Re-enable register pressure aware machine licm with fixes. Hoist() may have

erased the instruction during LICM so UpdateRegPressureAfter() should not
reference it afterwards.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116845 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/ARM/ARMBaseInstrInfo.h

@@ -377,6 +377,11 @@ private:
                         unsigned DefIdx, unsigned DefAlign,
                         const TargetInstrDesc &UseTID,
                         unsigned UseIdx, unsigned UseAlign) const;
+
+  bool hasHighOperandLatency(const InstrItineraryData *ItinData,
+                             const MachineRegisterInfo *MRI,
+                             const MachineInstr *DefMI, unsigned DefIdx,
+                             const MachineInstr *UseMI, unsigned UseIdx) const;
 };
 
 static inline