Fixed/improved opt_const $eq/$ne/$eqx/$nex handling
Fixed/improved opt_const $eq/$ne/$eqx/$nex handling

SymbiFlow/yosys,YosysHQ/yosys,SymbiFlow/yosys,cliffordwolf/yosys,swallat/yosys,SymbiFlow/yosys,azonenberg/yosys,cliffordwolf/yosys,swallat/yosys,SymbiFlow/yosys,swallat/yosys,antmicro/yosys,antmicro/yosys,antmicro/yosys,azonenberg/yosys,cliffordwolf/yosys,YosysHQ/yosys,SymbiFlow/yosys,YosysHQ/yosys,antmicro/yosys,swallat/yosys,YosysHQ/yosys,YosysHQ/yosys,cliffordwolf/yosys,SymbiFlow/yosys,antmicro/yosys,swallat/yosys,cliffordwolf/yosys,azonenberg/yosys,azonenberg/yosys,cliffordwolf/yosys,swallat/yosys,antmicro/yosys,azonenberg/yosys,swallat/yosys,SymbiFlow/yosys,antmicro/yosys,cliffordwolf/yosys,cliffordwolf/yosys,YosysHQ/yosys,YosysHQ/yosys,SymbiFlow/yosys,swallat/yosys,cliffordwolf/yosys,swallat/yosys,azonenberg/yosys,azonenberg/yosys,YosysHQ/yosys,azonenberg/yosys,antmicro/yosys,azonenberg/yosys