File: ice40_wrapcarry.pmg

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pattern ice40_wrapcarry

match carry
	select carry->type.in(\SB_CARRY)
endmatch

match lut
	select lut->type.in(\SB_LUT4)
	index <SigSpec> port(lut, \I1) === port(carry, \I0)
	index <SigSpec> port(lut, \I2) === port(carry, \I1)
endmatch

code
	accept;
endcode