I am working on a port to an architecture with some strict rules. The
restriction that I am unable to figure out how to enforce is a base register
that is allowed in the destination operand, but not in a source operand.
For example, this would be allowed "add 4($1), $8, $9", but this would not
be allowed "add $8, 4($1), $9" because $1 can only be used a base register
for the destination operand. Is there any way to get that kind of
information in GO_IF_LEGITIMATE_ADDRESS or can you think of some other way
to handle this? Anyone know of a port with something similar that I could
look at? Thanks.
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