[C++] Use 'nullptr'.

[oota-llvm.git] / lib / Target / AArch64 / AArch64RegisterInfo.h

diff --git a/lib/Target/AArch64/AArch64RegisterInfo.h b/lib/Target/AArch64/AArch64RegisterInfo.h
index 4d679439936afaef9d373248d01731f9b58ab7a2..0fbef9485186e0893077c98ffc6ca2a5f5f93d2c 100644 (file)
--- a/lib/Target/AArch64/AArch64RegisterInfo.h
+++ b/lib/Target/AArch64/AArch64RegisterInfo.h
@@ -27,9 +27,16 @@ class AArch64Subtarget;
 struct AArch64RegisterInfo : public AArch64GenRegisterInfo {
   AArch64RegisterInfo();
 
-  const uint16_t *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
+  const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF =nullptr) const;
   const uint32_t *getCallPreservedMask(CallingConv::ID) const;
 
+  unsigned getCSRFirstUseCost() const {
+    // The cost will be compared against BlockFrequency where entry has the
+    // value of 1 << 14. A value of 5 will choose to spill or split really
+    // cold path instead of using a callee-saved register.
+    return 5;
+  }
+
   const uint32_t *getTLSDescCallPreservedMask() const;
 
   BitVector getReservedRegs(const MachineFunction &MF) const;
@@ -37,7 +44,7 @@ struct AArch64RegisterInfo : public AArch64GenRegisterInfo {
 
   void eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj,
                            unsigned FIOperandNum,
-                           RegScavenger *Rs = NULL) const;
+                           RegScavenger *Rs = nullptr) const;
 
   /// getCrossCopyRegClass - Returns a legal register class to copy a register
   /// in the specified class to or from. Returns original class if it is