SH4 CC status: working some on "long long" arithmetic; notes register space doesn't go very far; mostly doing ops load+op+store...
The latter basically amounts to a "builtin inline function". Either trivially allows the GP register allocation to do the work.
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ok; I am doing a lot of this stuff in the machine-code emitter stage; so the AST and 3AC code sees LongLong/Int128/... as fundamental types.
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for many of the LongLong arith ops, I treat it like it were a function call, mostly so it can use all the scratch registers as working space
End of conversation
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