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6447 Commits

Author SHA1 Message Date
Marcin Kościelnicki 49765ec19e minor review fixes 2019-08-13 18:05:49 +00:00
Marcin Kościelnicki c6d5b97b98 review fixes 2019-08-13 00:35:54 +00:00
Marcin Kościelnicki f4c62f33ac Add clock buffer insertion pass, improve iopadmap. 
A few new attributes are defined for use in cell libraries:

- iopad_external_pin: marks PAD cell's external-facing pin.  Pad
  insertion will be skipped for ports that are already connected
  to such a pin.
- clkbuf_sink: marks an input pin as a clock pin, requesting clock
  buffer insertion.
- clkbuf_driver: marks an output pin as a clock buffer output pin.
  Clock buffer insertion will be skipped for nets that are already
  driven by such a pin.

All three are module attributes that should be set to a comma-separeted
list of pin names.

Clock buffer insertion itself works as follows:

1. All cell ports, starting from bottom up, can be marked as clock sinks
   (requesting clock buffer insertion) or as clock buffer outputs.
2. If a wire in a given module is driven by a cell port that is a clock
   buffer output, it is in turn also considered a clock buffer output.
3. If an input port in a non-top module is connected to a clock sink in a
   contained cell, it is also in turn considered a clock sink.
4. If a wire in a module is driven by a non-clock-buffer cell, and is
   also connected to a clock sink port in a contained cell, a clock
   buffer is inserted in this module.
5. For the top module, a clock buffer is also inserted on input ports
   connected to clock sinks, optionally with a special kind of input
   PAD (such as IBUFG for Xilinx).
6. Clock buffer insertion on a given wire is skipped if the clkbuf_inhibit
   attribute is set on it.
 2019-08-13 00:16:38 +02:00
Serge Bazanski 78b30bbb11
Merge pull request #1152 from 1138-4EB/feat-docker 
Dockerfile
 2019-08-12 15:09:25 +02:00
Eddie Hung ba1a428f55
Merge pull request #1277 from YosysHQ/eddie/fix_1262 
opt_expr -fine to now trim LSBs of $alu cells too
 2019-08-11 22:10:17 -07:00
Eddie Hung 88d5185596 Merge remote-tracking branch 'origin/master' into eddie/fix_1262 2019-08-11 21:13:40 -07:00
Eddie Hung c851dc1310
Merge pull request #1280 from YosysHQ/revert-1266-eddie/ice40_full_adder 
Revert "Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER"
 2019-08-10 14:18:16 -07:00
Eddie Hung 282cc77604 Wrong way around 2019-08-10 11:55:00 -07:00
David Shah f9020ce2b3
Revert "Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER" 2019-08-10 17:14:48 +01:00
Eddie Hung 02b0d328ad cover_list -> cover as per @cliffordwolf 2019-08-10 08:26:41 -07:00
Clifford Wolf f54bf1631f
Merge pull request #1258 from YosysHQ/eddie/cleanup 
Cleanup a few barnacles across codebase
 2019-08-10 09:52:14 +02:00
Clifford Wolf 4f81213165
Merge pull request #1261 from YosysHQ/clifford/verific_init 
Automatically prune init attributes in verific front-end
 2019-08-10 09:47:25 +02:00
Clifford Wolf 05c46a31dc
Merge pull request #1263 from ucb-bar/firrtl_err_on_unsupported_cell 
FIRRTL error on unsupported cell
 2019-08-10 09:47:10 +02:00
Clifford Wolf a469d1a64a
Merge pull request #1270 from YosysHQ/eddie/alu_lcu_doc 
Add a few comments to document $alu and $lcu
 2019-08-10 09:46:46 +02:00
Clifford Wolf 465a59319a
Merge pull request #1272 from mmicko/travis_fix 
Propagate parameters for Travis build
 2019-08-10 09:45:26 +02:00
Clifford Wolf b1e817e616
Merge pull request #1274 from YosysHQ/eddie/fix_1271 
Add __STDC_FORMAT_MACROS before <inttypes.h> as per @mithro
 2019-08-10 09:45:06 +02:00
Clifford Wolf dad9514d86
Merge pull request #1276 from YosysHQ/clifford/fix1273 
Disable NMUX, AOI3, OAI3, AOI4, OAI4 in ABC default gate lib
 2019-08-10 09:38:22 +02:00
Eddie Hung 849e0eeab4 Grammar 2019-08-09 12:43:21 -07:00
Eddie Hung 041defc5a6 Reformat so it shows up/looks nice when "help $alu" and "help $alu+" 2019-08-09 12:33:39 -07:00
Eddie Hung 31f6d74552 Separate $alu handling 2019-08-09 12:13:32 -07:00
Eddie Hung 0adf81cb91 Add $alu tests 2019-08-09 12:13:17 -07:00
Eddie Hung 9f1b82f594 opt_expr -fine to trim LSBs of $alu too 2019-08-09 10:32:12 -07:00
Eddie Hung 8350dfb809 Add alumacc versions of opt_expr tests 2019-08-09 10:30:53 -07:00
Eddie Hung 9300111601 Add new $alu test, remove wreduce 2019-08-09 10:22:06 -07:00
Clifford Wolf 6d0be8d206 Disable NMUX, AOI3, OAI3, AOI4, OAI4 in ABC default gate lib, add "abc -g all", fixes #1273 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-08-09 19:17:59 +02:00
Eddie Hung 313c9ec8df Cleanup some more 2019-08-09 10:13:49 -07:00
whitequark 39f4c1096a
Merge pull request #1267 from whitequark/proc_prune-fix-1243 
proc_prune: fix handling of exactly identical assigns
 2019-08-09 17:10:46 +00:00
Eddie Hung d9c1664462 Simplify opt_expr tests using equiv_opt 2019-08-09 10:08:17 -07:00
Eddie Hung acfb672d34 A bit more on where $lcu comes from 2019-08-09 09:50:47 -07:00
Eddie Hung 5aef998957 Add more comments 2019-08-09 09:48:17 -07:00
Eddie Hung 446dcb3ed3 Add __STDC_FORMAT_MACROS before <inttypes.h> as per @mithro 2019-08-09 09:17:35 -07:00
Miodrag Milanovic 8853d6d232 ABC requires it like this 2019-08-09 08:54:17 +02:00
Miodrag Milanovic 5130a65865 Propagate parameters for Travis build 2019-08-09 08:06:14 +02:00
Eddie Hung dae7c59358 Add a few comments to document $alu and $lcu 2019-08-08 10:05:28 -07:00
Eddie Hung ac2fc3a144
Merge pull request #1264 from YosysHQ/eddie/fix_1254 
opt_lut to ignore LUT cells, or those that drive bits, with (* keep *)
 2019-08-08 07:58:33 -07:00
Eddie Hung 61d7f1997b
Merge pull request #1266 from YosysHQ/eddie/ice40_full_adder 
Wrap SB_LUT+SB_CARRY into $__ICE40_CARRY_WRAPPER
 2019-08-08 07:58:11 -07:00
whitequark 0b09a347dc proc_prune: fix handling of exactly identical assigns. 
Before this commit, in a process like:
   process $proc$bug.v:8$3
     assign $foo \bar
     switch \sel
       case 1'1
         assign $foo 1'1
         assign $foo 1'1
       case
         assign $foo 1'0
     end
   end
both of the "assign $foo 1'1" would incorrectly be removed.

