Mix some minor misuse of MachineBasicBlock iterator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145903 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineSSAUpdater.cpp b/lib/CodeGen/MachineSSAUpdater.cpp
index 84d6df2..8cb6112 100644
--- a/lib/CodeGen/MachineSSAUpdater.cpp
+++ b/lib/CodeGen/MachineSSAUpdater.cpp
@@ -81,7 +81,7 @@
if (BB->empty())
return 0;
- MachineBasicBlock::iterator I = BB->front();
+ MachineBasicBlock::iterator I = BB->begin();
if (!I->isPHI())
return 0;
@@ -182,7 +182,7 @@
return DupPHI;
// Otherwise, we do need a PHI: insert one now.
- MachineBasicBlock::iterator Loc = BB->empty() ? BB->end() : BB->front();
+ MachineBasicBlock::iterator Loc = BB->empty() ? BB->end() : BB->begin();
MachineInstr *InsertedPHI = InsertNewDef(TargetOpcode::PHI, BB,
Loc, VRC, MRI, TII);
@@ -311,7 +311,7 @@
/// Add it into the specified block and return the register.
static unsigned CreateEmptyPHI(MachineBasicBlock *BB, unsigned NumPreds,
MachineSSAUpdater *Updater) {
- MachineBasicBlock::iterator Loc = BB->empty() ? BB->end() : BB->front();
+ MachineBasicBlock::iterator Loc = BB->empty() ? BB->end() : BB->begin();
MachineInstr *PHI = InsertNewDef(TargetOpcode::PHI, BB, Loc,
Updater->VRC, Updater->MRI,
Updater->TII);