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Author SHA1 Message Date
whitequark 128522f173 verilog_backend: in non-SV mode, add a trigger for `always @*`. 
This commit only affects translation of RTLIL processes (for which
there is limited support).

Due to the event-driven nature of Verilog, processes like

    reg x;
    always @*
        x <= 1;

may never execute. This can be fixed in SystemVerilog code by using
`always_comb` instead of `always @*`, but in Verilog-2001 the options
are limited. This commit implements the following workaround:

    reg init = 0;
    reg x;
    always @* begin
        if (init) begin end
        x <= 1;
    end

Fixes #2271.
 2020-07-16 11:30:14 +00:00
whitequark d9f680b236 verilog_backend: add `-sv` option, make `-o <filename>.sv` work. 
See #2271.
 2020-07-16 10:44:08 +00:00
whitequark a87e338381
Merge pull request #2270 from whitequark/cxxrtl-fix-typo 
cxxrtl: fix typo
 2020-07-16 09:48:10 +00:00
whitequark cb757b28b4
Merge pull request #2269 from YosysHQ/claire/bisonwall 
Use "bison -Wall -Werror" for verilog front-end
 2020-07-15 19:20:33 +00:00
Claire Wolf 51ee0b683f Treat all bison warnings as errors in verilog front-end 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-15 11:57:31 +02:00
Claire Wolf 7a79843cc3 Use %precedence in verilog_parser.y 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-15 11:54:28 +02:00
Claire Wolf 24540291c7 Fix bison warnings for missing %empty 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-15 11:50:59 +02:00
Claire Wolf 1f4e452609 Run bison with -Wall for verilog front-end 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-15 11:49:36 +02:00
clairexen 021ce8e596
Merge pull request #2257 from antmicro/fix-conflicts 
Restore #2203 and #2244 and fix parser conflicts
 2020-07-15 11:49:09 +02:00
Kamil Rakoczy 02c071888b Add missing semicolons 
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
 2020-07-15 10:15:13 +02:00
Marcelina Kościelnicka 61a7ec4768 opt_merge: Dedup one more use of FF cell type list. 2020-07-15 06:19:18 +02:00
Marcelina Kościelnicka a786091b46 achronix: Use dfflegalize. 2020-07-14 23:12:16 +02:00
whitequark a5cf000377 cxxrtl: fix typo. NFC. 2020-07-14 16:10:30 +00:00
Marcelina Kościelnicka 3050454d6e anlogic: Use dfflegalize. 2020-07-14 05:02:50 +02:00
Marcelina Kościelnicka 3209c0762a intel: Use dfflegalize. 2020-07-13 19:21:05 +02:00
Lofty a3a90f6377 Revert "intel_alm: direct M10K instantiation" 
This reverts commit 09ecb9b2cf.
 2020-07-13 18:05:38 +02:00
whitequark 38b814b525
Merge pull request #2263 from whitequark/cxxrtl-capi-eval-commit 
cxxrtl: expose eval() and commit() via the C API
 2020-07-13 02:44:36 +00:00
whitequark 5349a922e4 cxxrtl: expose eval() and commit() via the C API. 2020-07-12 23:34:18 +00:00
Marcelina Kościelnicka 347dd01c2f xilinx: Fix srl regression. 
Of standard yosys cells, xilinx_srl only works on $_DFF_?_ and
$_DFFE_?P_, which get upgraded to $_SDFFE_?P?P_ by dfflegalize at the
point where xilinx_srl is called for non-abc9.  Fix this by running
ff_map.v first, resulting in FDRE cells, which are handled correctly.
 2020-07-12 23:41:27 +02:00
Marcelina Kościelnicka b33744b03a proc_dlatch: Remove init values for combinatorial processes. 
Fixes #2258.
 2020-07-12 18:50:30 +02:00
Marcelina Kościelnicka 240351c44e dfflegalize: Gather init values from all wires. 
Skipping non-selected wires is unsound in an obvious way.
 2020-07-12 17:39:13 +02:00
clairexen eef0ec6aed
Merge pull request #2256 from YosysHQ/claire/fix2241 
Add AST_EDGE support to AstNode::detect_latch()
 2020-07-10 19:07:50 +02:00
Claire Wolf f9ed09423e Add AST_EDGE support to AstNode::detect_latch(), fixes #2241 
Signed-off-by: Claire Wolf <claire@symbioticeda.com>
 2020-07-10 18:41:13 +02:00
Kamil Rakoczy d77b3305d8 Fix S/R conflicts 
This commit fixes S/R conflicts introduced by commit 6f9be93.

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
 2020-07-10 15:03:53 +02:00
Kamil Rakoczy 0ffaddee5e Fix R/R conflicts 
This commit fixes R/R conflicts introduced by commit 7e83a51.
Parameter logic is already defined as part of `param_range_type` rule.