Fixes #1243.
 2019-08-08 05:32:35 +00:00
Eddie Hung 8bf45f34c4 Remove dump call 2019-08-07 21:36:02 -07:00
Eddie Hung 2b6cdfb39f Move tests/various/opt* into tests/opt/ 2019-08-07 21:35:48 -07:00
Eddie Hung d5e8c0e6d3 Remove ice40_unlut call, simply do equiv_opt on synth_ice40 2019-08-07 21:33:56 -07:00
Eddie Hung 35bf509603 Add testcase from removed opt_ff.{v,ys} 2019-08-07 21:31:32 -07:00
Eddie Hung 4545bf482f Remove tests/opt/opt_ff.{v,ys} as they don't seem to do anything but run 2019-08-07 16:48:38 -07:00
Eddie Hung 9776084eda Allow whitebox modules to be overwritten 2019-08-07 16:40:24 -07:00
Eddie Hung 9962e6fc1a Update CHANGELOG 2019-08-07 16:33:46 -07:00
Eddie Hung 675c1d4218 Add ice40_wrapcarry pass, rename $__ICE40_FULL_ADDER -> CARRY_WRAPPER 2019-08-07 16:29:38 -07:00
Eddie Hung cc331cf70d Add test 2019-08-07 16:29:38 -07:00
Eddie Hung ea8ac8fd74 Remove ice40_unlut 2019-08-07 16:29:38 -07:00
Eddie Hung 6b314c8371 Wrap SB_CARRY+SB_LUT into $__ICE40_FULL_ADDER 2019-08-07 16:29:38 -07:00
Eddie Hung f69410daaf opt_lut to ignore LUT cells, or those that drive bits, with (* keep *) 2019-08-07 13:15:02 -07:00
Eddie Hung 3414ee1e3f
Merge pull request #1248 from YosysHQ/eddie/abc9_speedup 
abc9: speedup by using using "clean" more efficiently
 2019-08-07 12:25:26 -07:00