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, 2 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/RegisterScavenging.cpp b/llvm/lib/CodeGen/RegisterScavenging.cpp
index fdd10edf07f..844ddb9ed3f 100644
--- a/llvm/lib/CodeGen/RegisterScavenging.cpp
+++ b/llvm/lib/CodeGen/RegisterScavenging.cpp
@@ -463,7 +463,7 @@ RegScavenger::spill(unsigned Reg, const TargetRegisterClass &RC, int SPAdj,
                     MachineBasicBlock::iterator &UseMI) {
   // Find an available scavenging slot with size and alignment matching
   // the requirements of the class RC.
-  const MachineFunction &MF = *Before->getParent()->getParent();
+  const MachineFunction &MF = *Before->getMF();
   const MachineFrameInfo &MFI = MF.getFrameInfo();
   unsigned NeedSize = TRI->getSpillSize(RC);
   unsigned NeedAlign = TRI->getSpillAlignment(RC);
@@ -536,7 +536,7 @@ unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC,
                                         MachineBasicBlock::iterator I,
                                         int SPAdj) {
   MachineInstr &MI = *I;
-  const MachineFunction &MF = *MI.getParent()->getParent();
+  const MachineFunction &MF = *MI.getMF();
   // Consider all allocatable registers in the register class initially
   BitVector Candidates = TRI->getAllocatableSet(MF, RC);