iLO-iTM · Logic optimization & tech mapping

Core capabilities

External synthesis adapter: Call external logic synthesis tools (Yosys/ABC) via adapter and obtain standardized LogicIR.
Netlist-level optimization: Further optimize LogicIR on iEDA side—constant propagation, redundancy removal, local restructuring.
Tech mapping preparation: Prepare optimized netlists for iMap tech mapping, reducing downstream search space.
D0 starting point: CMakeLists.txt is empty; earliest planning stage. Adapter-first—wire external toolchain first, then build in-house.
Agent-ready: Python API wraps external synthesis and iEDA-side optimization for one-shot synth-opt-netlist flow.

Agent calling patterns

logic = client.call("iLO.optimize",
    design_ref="snap_7f3a",
    tech="sky130"
)

# logic.optimized_netlist_ref   → str (optimized netlist snapshot)
# logic.logic_ir                → dict (standardized LogicIR)
# logic.optimization_stats      → dict (area/gate count/depth changes)

Input / output contract

Direction	Parameter	Type	Description
Input	`design_ref`	str	Design snapshot (RTL or unoptimized netlist)
Input	`tech`	str	Target process: sky130 \| nangate45 \| gf12lp, etc.
Input	`synth_tool`	str (optional)	External synth tool: yosys \| genus \| dc, default yosys
Output	`optimized_netlist_ref`	str	Optimized netlist snapshot reference
Output	`logic_ir`	dict	Standardized LogicIR: nodes, edges, attributes
Output	`optimization_stats`	dict	Optimization stats: original gates, optimized gates, depth change

Role in the flow

01 RTL

Verilog/VHDL

02 Logic opt

iLO · iTM

Pre-synthesis optimization & tech mapping

03 Tech mapping

iMap

Target library binding

04 Physical design

iFP · iPL · iCTS · iRT

Full place & route flow

iLO-iTM sits after RTL and before tech mapping—the upstream-most tool in the RTL→GDS flow. Works with iMap to complete the HDL-to-gate-netlist conversion chain.

iMap — Tech mapping: iLO output feeds directly into iMap for library binding.
iNO — Netlist optimization: Finer-grained netlist-level optimization.
EDA tools overview: Map of all 22 point tools.

iLO-iTM · Logic optimization & tech mapping

# Core capabilities

# Agent calling patterns

# Input / output contract

# Role in the flow