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Use external df iterators to avoid revisiting blocks in functions with
multiple setjmp calls. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9093 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -137,7 +137,9 @@ bool LowerSetJmp::run(Module& M)
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for (Value::use_iterator B = SetJmp->use_begin(), E = SetJmp->use_end();
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B != E; ++B) {
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BasicBlock* BB = cast<Instruction>(*B)->getParent();
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DFSBlocks.insert(df_begin(BB), df_end(BB));
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for (df_ext_iterator<BasicBlock*> I = df_ext_begin(BB, BBSet),
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E = df_ext_end(BB, BBSet); I != E; ++I)
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/* empty */;
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}
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while (!SetJmp->use_empty()) {
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