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18e70a4d50
Previously this took a reference to a map and returned a bool to say whether it succeeded. We can return a StringMap instead, as all callers but 1 simply iterated the map if the bool was true, and passed in empty maps as the starting point. lldb's lit-cpuid did specifically check whether the call failed, but due to the way the x86 routines work this works out the same as checking if the returned map is empty.