#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/SetVector.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/CodeGen/LiveInterval.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/Target/TargetMachine.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
namespace llvm {
-class AliasAnalysis;
class LiveIntervals;
class MachineBlockFrequencyInfo;
class MachineLoopInfo;
/// registers are created.
void MRI_NoteNewVirtualRegister(unsigned VReg) override;
+ /// \brief Check if MachineOperand \p MO is a last use/kill either in the
+ /// main live range of \p LI or in one of the matching subregister ranges.
+ bool useIsKill(const LiveInterval &LI, const MachineOperand &MO) const;
+
public:
/// Create a LiveRangeEdit for breaking down parent into smaller pieces.
/// @param parent The register being spilled or split.
/// @param vrm Map of virtual registers to physical registers for this
/// function. If NULL, no virtual register map updates will
/// be done. This could be the case if called before Regalloc.
- LiveRangeEdit(LiveInterval *parent,
- SmallVectorImpl<unsigned> &newRegs,
- MachineFunction &MF,
- LiveIntervals &lis,
- VirtRegMap *vrm,
+ LiveRangeEdit(LiveInterval *parent, SmallVectorImpl<unsigned> &newRegs,
+ MachineFunction &MF, LiveIntervals &lis, VirtRegMap *vrm,
Delegate *delegate = nullptr)
- : Parent(parent), NewRegs(newRegs),
- MRI(MF.getRegInfo()), LIS(lis), VRM(vrm),
- TII(*MF.getTarget().getInstrInfo()),
- TheDelegate(delegate),
- FirstNew(newRegs.size()),
- ScannedRemattable(false) { MRI.setDelegate(this); }
-
- ~LiveRangeEdit() { MRI.resetDelegate(this); }
+ : Parent(parent), NewRegs(newRegs), MRI(MF.getRegInfo()), LIS(lis),
+ VRM(vrm), TII(*MF.getSubtarget().getInstrInfo()),
+ TheDelegate(delegate), FirstNew(newRegs.size()),
+ ScannedRemattable(false) {
+ MRI.setDelegate(this);
+ }
+
+ ~LiveRangeEdit() override { MRI.resetDelegate(this); }
LiveInterval &getParent() const {
assert(Parent && "No parent LiveInterval");