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6 Commits

Author SHA1 Message Date
Miodrag Milanovic 477e43d921 Fix xilinx tests, when iopads are default 2019-12-21 13:18:44 +01:00
Marcin Kościelnicki a235250403 xilinx: Add xilinx_dffopt pass (#1557) 2019-12-18 13:43:43 +01:00
Marcin Kościelnicki aff6ad1ce0 xilinx: Improve flip-flop handling. 
This adds support for infering more kinds of flip-flops:

- FFs with async set/reset and clock enable
- FFs with sync set/reset
- FFs with sync set/reset and clock enable

Some passes have been moved (and some added) in order for dff2dffs to
work correctly.

This gives us complete coverage of Virtex 6+ and Spartan 6 flip-flop
capabilities (though not latch capabilities).  Older FPGAs also support
having both a set and a reset input, which will be handled at a later
data.
 2019-12-18 13:43:43 +01:00
Miodrag Milanovic 3e0ffe05a7 Fixed tests 2019-11-11 15:41:33 +01:00
Miodrag Milanovic 5603595e5c Share common tests 2019-10-18 12:19:59 +02:00
Miodrag Milanovic c2ec7ca703 Moved all tests in arch sub directory 2019-10-18 11:06:12 +02:00