From a1a9f408dadefb157d1204f72200936f013521fd Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Tue, 5 Jun 2007 22:03:53 +0000 Subject: [PATCH] ReplaceUsesOfBlockWith() can modify the predecessors list. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37441 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/IfConversion.cpp | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/lib/CodeGen/IfConversion.cpp b/lib/CodeGen/IfConversion.cpp index 9a35d1d11e9..e06fb268358 100644 --- a/lib/CodeGen/IfConversion.cpp +++ b/lib/CodeGen/IfConversion.cpp @@ -756,9 +756,10 @@ void IfConverter::MergeBlocks(BBInfo &ToBBI, BBInfo &FromBBI) { ToBBI.BB->removeSuccessor(FromBBI.BB); // Redirect all branches to FromBB to ToBB. - for (MachineBasicBlock::pred_iterator I = FromBBI.BB->pred_begin(), - E = FromBBI.BB->pred_end(); I != E; ++I) - (*I)->ReplaceUsesOfBlockWith(FromBBI.BB, ToBBI.BB); + std::vector Preds(FromBBI.BB->pred_begin(), + FromBBI.BB->pred_end()); + for (unsigned i = 0, e = Preds.size(); i != e; ++i) + Preds[i]->ReplaceUsesOfBlockWith(FromBBI.BB, ToBBI.BB); // Transfer preds / succs and update size. TransferPreds(ToBBI.BB, FromBBI.BB);