As far as I can tell, the instruction flags set in the various
RISCVInstrInfo*.td files are always under-approximations. That is,
something like isTerminator will only be set for opcodes that are
The exception seems to be isCall; this is set for JAL/JALR while these
instruction are not always calls. This patch proposes to remove isCall
from JAL/JALR for consistency.
A follow-up patch will add more detailed analysis of some instruction
properties based on MCInstrAnalysis.