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Code Activity
13140 commits 121 branches 59 tags 72 MiB
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595 commits

Author SHA1 Message Date
Eddie Hung
5ac7e38d0a Fix spacing 2019-05-23 12:58:30 -07:00
Eddie Hung
50ed34a6d0 opt_rmdff to work on $dffe and $_DFFE_* 2019-05-23 11:26:18 -07:00
Clifford Wolf
e3f9ccf56d Keep zero-width wires in opt_clean if and only if they are ports, fixes #1023 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-22 13:57:36 +02:00
Clifford Wolf
c4b8575f43 Add "wreduce -keepdc", fixes #1016 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-20 15:36:13 +02:00
Clifford Wolf
a21a84b3b4 Improvements in opt_clean 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-15 16:01:28 +02:00
Clifford Wolf
8166a142dd Fix handling of glob_abort_cnt in opt_muxtree, fixes #1002 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-12 13:51:12 +02:00
Clifford Wolf
a76189e7ad More opt_clean cleanups 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-07 14:41:58 +02:00
Clifford Wolf
752553d8e9
Merge pull request #946 from YosysHQ/clifford/specify 
Add specify parser
 2019-05-06 20:57:15 +02:00
Clifford Wolf
d187be39d6 Merge branch 'master' of github.com:YosysHQ/yosys into clifford/fix968 2019-05-06 15:41:13 +02:00
Clifford Wolf
ba6ce21a74 Cleanups in opt_clean 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-06 12:45:22 +02:00
Clifford Wolf
c7f2e93024 Merge branch 'master' of github.com:YosysHQ/yosys into clifford/specify 2019-05-06 11:46:10 +02:00
Clifford Wolf
a01386c0e4 Improve opt_clean handling of unused wires 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-04 09:47:16 +02:00
Eddie Hung
d9c4644e88 Merge remote-tracking branch 'origin/master' into clifford/specify 2019-05-03 15:05:57 -07:00
Clifford Wolf
373b236108
Merge pull request #969 from YosysHQ/clifford/pmgenstuff 
Improve pmgen, Add "peepopt" pass with shift-mul pattern
 2019-05-03 20:39:50 +02:00
Clifford Wolf
42190207b4 Improve opt_expr and opt_clean handling of (partially) undriven and/or unused wires, fixes #981 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-03 14:25:01 +02:00
Clifford Wolf
5c2c0b4bb2 Further improve unused-detection for opt_clean driver-driver conflict warning 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-03 09:22:26 +02:00
Clifford Wolf
f12e1155f1 Improve unused-detection for opt_clean driver-driver conflict warning 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-03 09:12:10 +02:00
Clifford Wolf
a30b99e66e Silently resolve completely unused cell-vs-const driver-driver conflicts 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-05-01 09:29:34 +02:00
Clifford Wolf
32ff37bb5a Fix segfault in wreduce 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-30 22:20:45 +02:00
Clifford Wolf
9d117eba9d Add handling of init attributes in "opt_expr -undriven" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-30 14:46:12 +02:00
Clifford Wolf
b515fd2d25 Add peepopt_muldiv, fixes #930 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-30 11:25:15 +02:00
Clifford Wolf
754b1ee4b3 Drive dangling wires with init attr with their init value, fixes #956 2019-04-29 08:44:53 +02:00
Clifford Wolf
71c38d9de5 Add $specrule cells for $setup/$hold/$skew specify rules 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-23 21:36:59 +02:00
Clifford Wolf
634482380c Preserve $specify[23] cells 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-23 21:36:59 +02:00
Clifford Wolf
c84cdc711c Remove some left-over log_dump() 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-23 17:55:41 +02:00
Clifford Wolf
8ed4a53d99
Merge pull request #951 from YosysHQ/clifford/logdebug 
Add log_debug() framework
 2019-04-22 20:09:51 +02:00
Clifford Wolf
e158ea2097 Add log_debug() framework 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-22 17:25:52 +02:00
Clifford Wolf
0f0ada13f4 Add full_pmux feature to pmux2shiftx 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-22 15:26:20 +02:00
Clifford Wolf
fc23af1707 Auto-initialize OnehotDatabase on-demand in pmux2shiftx.cc 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 18:13:37 +02:00
Clifford Wolf
97e9caa4fa Add "onehot" pass, improve "pmux2shiftx" onehot handling 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 17:52:16 +02:00
Clifford Wolf
b3a3e08e38 Improve "pmux2shiftx" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 02:03:44 +02:00
Clifford Wolf
e06d158e8a Fix some typos 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 01:18:07 +02:00
Clifford Wolf
37728520a6 Improvements in "pmux2shiftx" 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 01:15:48 +02:00
Clifford Wolf
0070184ea9 Improvements in pmux2shiftx 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 00:38:25 +02:00
Clifford Wolf
177878cbb0 Improve pmux2shift ctrl permutation finder 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 00:38:25 +02:00
Clifford Wolf
481f0015be Complete rewrite of pmux2shiftx 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 00:38:25 +02:00
Clifford Wolf
1bf8c2b823 Import initial pmux2shiftx from eddieh 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-04-20 00:38:25 +02:00
Clifford Wolf
7cfd83c341 Trim init attributes when resizing FFs in "wreduce", fixes #887 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-22 11:42:19 +01:00
Clifford Wolf
f806b95ed6 Improve handling of and-with-1 and or-with-0 in opt_expr, fixes #327 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-03-14 20:52:00 +01:00
Clifford Wolf
e847690bda Fix multiple issues in wreduce FF handling, fixes #835 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-28 17:24:46 -08:00
Clifford Wolf
cd722f26a5 Cleanups in ARST handling in wreduce 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-24 20:34:23 +01:00
Keith Rothman
25680f6a07 Fix WREDUCE on FF not fixing ARST_VALUE parameter. 
Adds test case that fails without code change.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>
 2019-02-22 10:30:42 -08:00
Clifford Wolf
0e371109b0
Merge pull request #818 from YosysHQ/clifford/dffsrfix 
Fix opt_rmdff handling of $_DFFSR_???_ and $_DLATCHSR_???_, fixes #816
 2019-02-21 18:58:44 +01:00
Clifford Wolf
2da4c9c8f0 Fix opt_rmdff handling of $_DFFSR_???_ and $_DLATCHSR_???_, fixes #816 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-21 13:49:45 +01:00
Clifford Wolf
246391200e Add FF support to wreduce 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-02-20 16:36:42 +01:00
Clifford Wolf
8a63fc51d3 Bugfix in $memrd sharing 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-01-07 10:04:47 +01:00
Clifford Wolf
d98fe8ce1f
Merge pull request #775 from whitequark/opt_flowmap 
flowmap: new techmap pass
 2019-01-03 17:03:18 +01:00
whitequark
07af772a72 flowmap: new techmap pass. 2019-01-03 14:28:19 +00:00
Clifford Wolf
0fc6e2bfcf
Merge pull request #770 from whitequark/opt_expr_cmp 
opt_expr: refactor and improve simplification of comparisons
 2019-01-02 17:34:04 +01:00
whitequark
bf8db55ef3 opt_expr: improve simplification of comparisons with large constants. 
The idea behind this simplification is that a N-bit signal X being
compared with an M-bit constant where M>N and the constant has Nth
or higher bit set, it either always succeeds or always fails.

However, the existing implementation only worked with one-hot signals
for some reason. It also printed incorrect messages.

This commit adjusts the simplification to have as much power as
possible, and fixes other bugs.
 2019-01-02 15:45:28 +00:00