auto-sync BitCastStdArray.py: Transform to union instead
#2257
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This pr transforms
bit_cast<std::array<...>>(...)into aunioninstead because as per #2237 the current transform violates C strict aliasing rules thus causing optimization issues.git grep 'bit_cast.*<.*array'in llvm-capstone'sllvm/lib/Targetsubtree was used to find transform targets.