Remember to track spill slot uses in VirtRegMap when inserting loads and stores.
LocalRewriter::runOnMachineFunction uses this information to mark dead spill
slots.
This means that InlineSpiller now also works for functions that spill.
llvm-svn: 107302
diff --git a/llvm/lib/CodeGen/Spiller.cpp b/llvm/lib/CodeGen/Spiller.cpp
index ad65e9f..19987af 100644
--- a/llvm/lib/CodeGen/Spiller.cpp
+++ b/llvm/lib/CodeGen/Spiller.cpp
@@ -137,6 +137,7 @@
MachineInstr *loadInstr(prior(miItr));
SlotIndex loadIndex =
lis->InsertMachineInstrInMaps(loadInstr).getDefIndex();
+ vrm->addSpilSlotUse(ss, loadInstr);
SlotIndex endIndex = loadIndex.getNextIndex();
VNInfo *loadVNI =
newLI->getNextValue(loadIndex, 0, true, lis->getVNInfoAllocator());
@@ -150,6 +151,7 @@
MachineInstr *storeInstr(llvm::next(miItr));
SlotIndex storeIndex =
lis->InsertMachineInstrInMaps(storeInstr).getDefIndex();
+ vrm->addSpilSlotUse(ss, storeInstr);
SlotIndex beginIndex = storeIndex.getPrevIndex();
VNInfo *storeVNI =
newLI->getNextValue(beginIndex, 0, true, lis->getVNInfoAllocator());