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yosys
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1216 Commits

Author SHA1 Message Date
Clifford Wolf 9fe6bc48a9 Merge branch 'rmports' of https://github.com/azonenberg/yosys into azonenberg-rmports 2017-08-15 11:19:55 +02:00
Robert Ou 9a64ba3338 abc: Allow +/ filenames in the abc command 2017-08-14 12:11:11 -07:00
Andrew Zonenberg 15e41d6363 rmports: Now remove ports from cell instances if we optimized them out of that cell 2017-08-14 11:44:05 -07:00
Andrew Zonenberg 0ee27d0226 ProcessModule is no longer virtual (why was it in the first place?) 2017-08-14 11:18:09 -07:00
Andrew Zonenberg bd2ac68769 rmports now works on all modules in the design, not just the top. 2017-08-14 11:16:44 -07:00
Andrew Zonenberg d5e5bbad86 Updated Makefile to reflect opt_rmports being renamed to rmports 2017-08-14 11:04:56 -07:00
Andrew Zonenberg 1a6a23f91a Renamed opt_rmports pass to rmports 2017-08-14 11:00:45 -07:00
Andrew Zonenberg 1bb150c231 Improved handling of constant connections in opt_rmports 2017-08-14 10:28:19 -07:00
Andrew Zonenberg 2877d5e504 Fixed handling of cell ports that aren't wires 2017-08-14 10:28:16 -07:00
Andrew Zonenberg 3dd7f42e2b opt_rmports: Fixed incorrect handling of multi-bit nets 2017-08-14 10:28:11 -07:00
Andrew Zonenberg 66aac06eee Removed commented out debug code 2017-08-14 10:28:04 -07:00
Andrew Zonenberg cca3cb5fbb Added opt_rmports pass (remove unconnected ports from top-level modules) 2017-08-14 10:27:59 -07:00
Clifford Wolf 007f29b9c2 Add support for set-reset cell variants to opt_rmdff 2017-08-09 13:29:52 +02:00
Clifford Wolf c4a7958f70 Add handling of constant reset signals to opt_rmdff 2017-08-06 13:27:18 +02:00
Clifford Wolf 5c09f24e48 Fix typo in "abc" pass help message 2017-07-29 16:21:58 +02:00
Clifford Wolf e7d1277a2c Add consolidation of init attributes to opt_clean, some opt_clean log fixes 2017-07-29 00:10:33 +02:00
Clifford Wolf 649bb9374f Add "opt_expr -fine" feature to remove neutral bits from reduce and logic operators 2017-07-26 18:28:55 +02:00
Clifford Wolf b6bd12fade Add error for cell output ports that are connected to constants 2017-07-22 15:08:30 +02:00
Clifford Wolf b3bc7068d1 Fix handling of empty cell port assignments (i.e. ignore them) 2017-07-21 19:32:31 +02:00
Clifford Wolf c00d8a5b73 Add $alu to list of supported cells for "stat -width" 2017-07-14 11:32:49 +02:00
Salvador E. Tropea ca23554528 Excluded $_TBUF_ from opt_merge pass 2017-07-03 13:21:20 -03:00
Clifford Wolf 0a02cdb93b Fix and_or_buffer optimization in opt_expr for signed operators 2017-07-01 16:05:26 +02:00
Clifford Wolf 0f217080cf Add "design -import" 2017-06-30 19:18:52 +02:00
Clifford Wolf 8952bd6f45 Add chtype command 2017-06-30 17:57:34 +02:00
Clifford Wolf 18c030a8c9 Add $tribuf to opt_merge blacklist 2017-06-30 17:44:44 +02:00
Clifford Wolf 155a80dfb7 Fix handling of init values in "abc -dff" and "abc -clk" 2017-06-20 15:32:23 +02:00
Clifford Wolf f6421c83a2 Switched abc "clock domain not found" error to log_cmd_error() 2017-06-20 04:22:34 +02:00
Clifford Wolf 05df3dbee4 Add "setundef -anyseq" 2017-05-28 11:59:05 +02:00
Clifford Wolf 9ed4c9d710 Improve write_aiger handling of unconnected nets and constants 2017-05-28 11:31:35 +02:00
Clifford Wolf fad52abf70 Add aliases for common sets of gate types to "abc -g" 2017-05-24 11:39:05 +02:00
Clifford Wolf 05cdd58c8d Add $_ANDNOT_ and $_ORNOT_ gates 2017-05-17 09:08:29 +02:00
