6af5e74f95
smt2: Fix $shift/$shiftx with negative shift ammounts
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Fixes #3431 , fixes #3344
2022-08-02 20:16:41 +02:00
930bcf0e75
smt2, btor: Revert calling memory_map -rom-only
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This approach had major issues with ROMs whose initialization was not
fully defined. If required, memory_map -rom-only -keepdc should be
called early in a formal flow instead. (This does require a careful
choice of optimization passes though. Sby's scripts will be updated
accordingly.)
2022-06-29 18:28:34 +02:00
d78d807a7f
memory_map: -keepdc option for formal
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Use it when invoking memory_map -rom-only from write_{smt2,btor}.
2022-06-27 15:47:55 +02:00
4adef63cd4
smt2, btor: Use memory_map -rom-only to make ROMs usable for k-induction
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This avoids provability regressions now that we infer more ROMs.
This fixes #3378
2022-06-17 17:23:13 +02:00
ac22f1764d
smt2: emit smtlib2_comb_expr outputs after all inputs
2022-06-07 19:06:45 +02:00
cd57c5adb3
smt2: Add smtlib2_comb_expr attribute to allow user-selected smtlib2 expressions
2022-06-02 22:37:29 -07:00
d53479a0d6
add $divfloor support to write_smt2
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Fixes : #3330
2022-05-24 01:34:25 -07:00
c7ef0f2932
smt2: Make write port array stores conditional on nonzero write mask
2022-04-20 17:49:48 +02:00
dc739362c7
print cell name for properties in yosys-smtbmc
2022-02-22 17:00:10 +01:00
93508d58da
Add $bmux and $demux cells.
2022-01-28 23:34:41 +01:00
e7d89e653c
Hook up $aldff support in various passes.
2021-10-02 21:01:21 +02:00
72787f52fc
Fixing old e-mail addresses and deadnames
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s/((Claire|Xen|Xenia|Clifford)\s+)+(Wolf|Xen)\s+<(claire|clifford)@(symbioticeda.com|clifford.at|yosyshq.com)>/Claire Xenia Wolf <claire@yosyshq.com>/gi;
s/((Nina|Nak|N\.)\s+)+Engelhardt\s+<nak@(symbioticeda.com|yosyshq.com)>/N. Engelhardt <nak@yosyshq.com>/gi;
s/((David)\s+)+Shah\s+<(dave|david)@(symbioticeda.com|yosyshq.com|ds0.me)>/David Shah <dave@ds0.me>/gi;
s/((Miodrag)\s+)+Milanovic\s+<(miodrag|micko)@(symbioticeda.com|yosyshq.com)>/Miodrag Milanovic <micko@yosyshq.com>/gi;
s,https?://www.clifford.at/yosys/,http://yosyshq.net/yosys/,g ;
2021-06-08 00:39:36 +02:00
cbf6b719fe
Make a few passes auto-call Mem::narrow instead of rejecting wide ports.
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This essentially adds wide port support for free in passes that don't
have a usefully better way of handling wide ports than just breaking
them up to narrow ports, avoiding "please run memory_narrow" annoyance.
2021-05-28 00:40:56 +02:00
69bf5c81c7
Reject wide ports in some passes that will never support them.
2021-05-25 02:07:25 +02:00
c4cc888b2c
kernel/rtlil: Extract some helpers for checking memory cell types.
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There will soon be more (versioned) memory cells, so handle passes that
only care if a cell is memory-related by a simple helper call instead of
a hardcoded list.
2021-05-22 21:43:00 +02:00
979347999f
btor, smt2, smv: Add a hint on how to deal with funny FF types.
2021-02-25 22:04:04 +01:00
f272c8b407
smt2: Use Mem helper.
2020-10-21 17:51:20 +02:00
3238190797
use the new isPublic() in a few places
2020-09-14 12:43:18 +02:00
c1fff52477
write_smt2: fix SMT-LIB tutorial URL
2020-08-29 20:02:35 +00:00
91682d189e
Ensure smt2 comments are associated with accessors
2020-08-20 16:00:05 -04:00
f037985337
smt2: Add `-solver-option` option.
2020-07-20 21:54:56 +00:00
7191dd16f9
Use C++11 final/override keywords.
2020-06-18 23:34:52 +00:00
17163cf43a
Add flooring modulo operator
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The $div and $mod cells use truncating division semantics (rounding
towards 0), as defined by e.g. Verilog. Another rounding mode, flooring
(rounding towards negative infinity), can be used in e.g. VHDL. The
new $modfloor cell provides this flooring modulo (also known as "remainder"
in several languages, but this name is ambiguous).
