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Re-land "[PDB] Avoid calling discoverTypeIndices for a known record kind" 

Fixed bad usage of slice API causing assertion failures.

Reverts 810c8e9b49
Reinstates bd7ea8641e
This commit is contained in:
Reid Kleckner 2020-05-02 18:33:27 -07:00
parent 5070cecd72
commit 1e5793345b
1 changed files with 3 additions and 4 deletions
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7
lld/COFF/PDB.cpp
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@ -726,10 +726,9 @@ static void translateIdSymbols(MutableArrayRef<uint8_t> &recordData,
// in both cases we just need the second type index.
if (!ti->isSimple() && !ti->isNoneType()) {
CVType funcIdData = iDTable.getType(*ti);
SmallVector<TypeIndex, 2> indices;
discoverTypeIndices(funcIdData, indices);
assert(indices.size() == 2);
*ti = indices[1];
ArrayRef<uint8_t> tiBuf = funcIdData.data().slice(8, 4);
assert(tiBuf.size() == 4 && "corruct LF_[MEM]FUNC_ID record");
*ti = *reinterpret_cast<const TypeIndex *>(tiBuf.data());
}
kind = (kind == SymbolKind::S_GPROC32_ID) ? SymbolKind::S_GPROC32