
if (FI >= LowSpillSlot) {
assert(FI >= 0 && "Spill slot index should not be negative!");
assert(FI-LowSpillSlot < SpillSlotToUsesMap.size()
&& "Invalid spill slot");
SpillSlotToUsesMap[FI-LowSpillSlot].insert(MI);
}
}
}
@ -179,6 +185,12 @@ void VirtRegMap::RemoveMachineInstrFromMaps(MachineInstr *MI) {
int FI = MO.getIndex();
if (MF.getFrameInfo()->isFixedObjectIndex(FI))
continue;
// This stack reference was produced by instruction selection and
// is not a spill
if (FI < LowSpillSlot)
continue;
assert(FI-LowSpillSlot < SpillSlotToUsesMap.size()
&& "Invalid spill slot");
SpillSlotToUsesMap[FI-LowSpillSlot].erase(MI);
}
MI2VirtMap.erase(MI);