Remove unnecessary getTarget call now that the subtarget is cached

on the machine function.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217070 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/LiveRangeEdit.h

@@ -116,7 +116,7 @@ public:
                 MachineFunction &MF, LiveIntervals &lis, VirtRegMap *vrm,
                 Delegate *delegate = nullptr)
       : Parent(parent), NewRegs(newRegs), MRI(MF.getRegInfo()), LIS(lis),
-        VRM(vrm), TII(*MF.getTarget().getSubtargetImpl()->getInstrInfo()),
+        VRM(vrm), TII(*MF.getSubtarget().getInstrInfo()),
         TheDelegate(delegate), FirstNew(newRegs.size()),
         ScannedRemattable(false) {
     MRI.setDelegate(this);

lib/Target/AArch64/AArch64InstrInfo.cpp

@@ -2518,7 +2518,7 @@ void AArch64InstrInfo::genAlternativeCodeSequence(
   MachineBasicBlock &MBB = *Root.getParent();
   MachineRegisterInfo &MRI = MBB.getParent()->getRegInfo();
   MachineFunction &MF = *MBB.getParent();
-  const TargetInstrInfo *TII = MF.getTarget().getSubtargetImpl()->getInstrInfo();
+  const TargetInstrInfo *TII = MF.getSubtarget().getInstrInfo();
 
   MachineInstr *MUL;
   const TargetRegisterClass *RC;

lib/Target/X86/X86RegisterInfo.cpp

@@ -443,10 +443,8 @@ bool X86RegisterInfo::canRealignStack(const MachineFunction &MF) const {
 bool X86RegisterInfo::needsStackRealignment(const MachineFunction &MF) const {
   const MachineFrameInfo *MFI = MF.getFrameInfo();
   const Function *F = MF.getFunction();
-  unsigned StackAlign = MF.getTarget()
-                            .getSubtargetImpl()
-                            ->getFrameLowering()
-                            ->getStackAlignment();
+  unsigned StackAlign =
+    MF.getSubtarget().getFrameLowering()->getStackAlignment();
   bool requiresRealignment =
     ((MFI->getMaxAlignment() > StackAlign) ||
      F->getAttributes().hasAttribute(AttributeSet::FunctionIndex,