Stop tracking spill slot uses in VirtRegMap.
Nobody cared, StackSlotColoring scans the instructions to find used stack
slots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144485 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h
index 7213088..68d817b 100644
--- a/lib/CodeGen/VirtRegMap.h
+++ b/lib/CodeGen/VirtRegMap.h
@@ -74,12 +74,6 @@
/// mapping.
IndexedMap<unsigned, VirtReg2IndexFunctor> Virt2SplitMap;
- /// LowSpillSlot, HighSpillSlot - Lowest and highest spill slot indexes.
- int LowSpillSlot, HighSpillSlot;
-
- /// SpillSlotToUsesMap - Records uses for each register spill slot.
- SmallVector<SmallPtrSet<MachineInstr*, 4>, 8> SpillSlotToUsesMap;
-
/// createSpillSlot - Allocate a spill slot for RC from MFI.
unsigned createSpillSlot(const TargetRegisterClass *RC);
@@ -89,8 +83,7 @@
public:
static char ID;
VirtRegMap() : MachineFunctionPass(ID), Virt2PhysMap(NO_PHYS_REG),
- Virt2StackSlotMap(NO_STACK_SLOT), Virt2SplitMap(0),
- LowSpillSlot(NO_STACK_SLOT), HighSpillSlot(NO_STACK_SLOT) { }
+ Virt2StackSlotMap(NO_STACK_SLOT), Virt2SplitMap(0) { }
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
@@ -198,19 +191,6 @@
/// the specified stack slot
void assignVirt2StackSlot(unsigned virtReg, int frameIndex);
- /// @brief Records a spill slot use.
- void addSpillSlotUse(int FrameIndex, MachineInstr *MI);
-
- /// @brief Returns true if spill slot has been used.
- bool isSpillSlotUsed(int FrameIndex) const {
- assert(FrameIndex >= 0 && "Spill slot index should not be negative!");
- return !SpillSlotToUsesMap[FrameIndex-LowSpillSlot].empty();
- }
-
- /// RemoveMachineInstrFromMaps - MI is being erased, remove it from the
- /// the folded instruction map and spill point map.
- void RemoveMachineInstrFromMaps(MachineInstr *MI);
-
/// rewrite - Rewrite all instructions in MF to use only physical registers
/// by mapping all virtual register operands to their assigned physical
/// registers.