CodeGen: Minor cleanups to use MachineInstr::getMF. NFC

Since r315388 we have a shorter way to say this, so we'll replace
MI->getParent()->getParent() with MI->getMF() in a few places.

llvm-svn: 315390

1 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index fadade2..ec2b097 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -311,7 +311,7 @@ bool MachineOperand::isIdenticalTo(const MachineOperand &Other) const {
       return true;
 
     // Calculate the size of the RegMask
-    const MachineFunction *MF = getParent()->getParent()->getParent();
+    const MachineFunction *MF = getParent()->getMF();
     const TargetRegisterInfo *TRI = MF->getSubtarget().getRegisterInfo();
     unsigned RegMaskSize = (TRI->getNumRegs() + 31) / 32;
 
@@ -1055,7 +1055,7 @@ MachineInstr::mergeMemRefsWith(const MachineInstr& Other) {
   if (CombinedNumMemRefs != uint8_t(CombinedNumMemRefs))
     return std::make_pair(nullptr, 0);
 
-  MachineFunction *MF = getParent()->getParent();
+  MachineFunction *MF = getMF();
   mmo_iterator MemBegin = MF->allocateMemRefsArray(CombinedNumMemRefs);
   mmo_iterator MemEnd = std::copy(memoperands_begin(), memoperands_end(),
                                   MemBegin);
@@ -1307,8 +1307,8 @@ MachineInstr::getRegClassConstraint(unsigned OpIdx,
                                     const TargetInstrInfo *TII,
                                     const TargetRegisterInfo *TRI) const {
   assert(getParent() && "Can't have an MBB reference here!");
-  assert(getParent()->getParent() && "Can't have an MF reference here!");
-  const MachineFunction &MF = *getParent()->getParent();
+  assert(getMF() && "Can't have an MF reference here!");
+  const MachineFunction &MF = *getMF();
 
   // Most opcodes have fixed constraints in their MCInstrDesc.
   if (!isInlineAsm())
@@ -1669,7 +1669,7 @@ bool MachineInstr::isSafeToMove(AliasAnalysis *AA, bool &SawStore) const {
 
 bool MachineInstr::mayAlias(AliasAnalysis *AA, MachineInstr &Other,
                             bool UseTBAA) {
-  const MachineFunction *MF = getParent()->getParent();
+  const MachineFunction *MF = getMF();
   const TargetInstrInfo *TII = MF->getSubtarget().getInstrInfo();
   const MachineFrameInfo &MFI = MF->getFrameInfo();