Clifford Wolf 3bbac5c141 Fix equiv_simple, old behavior now available with "equiv_simple -short" 2017-04-28 18:57:53 +02:00
Larry Doolittle 2021ddecb3 Squelch trailing whitespace 2017-04-12 15:11:09 +02:00
Clifford Wolf dee4ec1661 Fix gcc compiler warning 2017-04-05 11:21:06 +02:00
Clifford Wolf 180d704568 Disable opt_merge for $anyseq and $anyconst 2017-02-28 22:17:00 +01:00
Clifford Wolf 1a6c02a532 Add "chformal -assert2assume" and friends 2017-02-28 00:00:44 +01:00
Clifford Wolf db7fc0e32d Add "chformal" pass 2017-02-27 13:25:28 +01:00
Clifford Wolf 5f1d0b1024 Add $live and $fair cell types, add support for s_eventually keyword 2017-02-25 10:36:39 +01:00
Clifford Wolf cf25dc9ce7 Copy attributes to _TECHMAP_REPLACE_ cells 2017-02-16 12:28:42 +01:00
Clifford Wolf 69468d5a16 Do not fix port widths on any blackbox instances 2017-02-13 17:07:38 +01:00
Clifford Wolf db7314bc02 Fix techmap for inout ports connected to inout ports 2017-02-13 16:55:25 +01:00
Clifford Wolf 76c4ee096b Do not eagerly fix port widths on parameterized cells 2017-02-12 17:42:57 +01:00
Clifford Wolf 95dae6d416 Fixed some "used uninitialized" warnings in opt_expr 2017-02-11 10:50:48 +01:00
Clifford Wolf a5bfeb9e07 Add optimization of (a && 1'b1) and (a || 1'b0) 2017-02-11 10:05:00 +01:00
C-Elegans 94b272077d Fix issue #306, "Bug in opt -full" 
Add check for whether the high bit in the constant expression is greater
than the width of the variable, and optimizes that to a constant 1 or
0
 2017-02-10 10:38:02 -05:00
Clifford Wolf e6cc67b46f Fix handling of init attributes with strange width 2017-02-09 16:06:58 +01:00
Clifford Wolf 3928482a3c Add $cover cell type and SVA cover() support 2017-02-04 14:14:26 +01:00
Clifford Wolf 8927e19b13 Update ABC scripts to use "&nf" instead of "map" 2017-02-01 11:15:20 +01:00
Clifford Wolf ffbe8d41f3 Fix indenting and log messages in code merged from opt_compare_pr 2017-01-31 16:20:56 +01:00
Clifford Wolf 19a980277f Merge branch 'opt_compare_pr' of https://github.com/C-Elegans/yosys into C-Elegans-opt_compare_pr 2017-01-31 15:54:41 +01:00
Clifford Wolf 7481ba4750 Improve opt_rmdff support for $dlatch cells 2017-01-31 10:15:04 +01:00
C-Elegans a94c3694d7 Refactor and generalize the comparision optimization 
Generalizes the optimization to:
a < C,
a >= C,
C > a,
C <= a
 2017-01-30 17:52:16 -05:00
Clifford Wolf fe29869ec5 Add $ff and $_FF_ support to equiv_simple 2017-01-30 10:50:38 +01:00
Clifford Wolf 45e10c1c89 Be more conservative with merging large cells into FSMs 2017-01-26 09:19:28 +01:00
Clifford Wolf 49b8160488 Add warnings for quickly growing FSM table size in fsm_expand 2017-01-26 09:05:59 +01:00
C-Elegans 2fa0fd4a37 Do not use b.as_int() in calculation of bit set 2017-01-21 12:58:26 -05:00
C-Elegans 84f9cd0025 Optimize compares to powers of 2 
Remove opt_compare and put comparison pass in opt_expr

assuming a [7:0] is unsigned
a >= (1<<x) becomes |a[7:x]
a <  (1<<x) becomes !a[7:x]

Additionally:
a >= 0 becomes constant true,
a < 0 becomes constant false

delete opt_compare.cc
revert opt.cc to commit b7cfb7dbd (remove opt_compare step)
 2017-01-16 13:45:50 -05:00
Austin Seipp 6781543244 passes/hierarchy: delete some dead code 
Signed-off-by: Austin Seipp <aseipp@pobox.com>
 2017-01-15 16:39:12 -06:00
C-Elegans 943389cdd5 Fix issue #269, optimize signed compare with 0 
add opt_compare pass and add it to opt
for a < 0:
    if a is signed, replace with a[max_bit-1]
for a >= 0:
    if a is signed, replace with ~a[max_bit-1]
 2017-01-15 13:38:29 -05:00
