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Handle the case of a no-return invoke correctly. It actually still has

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successors, they just are all landing pad successors. We handle this the
same way as no successors. Comments attached for the next person to wade
through here and another lovely test case courtesy of Benjamin Kramer's
bugpoint reduction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145098 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2011-11-23 08:23:54 +00:00
parent 23d66a58b7
commit 521fc5bcd7
2 changed files with 32 additions and 0 deletions
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8
lib/CodeGen/MachineBasicBlock.cpp
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@ -305,6 +305,14 @@ void MachineBasicBlock::updateTerminator() {
assert(!TBB && "Found more than one non-landing-pad successor!");
TBB = *SI;
}
// If there is no non-landing-pad successor, the block has no
// fall-through edges to be concerned with.
if (!TBB)
return;
// Finally update the unconditional successor to be reached via a branch
// if it would not be reached by fallthrough.
if (!isLayoutSuccessor(TBB))
TII->InsertBranch(*this, TBB, 0, Cond, dl);
}