Orc rt updates #154693
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Orc rt updates #154693
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The initial operations, isPowerOf2 and nextPowerOf2 will be used in an upcoming patch to add support for bitmask-enums.
ORC_RT_MARK_AS_BITMASK_ENUM and ORC_RT_DECLARE_ENUM_AS_BITMASK can be used to easily add support for bitmask operators (&, |, ^, ~) to enum types. This code was derived from LLVM's include/llvm/ADT/BitmaskEnum.h header.
The orc-rt extensible RTTI mechanism is used to provide simple dynamic RTTI checks for orc-rt types that do not depend on standard C++ RTTI (meaning that they will work equally well for programs compiled with -fno-rtti).
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