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Mix some minor misuse of MachineBasicBlock iterator.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145903 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2011-12-06 02:49:06 +00:00
parent d3743fc092
commit 89dae971b1
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/MachineSSAUpdater.cpp
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@ -81,7 +81,7 @@ unsigned LookForIdenticalPHI(MachineBasicBlock *BB,
if (BB->empty())
return 0;
MachineBasicBlock::iterator I = BB->front();
MachineBasicBlock::iterator I = BB->begin();
if (!I->isPHI())
return 0;
@ -182,7 +182,7 @@ unsigned MachineSSAUpdater::GetValueInMiddleOfBlock(MachineBasicBlock *BB) {
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 @@ public:
/// 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);