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134 Commits

Author SHA1 Message Date
Clifford Wolf 03fb92ed6f Add "opt_mem" pass 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2019-11-22 17:45:22 +01:00
Eddie Hung 48d0f99406 stoi -> atoi 2019-08-07 11:09:17 -07:00
Eddie Hung c11ad24fd7 Use std::stoi instead of atoi(<str>.c_str()) 2019-08-06 16:45:48 -07:00
Eddie Hung 046e1a5214 Use State::S{0,1} 2019-08-06 16:22:47 -07:00
Eddie Hung 3486235338 Make liberal use of IdString.in() 2019-08-06 16:18:18 -07:00
Eddie Hung ab3917d079 Error out if enable > dbits 2019-07-13 03:39:23 -07:00
David Shah d45936fe5f memory_dff: Fix checking of feedback mux input when more than one mux 
Signed-off-by: David Shah <dave@ds0.me>
 2019-07-02 13:35:50 +01:00
Eddie Hung 42720ef6fe Fix spacing 2019-06-25 08:33:17 -07:00
Eddie Hung c4e4902098 Move only one consumer check outside of while loop 2019-06-25 08:29:55 -07:00
Eddie Hung b7deaceadd Walk through as many muxes as exist for rd_en 2019-06-24 18:33:06 -07:00
David Shah 2bf3ca6443 memory_bram: Fix multiport make_transp 
Signed-off-by: David Shah <dave@ds0.me>
 2019-04-07 16:56:31 +01:00
David Shah 6acbc016f4 memory_bram: Consider read enable for address expansion register 
Signed-off-by: David Shah <dave@ds0.me>
 2019-04-02 19:47:50 +01:00
David Shah 60594ad40c memory_bram: Reset make_transp when growing read ports 
Signed-off-by: David Shah <dave@ds0.me>
 2019-03-27 17:19:14 +00:00
David Shah ac6cc88db3 memory_bram: Fix multiclock make_transp 
Signed-off-by: David Shah <dave@ds0.me>
 2019-03-24 16:21:36 +00:00
whitequark 0c318e7db5 memory_collect: do not truncate 'x from \INIT. 
The semantics of an RTLIL constant that has less bits than its
declared bit width is zero padding. Therefore, if the output of
memory_collect will be used for simulation, truncating 'x from
the end of \INIT will produce incorrect simulation results.
 2018-12-21 02:01:27 +00:00
David Shah 2b16d4ed3d memory_dff: Fix typo when checking init value 
Signed-off-by: David Shah <davey1576@gmail.com>
 2018-12-18 17:40:01 +00:00
Graham Edgecombe 4fef9689ab memory_bram: Fix initdata bit order after shuffling 
In some cases the memory_bram pass shuffles the order of the bits in a
memory's RD_DATA port. Although the order of the bits in the WR_DATA and
WR_EN ports is changed to match the RD_DATA port, the order of the bits
in the initialization data is not.

This causes reads of initialized memories to return invalid data (until
the initialization data is overwritten).

