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Fix use after free in Thumb2SizeReduction (PR4707). A MachineInstr was used after erasure.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79189 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2009-08-16 11:56:42 +00:00
parent 80c76436fe
commit 9ae7d44d95
1 changed files with 4 additions and 1 deletions
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5
lib/Target/ARM/Thumb2SizeReduction.cpp
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@ -654,8 +654,11 @@ bool Thumb2SizeReduce::ReduceMBB(MachineBasicBlock &MBB) {
}
// Try to transform ro a 16-bit non-two-address instruction.
if (Entry.NarrowOpc1 && ReduceToNarrow(MBB, MI, Entry, LiveCPSR))
if (Entry.NarrowOpc1 && ReduceToNarrow(MBB, MI, Entry, LiveCPSR)) {
Modified = true;
MachineBasicBlock::iterator I = prior(NextMII);
MI = &*I;
}
}
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