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Use a worklist to prevent the iterator from becoming invalidated because of the 'removeSuccessor' call. Noticed in a Release+Asserts+Check buildbot.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143018 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2011-10-26 07:16:18 +00:00
parent 7c38de2e9f
commit de39d86f26
1 changed files with 4 additions and 3 deletions
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7
lib/Target/ARM/ARMISelLowering.cpp
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@ -5996,9 +5996,10 @@ EmitSjLjDispatchBlock(MachineInstr *MI, MachineBasicBlock *MBB) const {
// Remove the landing pad successor from the invoke block and replace it
// with the new dispatch block.
for (MachineBasicBlock::succ_iterator
SI = BB->succ_begin(), SE = BB->succ_end(); SI != SE; ++SI) {
MachineBasicBlock *SMBB = *SI;
SmallVector<MachineBasicBlock*, 4> Successors(BB->succ_begin(),
BB->succ_end());
while (!Successors.empty()) {
MachineBasicBlock *SMBB = Successors.pop_back_val();
if (SMBB->isLandingPad()) {
BB->removeSuccessor(SMBB);
MBBLPads.push_back(SMBB);