diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp index b5103750f77..ef28c958859 100644 --- a/lib/CodeGen/BranchFolding.cpp +++ b/lib/CodeGen/BranchFolding.cpp @@ -20,6 +20,7 @@ #include "llvm/CodeGen/MachineFunctionPass.h" #include "llvm/Target/TargetInstrInfo.h" #include "llvm/Target/TargetMachine.h" +#include "Support/STLExtras.h" using namespace llvm; namespace { @@ -113,7 +114,7 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB, // explicitly. if (MBB->empty()) { if (MBB->pred_empty()) return false; - MachineFunction::iterator FallThrough = MBB; ++FallThrough; + MachineFunction::iterator FallThrough = next(MBB); assert(FallThrough != MBB->getParent()->end() && "Fell off the end of the function!"); while (!MBB->pred_empty()) { @@ -138,7 +139,7 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB, // If MBB does not end with a barrier, add a goto instruction to the end. if (Pred->empty() || !TII.isBarrier(Pred->back().getOpcode())) - TII.insertGoto(*Pred, *++MachineFunction::iterator(MBB)); + TII.insertGoto(*Pred, *next(MBB)); // Update the CFG now. Pred->removeSuccessor(Pred->succ_begin()); @@ -170,7 +171,7 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB, if (isUncondBranch(--MBB->end(), TII)) { MachineBasicBlock::iterator MI = --MBB->end(); MachineInstr *UncondBr = MI; - MachineFunction::iterator FallThrough = MBB; ++FallThrough; + MachineFunction::iterator FallThrough = next(MBB); MachineFunction::iterator UncondDest = MI->getOperand(0).getMachineBasicBlock(); @@ -187,7 +188,8 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB, // We assume that conditional branches always have the branch dest as the // last operand. This could be generalized in the future if needed. unsigned LastOpnd = MI->getNumOperands()-1; - if (MI->getOperand(LastOpnd).getMachineBasicBlock() == &*FallThrough) { + if (MachineFunction::iterator( + MI->getOperand(LastOpnd).getMachineBasicBlock()) == FallThrough) { // Change the cond branch to go to the uncond dest, nuke the uncond, // then reverse the condition. MI->getOperand(LastOpnd).setMachineBasicBlock(UncondDest);