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
 2020-07-10 15:03:01 +02:00
Kamil Rakoczy de649b9194 Revert "Revert PRs #2203 and #2244." 
This reverts commit 9c120b89ac.
 2020-07-10 09:59:48 +02:00
Dan Ravensloft 7dc0439de4 sf2: replace sf2_iobs with {clkbuf,iopad}map 2020-07-09 21:28:52 +01:00
whitequark c0bcbe1f62
Merge pull request #2255 from whitequark/bison-Werror-conflicts 
verilog_parser: turn S/R and R/R conflicts into hard errors
 2020-07-09 20:17:19 +00:00
whitequark 0e9b889b77
Merge pull request #2254 from whitequark/cxxrtl-extern-c 
cxxrtl: add missing extern "C"
 2020-07-09 20:17:12 +00:00
Marcelina Kościelnicka edbaf2fdf6 sf2: Use dfflegalize. 2020-07-09 21:56:14 +02:00
whitequark dc35ef05f9 verilog_parser: turn S/R and R/R conflicts into hard errors. 
Fixes #2253.
 2020-07-09 19:36:59 +00:00
whitequark 9c120b89ac Revert PRs #2203 and #2244. 
This reverts commit 7e83a51fc9.
This reverts commit b422f2e4d0.
This reverts commit 7cb56f34b0.
This reverts commit 6f9be939bd.
This reverts commit 76a34dc5f3.
 2020-07-09 19:36:32 +00:00
whitequark ab59e33b2b cxxrtl: add missing extern "C". 
This bug was hidden if a header was generated.
 2020-07-09 17:52:52 +00:00
Marcelina Kościelnicka f313211c32 xilinx: Use dfflegalize. 2020-07-09 18:54:23 +02:00
Marcelina Kościelnicka 7ed9d18907 dfflibmap: Refactor to use dfflegalize internally. 2020-07-09 18:51:03 +02:00
Lucas Castro 68babb2ae4
Fix issue #2251 (#2252) 
* Fix #2251 - YosysJS ReferenceError: _memset is not defined.
Add '_memset' in emcc EXPORTED_FUNCTIONS in Makefile.
 2020-07-09 18:50:26 +02:00
Marcelina Kościelnicka 32d2cc8c28 clkbufmap: improve input pad handling. 
- allow inserting only the input pad cell
- do not insert the usual buffer if the input pad already acts as a
  buffer
 2020-07-09 18:48:01 +02:00
clairexen 802671b22e
Merge pull request #2244 from antmicro/logic 
Add logic type support to parameters
 2020-07-09 18:39:30 +02:00
Marcelina Kościelnicka 03e28f7ab4 clk2fflogic: Consistently treat async control signals as negative hold. 
This fixes some dfflegalize equivalence checks, and breaks others — and
I strongly suspect the others are due to bad support for multiple
async inputs in `proc` (in particular, lack of proper support for
dlatchsr and sketchy circuits on dffsr control inputs).
 2020-07-09 18:12:47 +02:00
Marcelina Kościelnicka e9c2c1b717 dfflegalize: Add special support for const-D latches. 
Those can be created by `opt_dff` when optimizing `$adff` with const
clock, or with D == Q.  Make dfflegalize do the opposite transform
when such dlatches would be otherwise unimplementable.
 2020-07-09 18:11:32 +02:00
whitequark 000fd08198
Merge pull request #2246 from YosysHQ/mwk/dfflegalize-typo 
dfflegalize: typo fix
 2020-07-07 22:46:37 +00:00
Marcelina Kościelnicka 943147b768 dfflegalize: typo fix 2020-07-07 15:00:52 +02:00
Marcelina Kościelnicka d5e5d96527 efinix: Use dfflegalize. 2020-07-06 12:28:17 +02:00
Marcelina Kościelnicka c73ebeb90e gowin: Use dfflegalize. 2020-07-06 12:27:46 +02:00
Kamil Rakoczy b422f2e4d0 Add logic param and integer bad syntax tests 
Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
 2020-07-06 09:18:48 +02:00
Lukasz Dalek 7e83a51fc9 Support logic typed parameters 
Signed-off-by: Lukasz Dalek <ldalek@antmicro.com>
 2020-07-06 09:18:48 +02:00
Dan Ravensloft 09ecb9b2cf intel_alm: direct M10K instantiation 2020-07-05 23:28:59 +02:00
Marcelina Kościelnicka af54b8bc61 Naming fixes. 2020-07-05 22:21:59 +02:00
Dan Ravensloft 7f45cab27a synth_gowin: ABC9 support 
This adds ABC9 support for synth_gowin; drastically improving
synthesis quality.
 2020-07-05 22:07:17 +02:00
Dan Ravensloft 0d4c2f0a65 intel_alm: add Cyclone 10 GX tests 2020-07-05 21:36:38 +02:00