Ensure bitcode encoding of instructions and their operands stays stable.
This includes instructions with aggregate operands (insert/extract), instructions with vector operands (insert/extract/shuffle), binary arithmetic and bitwise instructions, conversion instructions and terminators.

Work was done by lama.saba@intel.com.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202262 91177308-0d34-0410-b5e6-96231b3b80d8