Clifford Wolf 0cac95ea94 Added "check -initdrv" 2017-01-04 18:12:41 +01:00
Clifford Wolf f0df7dd796 Added cell port resizing to hierarchy pass 2017-01-01 23:03:44 +01:00
Clifford Wolf b1cdf772eb Added "design -reset-vlog" 2016-11-30 11:25:55 +01:00
Clifford Wolf ac7a175a3c Improved equiv_purge log output 2016-11-29 13:30:35 +01:00
Clifford Wolf e444e59963 Added wire start_offset and upto handling to splitnets cmd 2016-11-23 13:54:33 +01:00
Clifford Wolf 55785a96eb Improved ABC default scripts 2016-11-19 18:20:54 +01:00
Clifford Wolf 70d7a02cae Added support for hierarchical defparams 2016-11-15 13:35:19 +01:00
Clifford Wolf 1827a48964 Minor bugfix in submod 2016-11-09 13:13:26 +01:00
Clifford Wolf 97ac77513f Bugfix in "setundef" pass 2016-11-08 18:53:36 +01:00
Clifford Wolf ef603c6fe1 Implemented "scc -set_attr" 2016-11-06 00:04:10 +01:00
Clifford Wolf 914aa8a5d3 Bugfix in "scc" command 2016-11-06 00:03:35 +01:00
Clifford Wolf 308a4b4a1b Bugfix in "hierarchy -check" 2016-11-02 20:09:57 +01:00
Clifford Wolf b63cace90f Added support for fsm_encoding="user" 2016-11-02 13:15:49 +01:00
Clifford Wolf 0c8e973d32 Added "fsm_expand -full" 2016-11-02 09:31:39 +01:00
Clifford Wolf d9d38eeedb Bugfix in fsm_map for FSMs without reset state 2016-10-25 23:21:37 +02:00
Clifford Wolf aa72262330 Added avail params to ilang format, check module params in 'hierarchy -check' 2016-10-22 11:05:49 +02:00
Clifford Wolf 3655d7fea7 Added "setparam -type" 2016-10-19 13:54:04 +02:00
Clifford Wolf 15fb56697a Bugfix in "miter -assert" handling of assumptions 2016-10-17 14:56:58 +02:00
Clifford Wolf 6425d34e73 Added clk2fflogic support for $dffsr and $dlatch 2016-10-17 13:28:55 +02:00
Clifford Wolf 3a09d6bb65 Improvements and bugfixes in clk2fflogic 2016-10-16 23:03:29 +02:00
Clifford Wolf 74702b04c2 Build fixes for VS 2015 2016-10-16 20:37:02 +02:00
Clifford Wolf fa535c0b00 Some minor build fixes for Visual C 2016-10-14 18:36:02 +02:00
Clifford Wolf e4c5ee9b89 Avoid using strcasecmp() 2016-10-14 18:20:36 +02:00
Clifford Wolf 2733994aeb Added clk2fflogic 2016-10-14 14:55:07 +02:00
Clifford Wolf 2ef454c3f5 Added opt_rmdff support for $ff cells 2016-10-14 13:02:36 +02:00
Clifford Wolf 53655d173b Added $global_clock verilog syntax support for creating $ff cells 2016-10-14 12:33:56 +02:00
Clifford Wolf ffbb4e992e Added MEMID handling to "flatten" pass 2016-10-14 10:36:37 +02:00
Clifford Wolf ee91350add Added "zinit" pass 2016-10-12 12:05:19 +02:00
Clifford Wolf 8ebba8a35f Added $ff and $_FF_ cell types 2016-10-12 01:18:39 +02:00
Clifford Wolf ed519f578e Added "opt_rmdff -keepdc" 2016-09-30 17:02:38 +02:00
Clifford Wolf e788ad4885 Cosmetic fix in test_autotb.cc 2016-09-19 20:43:43 +02:00
Clifford Wolf 5e155aa121 Avoid creating very long strings in test_autotb 2016-09-19 10:20:20 +02:00
Clifford Wolf d8ad889594 Bugfix in techmap parameter handling 2016-09-14 20:46:54 +02:00
Kaj Tuomi df4ab169a7 Typo fix. 2016-09-08 10:57:16 +03:00
Clifford Wolf cb7dbf4070 Improvements in assertpmux 2016-09-07 12:42:16 +02:00
Clifford Wolf ab18e9df7c Added assertpmux 2016-09-07 00:28:01 +02:00
Clifford Wolf f3f5a02045 Added "tee +INT -INT" 2016-09-06 17:43:24 +02:00
Clifford Wolf fc5281b3f7 Run log_flush() before solving in sat command 2016-09-06 17:35:25 +02:00
Clifford Wolf 4ea7054b56 Improved init spec handling in opt_rmdff, modernized the code a bit 2016-08-30 01:34:04 +02:00
Clifford Wolf eae390ae17 Removed $predict again 2016-08-28 21:35:33 +02:00
Clifford Wolf 66582964bc Improved "show" help message 2016-08-28 12:34:36 +02:00