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4010 Commits

Author SHA1 Message Date
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 18ea65ef04 Add "yosys-smtbmc --aig <aim_filename>:<aiw_filename>" support 2017-01-30 11:38:43 +01:00
Clifford Wolf fe29869ec5 Add $ff and $_FF_ support to equiv_simple 2017-01-30 10:50:38 +01:00
Clifford Wolf e54c355b41 Add "yosys-smtbmc --aig-noheader" and AIGER mem init support 2017-01-28 15:15:02 +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
Clifford Wolf b0a430f601 Merge branch 'master' of github.com:cliffordwolf/yosys 2017-01-26 08:59:26 +01:00
Clifford Wolf b54972c112 Fix RTLIL::Memory::start_offset initialization 2017-01-25 17:00:59 +01:00
C-Elegans 2fa0fd4a37 Do not use b.as_int() in calculation of bit set 2017-01-21 12:58:26 -05:00
Clifford Wolf fea528280b Add "enum" and "typedef" lexer support 2017-01-17 17:33:52 +01:00
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
Clifford Wolf 87fe8ab3f2 Merge pull request #293 from thoughtpolice/minor-cleanup 
Delete some dead code in the Hierarchy pass
 2017-01-16 10:25:25 +01:00
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
Andrew Zonenberg 0c83a30f95 Merge https://github.com/cliffordwolf/yosys 2017-01-15 09:43:15 -08:00
Clifford Wolf 78f65f89ff Fix bug in AstNode::mem2reg_as_needed_pass2() 2017-01-15 13:52:50 +01:00
Clifford Wolf b7cfb7dbd2 Fix $initstate handling bug in yosys-smtbmc 2017-01-11 14:14:12 +01:00
Clifford Wolf 8953a55cd8 Update ABC to hg id f8cadfe3861f 2017-01-11 10:56:27 +01:00
Clifford Wolf 8012de40b9 Updated ABC to hg id 38b26a543f1d 2017-01-08 11:57:52 +01:00
Andrew Zonenberg ac90de73be Merge https://github.com/cliffordwolf/yosys 2017-01-05 06:05:58 -08:00
Clifford Wolf 2d32c6c4f6 Fixed handling of local memories in functions 2017-01-05 13:19:03 +01:00
Clifford Wolf 0cac95ea94 Added "check -initdrv" 2017-01-04 18:12:41 +01:00
Clifford Wolf 81a9ee2360 Added handling of local memories and error for local decls in unnamed blocks 2017-01-04 16:03:04 +01:00
Clifford Wolf b9ad91b93e Implicitly set "yosys-smtbmc --noprogress" on windows 2017-01-04 15:23:48 +01:00
Clifford Wolf 080004b19a Fixed typo in tests/simple/arraycells.v 2017-01-04 12:39:01 +01:00
Clifford Wolf ed812ea39c Fixed "yosys-smtbmc --noprogress" 2017-01-04 12:03:04 +01:00
Clifford Wolf dfb461fe52 Added Verilog $rtoi and $itor support 2017-01-03 17:40:58 +01:00
Clifford Wolf 81bb952e5d Handle "always 1" like "always -1" in .smtc files 2017-01-02 20:08:03 +01:00
Andrew Zonenberg babd8dc5b1 Merge https://github.com/cliffordwolf/yosys 2017-01-01 14:08:16 -08:00
Clifford Wolf f0df7dd796 Added cell port resizing to hierarchy pass 2017-01-01 23:03:44 +01:00
Andrew Zonenberg 27a626ce98 greenpak4: Added POUT to GP_COUNTx cells 2017-01-01 00:56:20 -08:00
Clifford Wolf a7fb64efe6 Updated ABC to hg id 55cd83f432c0 2016-12-31 21:52:27 +01:00
Clifford Wolf 6b2c23c721 Bugfix in RTLIL::SigSpec::remove2() 2016-12-31 16:14:42 +01:00
Clifford Wolf 7da7a6d1df Updated ABC to hg id 8c6a635f7a20 2016-12-29 12:20:35 +01:00
Clifford Wolf 2198948398 Improved write_json help message 2016-12-29 12:13:29 +01:00
Clifford Wolf 4f5efc3416 Updated ABC to hg id f591c081d5e7 2016-12-26 17:52:38 +01:00
Clifford Wolf 4cf3170194 Merge pull request #284 from azonenberg/master 
greenpak4: Support for many new cell types
 2016-12-24 14:28:39 +01:00
Andrew Zonenberg 5ffede5c0e Merge pull request #1 from azonenberg-hk/master 
Pull changes from HK trip
 2016-12-23 12:32:55 -08:00
Andrew Zonenberg 9f69a70d74 Merge https://github.com/cliffordwolf/yosys 2016-12-23 05:10:37 -08:00
Clifford Wolf 33a22f8768 Simplified log_spacer() code 2016-12-23 02:06:46 +01:00
Clifford Wolf a0dff87a57 Added "yosys -W regex" 2016-12-22 23:41:44 +01:00
Clifford Wolf f144adec58 Added AIGER back-end to automatic back-end detection 2016-12-21 10:16:47 +01:00
Clifford Wolf f31e6a7174 Updated ABC to hg rev a4872e22c646 2016-12-21 10:16:10 +01:00
Clifford Wolf 3d0e51f813 Updated ABC to hg rev 8bab2eedbba4 2016-12-21 09:13:20 +01:00
Andrew Zonenberg ada98844b9 greenpak4: Added INT pin to GP_SPI 2016-12-21 11:35:29 +08:00
Andrew Zonenberg 6b526e9382 greenpak4: removed unused MISO pin from GP_SPI 2016-12-21 11:33:32 +08:00
Andrew Zonenberg 638f3e3b12 greenpak4: Removed SPI_BUFFER parameter 2016-12-20 13:07:49 +08:00
Andrew Zonenberg 073e8df9f1 greenpak4: replaced MOSI/MISO with single one-way SDAT pin 2016-12-20 12:34:56 +08:00
Andrew Zonenberg d4a05b499e greenpak4: Changed port names on GP_SPI for clarity 2016-12-20 10:30:38 +08:00
Andrew Zonenberg eb80ec84aa greenpak4: Initial implementation of GP_SPI cell 2016-12-20 09:58:02 +08:00