CodeGen: Add MachineInstr::getMF(). NFC

Similarly to how Instruction has getFunction, this adds a less verbose
way to write MI->getParent()->getParent(). I'll follow up shortly with
a change that changes a bunch of the uses.

llvm-svn: 315388

1 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/MachineInstr.cpp b/llvm/lib/CodeGen/MachineInstr.cpp
index 66de99156b4..fadade26a89 100644
--- a/llvm/lib/CodeGen/MachineInstr.cpp
+++ b/llvm/lib/CodeGen/MachineInstr.cpp
@@ -1154,6 +1154,10 @@ bool MachineInstr::isIdenticalTo(const MachineInstr &Other,
   return true;
 }
 
+const MachineFunction *MachineInstr::getMF() const {
+  return getParent()->getParent();
+}
+
 MachineInstr *MachineInstr::removeFromParent() {
   assert(getParent() && "Not embedded in a basic block!");
   return getParent()->remove(this);