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fix accidentally inverted conditional and add comment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79312 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-08-18 04:33:15 +00:00
parent a006d4e60d
commit b49a30c109
1 changed files with 4 additions and 1 deletions
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5
lib/CodeGen/MachineBasicBlock.cpp
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@ -128,6 +128,9 @@ MachineBasicBlock::iterator MachineBasicBlock::getFirstTerminator() {
return I;
}
/// isOnlyReachableViaFallthough - Return true if this basic block has
/// exactly one predecessor and the control transfer mechanism between
/// the predecessor and this block is a fall-through.
bool MachineBasicBlock::isOnlyReachableByFallthrough() const {
// If this is a landing pad, it isn't a fall through. If it has no preds,
// then nothing falls through to it.
@ -152,7 +155,7 @@ bool MachineBasicBlock::isOnlyReachableByFallthrough() const {
// Otherwise, check the last instruction.
const MachineInstr &LastInst = Pred->back();
return LastInst.getDesc().isBarrier();
return !LastInst.getDesc().isBarrier();
}
void MachineBasicBlock::dump() const {