Move check on too large inferred memories to immediately after canonicalization

[oharboe]

Description

Earlier failure is better. For #3645, the error would appear after 10 seconds instead of 15 minutes.

Also, can the code be simplified to query the Yosys directly instead going via the Python script to parse the .json file?

OpenROAD-flow-scripts/flow/scripts/synth.tcl

Lines 86 to 89 in 6edb3e7

	json -o $::env(RESULTS_DIR)/mem.json
	# Run report and check here so as to fail early if this synthesis run is doomed
	exec -- $::env(PYTHON_EXE) $::env(SCRIPTS_DIR)/mem_dump.py \
	--max-bits $::env(SYNTH_MEMORY_MAX_BITS) $::env(RESULTS_DIR)/mem.json

Suggested Solution

No response

Additional Context

No response