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Forgot to check for if iterator reached the end.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37420 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-06-04 20:33:36 +00:00
parent 111354ff99
commit 3ec425470f
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/IfConversion.cpp
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@ -441,8 +441,9 @@ bool IfConverter::AnalyzeBlocks(MachineFunction &MF,
/// isNextBlock - Returns true either if ToBB the next block after BB or
/// that all the intervening blocks are empty.
static bool isNextBlock(MachineBasicBlock *BB, MachineBasicBlock *ToBB) {
MachineFunction *MF = BB->getParent();
MachineFunction::iterator I = BB;
while (++I != MachineFunction::iterator(ToBB))
while (++I != MF->end() && I != MachineFunction::iterator(ToBB))
if (!I->empty())
return false;
return true;