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* xilinx: Initial support for LUT4 devices.Marcin Koƛcielnicki2020-02-071-11/+42
| | | | | | | Adds support for mapping logic, including LUTs, wide LUTs, and carry chains. Fixes #1547
* Fix $lcu -> MUXCY mapping, credit @mwkmwkmwkEddie Hung2020-02-061-4/+5
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* Fix/cleanup +/xilinx/arith_map.vEddie Hung2020-02-061-111/+44
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* Deprecate `_CLB_CARRY from +/xilinx/arith_map.v since #1623Eddie Hung2020-01-171-117/+82
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* +/xilinx/arith_map.v fix $lcu ruleEddie Hung2020-01-171-6/+6
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* Instead of MUXCY/XORCY use CARRY4 (with timing)Eddie Hung2019-05-211-2/+2
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* Changes required for VPR place and route synth_xilinx.Keith Rothman2019-03-011-7/+275
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Fixed trailing whitespacesClifford Wolf2015-07-021-2/+2
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* Various cleanups in xilinx techlibClifford Wolf2015-01-181-0/+91