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simplify this code a bit.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60164 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2008-11-27 07:54:38 +00:00
parent 3c4f8b91ef
commit 5a5c9a5acd
1 changed files with 4 additions and 4 deletions
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8
lib/Transforms/Utils/SimplifyCFG.cpp
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@ -1709,9 +1709,9 @@ bool llvm::SimplifyCFG(BasicBlock *BB) {
assert(&BB->getParent()->getEntryBlock() != BB &&
"Can't Simplify entry block!");
// Remove basic blocks that have no predecessors... which are unreachable.
if ((pred_begin(BB) == pred_end(BB)) ||
(*pred_begin(BB) == BB && ++pred_begin(BB) == pred_end(BB))) {
// Remove basic blocks that have no predecessors... or that just have themself
// as a predecessor. These are unreachable.
if (pred_begin(BB) == pred_end(BB) || BB->getSinglePredecessor() == BB) {
DOUT << "Removing BB: \n" << *BB;
// Loop through all of our successors and make sure they know that one
@ -1733,7 +1733,7 @@ bool llvm::SimplifyCFG(BasicBlock *BB) {
// Remove the instruction from the basic block
BB->getInstList().pop_back();
}
M->getBasicBlockList().erase(BB);
BB->eraseFromParent();
return true;
}