This commit fixes the bug by shuffling the initdata bits in exactly the
same order as the RD_DATA/WR_DATA/WR_EN bits.
 2018-12-11 21:02:49 +00:00
David Shah 3420ae5ca5 memory_bram: Reset make_outreg when growing read ports 
Signed-off-by: David Shah <dave@ds0.me>
 2018-10-19 14:46:31 +01:00
Henner Zeller 3aa4484a3c Consistent use of 'override' for virtual methods in derived classes. 
o Not all derived methods were marked 'override', but it is a great
  feature of C++11 that we should make use of.
o While at it: touched header files got a -*- c++ -*- for emacs to
  provide support for that language.
o use YS_OVERRIDE for all override keywords (though we should probably
  use the plain keyword going forward now that C++11 is established)
 2018-07-20 23:51:06 -07:00
Clifford Wolf cee4b1e6bc Disable memory_dff for initialized FFs 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-28 17:16:15 +02:00
Clifford Wolf 74efafc1cf Add some cleanup code to memory_nordff 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-05-28 16:42:06 +02:00
Clifford Wolf 73c01dca65 Add "memory_nordff" pass 
Signed-off-by: Clifford Wolf <clifford@clifford.at>
 2018-03-06 23:31:51 +01:00
Kaj Tuomi df4ab169a7 Typo fix. 2016-09-08 10:57:16 +03:00
Clifford Wolf 23afeadb5e Fixed handling of transparent bram rd ports on ROMs 2016-08-27 17:06:22 +02:00
Clifford Wolf cad40fc874 Fixed bug in memory_share for memory ports with different ABITS 2016-08-22 14:26:33 +02:00
Clifford Wolf 15ef608453 Added memory_memx pass, "memory -memx", and "prep -memx" 2016-08-19 19:48:26 +02:00
Clifford Wolf f6629b9c29 Optimize memory address port width in wreduce and memory_collect, not verilog front-end 2016-08-19 18:38:25 +02:00
Clifford Wolf ffcdc53a18 Don't sign-extend memory bram initialization data 2016-05-15 00:05:30 +02:00
Clifford Wolf 0bc95f1e04 Added "yosys -D" feature 2016-04-21 23:28:37 +02:00
Clifford Wolf 1761d08dd2 Bugfix and improvements in memory_share 2016-04-21 14:22:58 +02:00
Clifford Wolf ec93680bd5 Renamed opt_share to opt_merge 2016-03-31 08:52:49 +02:00
Clifford Wolf bcc873b805 Fixed some visual studio warnings 2016-02-13 17:31:24 +01:00
Clifford Wolf ddf3e2dc65 Bugfix in memory_dff 2015-10-31 22:01:41 +01:00
Clifford Wolf 207736b4ee Import more std:: stuff into Yosys namespace 2015-10-25 19:30:49 +01:00
Clifford Wolf 4864736167 Bugfix in bram read-enable code 2015-09-25 14:22:33 +02:00
Clifford Wolf 924d9d6e86 Added read-enable to memory model 2015-09-25 12:23:11 +02:00
Clifford Wolf 3501f8e364 Fixed memory_bram for ROMs in BRAMs with write-enable inputs 2015-09-24 11:37:15 +02:00
Larry Doolittle 022f570563 Keep gcc from complaining about uninitialized variables 2015-08-14 23:26:49 +02:00
Clifford Wolf 84bf862f7c Spell check (by Larry Doolittle) 2015-08-14 10:56:05 +02:00
Clifford Wolf 883e09d8ed Use MEMID as name for $mem cell 2015-08-09 13:35:44 +02:00
Clifford Wolf 8d6d5c30d9 Added WORDS parameter to $meminit 2015-07-31 10:40:09 +02:00
Clifford Wolf d2ff5d9994 Do not collect disabled $memwr cells 2015-07-06 13:28:00 +02:00
Clifford Wolf 6c84341f22 Fixed trailing whitespaces 2015-07-02 11:14:30 +02:00
Clifford Wolf 66910e15b2 Modernized memory_dff (and fixed a bug) 2015-06-14 16:15:51 +02:00
Clifford Wolf f6eca509bb Added "memory -nordff" 2015-06-14 15:47:11 +02:00
Clifford Wolf b57cb4a7fe Merge clock inverters in memory_dff 2015-06-09 07:25:12 +02:00
Clifford Wolf 7462618591 Fixed memory_unpack for initialized memories 2015-04-29 19:55:32 +02:00
Clifford Wolf 11f77205f5 Fixed memory_share for unconditional write with part select to memory 2015-04-22 06:40:23 +02:00
Clifford Wolf 7319951145 Added memory_bram "make_outreg" feature 2015-04-09 16:08:54 +02:00
Clifford Wolf 21a1cc1b60 Added support for "file names with blanks" 2015-04-08 12:14:34 +02:00