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There is only one instance of this placeholder being created. Just use that

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instead of a vector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137099 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling
2011-08-09 01:17:10 +00:00
parent 4fa93b7ce1
commit 8d676c2199
1 changed files with 6 additions and 6 deletions
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12
lib/Transforms/Utils/LowerInvoke.cpp
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@ -406,7 +406,7 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
SmallVector<ReturnInst*,16> Returns; SmallVector<ReturnInst*,16> Returns;
SmallVector<UnwindInst*,16> Unwinds; SmallVector<UnwindInst*,16> Unwinds;
SmallVector<InvokeInst*,16> Invokes; SmallVector<InvokeInst*,16> Invokes;
SmallVector<UnreachableInst*, 16> Unreachables; UnreachableInst* UnreachablePlaceholder = 0;
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB) for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) { if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) {
@ -490,7 +490,7 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
// for a standard call). We insert an unreachable instruction here and // for a standard call). We insert an unreachable instruction here and
// modify the block to jump to the correct unwinding pad later. // modify the block to jump to the correct unwinding pad later.
BasicBlock *UnwindBB = BasicBlock::Create(F.getContext(), "unwindbb", &F); BasicBlock *UnwindBB = BasicBlock::Create(F.getContext(), "unwindbb", &F);
Unreachables.push_back(new UnreachableInst(F.getContext(), UnwindBB)); UnreachablePlaceholder = new UnreachableInst(F.getContext(), UnwindBB);
Value *CatchLoad = new LoadInst(InvokeNum, "invoke.num", true, CatchBB); Value *CatchLoad = new LoadInst(InvokeNum, "invoke.num", true, CatchBB);
SwitchInst *CatchSwitch = SwitchInst *CatchSwitch =
@ -579,10 +579,10 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
Unwinds[i]->eraseFromParent(); Unwinds[i]->eraseFromParent();
} }
// Replace all inserted unreachables with a branch to the unwind handler. // Replace the inserted unreachable with a branch to the unwind handler.
for (unsigned i = 0, e = Unreachables.size(); i != e; ++i) { if (UnreachablePlaceholder) {
BranchInst::Create(UnwindHandler, Unreachables[i]); BranchInst::Create(UnwindHandler, UnreachablePlaceholder);
Unreachables[i]->eraseFromParent(); UnreachablePlaceholder->eraseFromParent();
} }
// Finally, for any returns from this function, if this function contains an // Finally, for any returns from this function, if this function contains an