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288a857e47
The "smart" PLP handler tries to recover the flags from an earlier PHP. The non-smart version just marks all the flags as indeterminate. This doesn't work well on the 65816 in native mode, because having the M/X flags in an indeterminate state is rarely what you want. Code rarely uses PLP to reset the flags to a specific state, preferring explicit SEP/REP. The analyzer is more likely to get the correct answer by simply leaving the flags in their prior state. A test case has been added to 20052-branches-and-banks, which now has "smart PLP" disabled.