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Update comment for r149070.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149075 91177308-0d34-0410-b5e6-96231b3b80d8
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Chad Rosier 2012-01-26 20:19:05 +00:00
parent 0162ff421d
commit 6a5d0e2a98
1 changed files with 1 additions and 3 deletions
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lib/CodeGen/MachineBasicBlock.cpp
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@ -537,9 +537,7 @@ bool MachineBasicBlock::canFallThrough() {
// If the block doesn't end in a known control barrier, assume fallthrough
// is possible. The isPredicated check is needed because this code can be
// called during IfConversion, where an instruction which is normally a
// Barrier is predicated and thus no longer an actual control barrier. This
// is over-conservative though, because if an instruction isn't actually
// predicated we could still treat it like a barrier.
// Barrier is predicated and thus no longer an actual control barrier.
return empty() || !back().isBarrier() || TII->isPredicated(&back());
}