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UseListOrder: Correctly count the number of uses
This is an off-by-one bug I found by inspection, which would only trigger if the bitcode writer sees more uses of a `Value` than the reader. Since this is only relevant when an instruction gets upgraded somehow, there unfortunately isn't a reasonable way to add test coverage. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215804 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1697,9 +1697,9 @@ std::error_code BitcodeReader::ParseUseLists() {
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unsigned NumUses = 0;
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SmallDenseMap<const Use *, unsigned, 16> Order;
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for (const Use &U : V->uses()) {
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if (NumUses > Record.size())
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if (++NumUses > Record.size())
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break;
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Order[&U] = Record[NumUses++];
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Order[&U] = Record[NumUses - 1];
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}
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if (Order.size() != Record.size() || NumUses > Record.size())
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// Mismatches can happen if the functions are being materialized lazily
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