@oe1cxw If I wanted to use Yosys to replace XST's LUT_MAP (no longer in Vivado), would you recommend using eval -table or tech mapping?
Shouldn't the KEEP_HIERARCHY and/or DONT_TOUCH attributes on the module itself effectively do the same thing in Vivado?
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Hmm, DONT_TOUCH looks like it would do the trick since the manual says it's forwarded to place-and-route.
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