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There is only one instance of this placeholder being created. Just use that
instead of a vector. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137099 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -406,7 +406,7 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
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SmallVector<ReturnInst*,16> Returns;
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SmallVector<ReturnInst*,16> Returns;
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SmallVector<UnwindInst*,16> Unwinds;
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SmallVector<UnwindInst*,16> Unwinds;
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SmallVector<InvokeInst*,16> Invokes;
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SmallVector<InvokeInst*,16> Invokes;
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SmallVector<UnreachableInst*, 16> Unreachables;
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UnreachableInst* UnreachablePlaceholder = 0;
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for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
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for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
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if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) {
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if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) {
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@ -490,7 +490,7 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
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// for a standard call). We insert an unreachable instruction here and
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// for a standard call). We insert an unreachable instruction here and
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// modify the block to jump to the correct unwinding pad later.
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// modify the block to jump to the correct unwinding pad later.
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BasicBlock *UnwindBB = BasicBlock::Create(F.getContext(), "unwindbb", &F);
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BasicBlock *UnwindBB = BasicBlock::Create(F.getContext(), "unwindbb", &F);
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Unreachables.push_back(new UnreachableInst(F.getContext(), UnwindBB));
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UnreachablePlaceholder = new UnreachableInst(F.getContext(), UnwindBB);
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Value *CatchLoad = new LoadInst(InvokeNum, "invoke.num", true, CatchBB);
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Value *CatchLoad = new LoadInst(InvokeNum, "invoke.num", true, CatchBB);
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SwitchInst *CatchSwitch =
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SwitchInst *CatchSwitch =
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@ -579,10 +579,10 @@ bool LowerInvoke::insertExpensiveEHSupport(Function &F) {
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Unwinds[i]->eraseFromParent();
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Unwinds[i]->eraseFromParent();
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}
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}
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// Replace all inserted unreachables with a branch to the unwind handler.
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// Replace the inserted unreachable with a branch to the unwind handler.
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for (unsigned i = 0, e = Unreachables.size(); i != e; ++i) {
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if (UnreachablePlaceholder) {
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BranchInst::Create(UnwindHandler, Unreachables[i]);
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BranchInst::Create(UnwindHandler, UnreachablePlaceholder);
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Unreachables[i]->eraseFromParent();
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UnreachablePlaceholder->eraseFromParent();
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}
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}
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// Finally, for any returns from this function, if this function contains an
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// Finally, for any returns from this function, if this function contains an
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