[AArch64] Simplify some TRI/TII getters. NFC.
We don't need static_casts when we use the right Subtarget. llvm-svn: 255836
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@ -280,9 +280,9 @@ void AArch64FrameLowering::emitPrologue(MachineFunction &MF,
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MachineBasicBlock::iterator MBBI = MBB.begin();
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const MachineFrameInfo *MFI = MF.getFrameInfo();
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const Function *Fn = MF.getFunction();
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const AArch64RegisterInfo *RegInfo = static_cast<const AArch64RegisterInfo *>(
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MF.getSubtarget().getRegisterInfo());
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const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
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const AArch64Subtarget &Subtarget = MF.getSubtarget<AArch64Subtarget>();
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const AArch64RegisterInfo *RegInfo = Subtarget.getRegisterInfo();
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const TargetInstrInfo *TII = Subtarget.getInstrInfo();
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MachineModuleInfo &MMI = MF.getMMI();
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AArch64FunctionInfo *AFI = MF.getInfo<AArch64FunctionInfo>();
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bool needsFrameMoves = MMI.hasDebugInfo() || Fn->needsUnwindTableEntry();
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@ -538,10 +538,9 @@ void AArch64FrameLowering::emitEpilogue(MachineFunction &MF,
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MachineBasicBlock &MBB) const {
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MachineBasicBlock::iterator MBBI = MBB.getLastNonDebugInstr();
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MachineFrameInfo *MFI = MF.getFrameInfo();
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const AArch64InstrInfo *TII =
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static_cast<const AArch64InstrInfo *>(MF.getSubtarget().getInstrInfo());
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const AArch64RegisterInfo *RegInfo = static_cast<const AArch64RegisterInfo *>(
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MF.getSubtarget().getRegisterInfo());
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const AArch64Subtarget &Subtarget = MF.getSubtarget<AArch64Subtarget>();
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const AArch64RegisterInfo *RegInfo = Subtarget.getRegisterInfo();
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const TargetInstrInfo *TII = Subtarget.getInstrInfo();
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DebugLoc DL;
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bool IsTailCallReturn = false;
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if (MBB.end() != MBBI) {
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