CodeGen: Use MachineInstr& in TargetLowering, NFC

This is a mechanical change to make TargetLowering API take MachineInstr&
(instead of MachineInstr*), since the argument is expected to be a valid
MachineInstr.  In one case, changed a parameter from MachineInstr* to
MachineBasicBlock::iterator, since it was used as an insertion point.

As a side effect, this removes a bunch of MachineInstr* to
MachineBasicBlock::iterator implicit conversions, a necessary step
toward fixing PR26753.

llvm-svn: 274287

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index a4db08ab534..909d5c78b8b 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -1172,9 +1172,10 @@ bool TargetLoweringBase::isLegalRC(const TargetRegisterClass *RC) const {
 
 /// Replace/modify any TargetFrameIndex operands with a targte-dependent
 /// sequence of memory operands that is recognized by PrologEpilogInserter.
-MachineBasicBlock*
-TargetLoweringBase::emitPatchPoint(MachineInstr *MI,
+MachineBasicBlock *
+TargetLoweringBase::emitPatchPoint(MachineInstr &InitialMI,
                                    MachineBasicBlock *MBB) const {
+  MachineInstr *MI = &InitialMI;
   MachineFunction &MF = *MI->getParent()->getParent();
   MachineFrameInfo &MFI = *MF.getFrameInfo();