first, sorta-working ARM64 version

libIRDB/include/core/decode_base.hpp

libIRDB/include/core/decode_csarm.hpp

libIRDB/include/core/decode_dispatch.hpp

libIRDB/include/core/fileir.hpp

libIRDB/include/core/operand_csarm.hpp

libIRDB/include/core/operand_dispatch.hpp

libIRDB/src/core/SConscript

libIRDB/src/core/decode_base.cpp

libIRDB/src/core/decode_csarm.cpp

libIRDB/src/core/decode_dispatch.cpp

libIRDB/src/core/operand_csarm.cpp

libIRDB/src/core/operand_dispatch.cpp

libehp

xform/rewriter.cpp