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* Initial lookahead for FPGA interchange.Keith Rothman2021-03-231-0/+5
| | | | | | | | | Currently the lookahead is disabled by default because of the time to compute and RAM usage. However it does appear to work reasonably well in testing. Further effort is required to lower RAM usage after initial computation, and explore trade-off for cheaper time to compute. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Add initial logic for handling dedicated interconnect situations.Keith Rothman2021-02-231-0/+11
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Change how package pin IO sites are selected.Keith Rothman2021-02-171-1/+1
| | | | | | | The first site type that matches is now selected, under the premise that the early site types are more general. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Continue fixes.Keith Rothman2021-02-171-0/+6
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Run "make clangformat".Keith Rothman2021-02-121-1/+1
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Add FPGA interchange XDC parser.Keith Rothman2021-02-121-2/+20
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Update APIs to conform to style guide.Keith Rothman2021-02-041-1/+1
| | | | | | | - Change non-Arch methods to snake_case - Adds some utility functions to for accessing bel_data. Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Update copywrite headers.Keith Rothman2021-02-041-1/+2
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Run "make clangformat".Keith Rothman2021-02-041-3/+1
| | | | Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
* Initial FPGA interchange (which is just a cut-down xilinx arch).Keith Rothman2021-02-041-0/+85
Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
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