Convert ICE40 to BLIF #8031
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Convert ICE40 to BLIF #8031
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The ICE40 dialect is a synthesis target representing the Lattice ICE40 family of fpgas.
The BLIF dialect implements the extended berkely logic interchange format. This is a format used by some OSS tools, such as some place-and-route tools. This is the format used by yosys to interchange with nextpnr.
Match output to yosys and input to nextpnr. Incomplete.
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Builds on #8018 and #8019 to get closer to end-to-end synthesis. .gate directives in blif are incomplete and can't handle the parameters yet.