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https://github.com/YosysHQ/yosys
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643427d9c9
This commit introduces the negopt pass with pre/post optimization modes for handling negation patterns in arithmetic circuits. Pre-optimization patterns (expose for tree balancing): - manual2sub: (a + ~b) + 1 → a - b - sub2neg: a - b → a + (-b) - negexpand: -(a + b) → (-a) + (-b) [with output width fix] - negneg: -(-a) → a - negmux: -(s ? a : b) → s ? (-a) : (-b) Post-optimization patterns (cleanup/rebuild): - negrebuild: (-a) + (-b) → -(a + b) - muxneg: s ? (-a) : (-b) → -(s ? a : b) - neg2sub: a + (-b) → a - b All patterns use nusers() for fanout checking (standard Yosys style). Comprehensive test coverage with positive/negative cases and formal verification via equiv_opt.
52 lines
2.2 KiB
Makefile
52 lines
2.2 KiB
Makefile
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OBJS += passes/silimate/activity.o
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OBJS += passes/silimate/annotate_cell_fanout.o
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OBJS += passes/silimate/breakreduce.o
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OBJS += passes/silimate/breaksop.o
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OBJS += passes/silimate/bus_rebuild.o
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OBJS += passes/silimate/fanoutbuf.o
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OBJS += passes/silimate/l2j_frontend.o
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OBJS += passes/silimate/obs_clean.o
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OBJS += passes/silimate/segv.o
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OBJS += passes/silimate/reg_rename.o
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OBJS += passes/silimate/splitfanout.o
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OBJS += passes/silimate/splitlarge.o
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OBJS += passes/silimate/splitnetlist.o
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OBJS += passes/silimate/opt_expand.o
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GENFILES += passes/silimate/peepopt_expand.h
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passes/silimate/opt_expand.o: passes/silimate/peepopt_expand.h
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$(eval $(call add_extra_objs,passes/silimate/peepopt_expand.h))
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PEEPOPT_PATTERN = passes/silimate/peepopt_expand.pmg
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passes/silimate/peepopt_expand.h: passes/pmgen/pmgen.py $(PEEPOPT_PATTERN)
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$(P) mkdir -p $(dir $@) && $(PYTHON_EXECUTABLE) $< -o $@ -p peepopt $(filter-out $<,$^)
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OBJS += passes/silimate/muxmode.o
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GENFILES += passes/silimate/peepopt_muxmode.h
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passes/silimate/muxmode.o: passes/silimate/peepopt_muxmode.h
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$(eval $(call add_extra_objs,passes/silimate/peepopt_muxmode.h))
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PEEPOPT_PATTERN = passes/silimate/peepopt_muxmode.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_muxinvprop.pmg
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passes/silimate/peepopt_muxmode.h: passes/pmgen/pmgen.py $(PEEPOPT_PATTERN)
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$(P) mkdir -p $(dir $@) && $(PYTHON_EXECUTABLE) $< -o $@ -p peepopt $(filter-out $<,$^)
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OBJS += passes/silimate/negopt.o
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GENFILES += passes/silimate/peepopt_negopt.h
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passes/silimate/negopt.o: passes/silimate/peepopt_negopt.h
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$(eval $(call add_extra_objs,passes/silimate/peepopt_negopt.h))
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PEEPOPT_PATTERN = passes/silimate/peepopt_manual2sub.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_sub2neg.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_negexpand.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_negneg.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_negmux.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_negrebuild.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_muxneg.pmg
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PEEPOPT_PATTERN += passes/silimate/peepopt_neg2sub.pmg
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passes/silimate/peepopt_negopt.h: passes/pmgen/pmgen.py $(PEEPOPT_PATTERN)
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$(P) mkdir -p $(dir $@) && $(PYTHON_EXECUTABLE) $< -o $@ -p peepopt $(filter-out $<,$^)
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