APInt TableInt(TableSize * IT->getBitWidth(), 0);
for (uint64_t I = TableSize; I > 0; --I) {
TableInt <<= IT->getBitWidth();
- ConstantInt *Val = cast<ConstantInt>(TableContents[I - 1]);
- TableInt |= Val->getValue().zext(TableInt.getBitWidth());
+ // Insert values into the bitmap. Undef values are set to zero.
+ if (!isa<UndefValue>(TableContents[I - 1])) {
+ ConstantInt *Val = cast<ConstantInt>(TableContents[I - 1]);
+ TableInt |= Val->getValue().zext(TableInt.getBitWidth());
+ }
}
BitMap = ConstantInt::get(M.getContext(), TableInt);
BitMapElementTy = IT;