This commit also fixes the handling of $mod in opt_expr, which was
previously optimized as if it was $modfloor.
2020-05-28 22:59:03 +02:00
956ecd48f7
kernel: big fat patch to use more ID::*, otherwise ID(*)
2020-04-02 09:51:32 -07:00
fdafb74eb7
kernel: use more ID::*
2020-04-02 07:14:08 -07:00
c23c2c59c1
Update `RTLIL::id2cstr()` usage to `log_id`.
2020-04-01 06:53:28 +00:00
b08932cb81
fix typo in `write_smt2` help
2020-03-23 02:14:26 -07:00
020f6d167a
Merge pull request #1768 from boqwxp/smt2_cleanup
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Clean up pseudo-private member usage in `backends/smt2/smt2.cc`.
2020-03-16 13:49:10 +01:00
07f0874779
Clean up pseudo-private member usage in `backends/smt2/smt2.cc`.
2020-03-13 21:49:12 +00:00
0fda8308bc
Add support for optimizing exists-forall problems.
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Modifies smt2 backend to recognize `$anyconst` etc. assigned to a wire with the `maximize` or `minimize` attribute and emit `; yosys-smt2-maximize` or `; yosys-smt2-minimize` directives as appropriate.
Modifies `backends/smt2/smtbmc.py` and `smtio.py` to recognize those directives and emit a `(maximize ...)` or `(minimize ...)` command at the end of `smt_forall_assert()`, as described in the paper "νZ - An Optimizing SMT Solver" by Nikolaj Bjørner et al.
Adds an example `examples/smtbmc/demo9.v` to show how it can be used.
2020-03-13 17:10:29 +00:00
6d77236f38
substr() -> compare()
2019-08-07 12:20:08 -07:00
3486235338
Make liberal use of IdString.in()
2019-08-06 16:18:18 -07:00
023086bd46
Add $_NMUX_, add "abc -g cmos", add proper cmos cell costs
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-08-06 04:47:55 +02:00
f4abc21d8a
Add "whitebox" attribute, add "read_verilog -wb"
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-04-18 17:45:47 +02:00
94f995ee37
Fix signed $shift/$shiftx handling in write_smt2
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-03-09 13:19:41 -08:00
5dfc7becca
Use SVA label in smt export if available
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-03-07 11:31:46 -08:00
f570aa5e1d
Fix smt2 code generation for partially initialized memowy words, fixes #831
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2019-02-28 12:15:58 -08:00
b6781c6f4b
Add support for signed $shift/$shiftx in smt2 back-end
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-11-01 11:40:58 +01:00
3aa4484a3c
Consistent use of 'override' for virtual methods in derived classes.
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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
25a864fc73
Fixed -stbv handling in SMT2 back-end
2018-04-04 17:28:07 +02:00
77bd645c35
Add $mem support to SMT2 clock tagging
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-03-27 02:11:20 +02:00
8b7602e660
Improve SMT2 encoding of $reduce_{and,or,bool}
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-03-04 21:22:20 +01:00
b13e6bd375
Add smtbmc support for exist-forall problems
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-02-23 19:33:30 +01:00
17583b6a21
Add support for mockup clock signals in yosys-smtbmc vcd output
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-02-20 17:45:22 +01:00
c9672e2e2e
Fix handling of zero-length cell connections in SMT2 back-end
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Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-02-08 19:12:12 +01:00
9419de3e37
Add yosys-smtbmc VCD writer support for memories with async writes
2017-12-14 03:06:00 +01:00
2625da6440
Add smt2 back-end support for async write memories
2017-12-14 02:07:10 +01:00
455c1c9d97
Fix SMT2 handling of initstate in sub-modules
2017-10-29 13:21:20 +01:00
c2d737457a
Fix bug in write_smt2 (export logic driving hierarchical cells before exporting regs)
2017-08-25 11:44:48 +02:00
8f8baccfde
Fix generation of vlogtb output in yosys-smtbmc for "rand reg" and "rand const reg"
2017-06-07 12:30:24 +02:00
Jannis Harder
Jacob Lifshay
N. Engelhardt
Marcelina Kościelnicka
Claire Xenia Wolf
N. Engelhardt
whitequark
Noah Moroze
Alberto Gonzalez
Xiretza
Eddie Hung
Teguh Hofstee
Clifford Wolf
Henner Zeller