yosys.git
4 years agoAdd xor-assignment test
Kamil Rakoczy [Wed, 24 Jun 2020 12:38:03 +0000 (14:38 +0200)]
Add xor-assignment test

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
4 years agoSupport missing xor-assign operator
Lukasz Dalek [Tue, 23 Jun 2020 16:50:50 +0000 (18:50 +0200)]
Support missing xor-assign operator

Signed-off-by: Lukasz Dalek <ldalek@antmicro.com>
4 years agoAdd or-assignment and plus-assignment tests
Kamil Rakoczy [Wed, 24 Jun 2020 09:45:38 +0000 (11:45 +0200)]
Add or-assignment and plus-assignment tests

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
4 years agoAdd plus-assignment operator
Kamil Rakoczy [Wed, 3 Jun 2020 14:44:02 +0000 (16:44 +0200)]
Add plus-assignment operator

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
4 years agoAdd or-assignment operator
Kamil Rakoczy [Wed, 3 Jun 2020 11:51:57 +0000 (13:51 +0200)]
Add or-assignment operator

Signed-off-by: Kamil Rakoczy <krakoczy@antmicro.com>
4 years agoMerge pull request #2185 from YosysHQ/mwk/cxxrtl-ff-types
whitequark [Wed, 24 Jun 2020 05:40:01 +0000 (05:40 +0000)]
Merge pull request #2185 from YosysHQ/mwk/cxxrtl-ff-types

cxxrtl: Add support for the new FF types.

4 years agocxxrtl: Add support for the new FF types.
Marcelina Kościelnicka [Wed, 24 Jun 2020 00:15:08 +0000 (02:15 +0200)]
cxxrtl: Add support for the new FF types.

4 years agosimplemap: Fix $dffsre mapping.
Marcelina Kościelnicka [Tue, 23 Jun 2020 21:16:43 +0000 (23:16 +0200)]
simplemap: Fix $dffsre mapping.

4 years agoMerge pull request #1818 from YosysHQ/mwk/new-ff-types
clairexen [Tue, 23 Jun 2020 18:25:52 +0000 (20:25 +0200)]
Merge pull request #1818 from YosysHQ/mwk/new-ff-types

Add new FF types to library.

4 years agoUpdate dff2dffe, dff2dffs, zinit to new FF types.
Marcelina Kościelnicka [Tue, 23 Jun 2020 15:25:46 +0000 (17:25 +0200)]
Update dff2dffe, dff2dffs, zinit to new FF types.

4 years agoAdd add* functions for the new FF types
Marcelina Kościelnicka [Tue, 23 Jun 2020 13:39:25 +0000 (15:39 +0200)]
Add add* functions for the new FF types

4 years agoAdd new FF types to simplemap.
Marcelina Kościelnicka [Thu, 9 Apr 2020 01:55:56 +0000 (03:55 +0200)]
Add new FF types to simplemap.

4 years agoAdd support for new FF types in some opt passes.
Marcelina Kościelnicka [Wed, 8 Apr 2020 22:26:17 +0000 (00:26 +0200)]
Add support for new FF types in some opt passes.

4 years agoAdd new builtin FF types
Marcelina Kościelnicka [Wed, 8 Apr 2020 19:42:50 +0000 (21:42 +0200)]
Add new builtin FF types

The new types include:

- FFs with async reset and enable (`$adffe`, `$_DFFE_[NP][NP][01][NP]_`)
- FFs with sync reset (`$sdff`, `$_SDFF_[NP][NP][01]_`)
- FFs with sync reset and enable, reset priority (`$sdffs`, `$_SDFFE_[NP][NP][01][NP]_`)
- FFs with sync reset and enable, enable priority (`$sdffce`, `$_SDFFCE_[NP][NP][01][NP]_`)
- FFs with async reset, set, and enable (`$dffsre`, `$_DFFSRE_[NP][NP][NP][NP]_`)
- latches with reset or set (`$adlatch`, `$_DLATCH_[NP][NP][01]_`)

The new FF types are not actually used anywhere yet (this is left
for future commits).

4 years agoMerge pull request #2182 from whitequark/update-abc
whitequark [Mon, 22 Jun 2020 17:01:59 +0000 (17:01 +0000)]
Merge pull request #2182 from whitequark/update-abc

Update ABC

4 years agoUpdate ABC.
whitequark [Mon, 22 Jun 2020 14:18:07 +0000 (14:18 +0000)]
Update ABC.

4 years agoMerge pull request #2181 from whitequark/minisat-wasm-signal
whitequark [Mon, 22 Jun 2020 00:10:25 +0000 (00:10 +0000)]
Merge pull request #2181 from whitequark/minisat-wasm-signal

minisat: add missing include guard for WASI

4 years agominisat: add missing include guard for WASI.
whitequark [Sun, 21 Jun 2020 21:26:21 +0000 (21:26 +0000)]
minisat: add missing include guard for WASI.

Including signal.h used to be allowed in WASI by mistake, but it's
an error since SDK 11.

4 years agoMerge pull request #2180 from Xiretza/pyosys-override
whitequark [Sun, 21 Jun 2020 15:19:23 +0000 (15:19 +0000)]
Merge pull request #2180 from Xiretza/pyosys-override

pyosys: Use C++11 override keyword for bindings

4 years agopyosys: Use C++11 override keyword for bindings
Xiretza [Sun, 21 Jun 2020 14:27:33 +0000 (16:27 +0200)]
pyosys: Use C++11 override keyword for bindings

7191dd16 dropped the YS_OVERRIDE macro, but it was still being generated
by the python bindings generator, resulting in errors like these when
compiled with ENABLE_PYOSYS=1:

kernel/python_wrappers.cc:350:21: error: expected ‘;’ at end of member declaration
  350 |   virtual void help() YS_OVERRIDE;
      |                     ^
      |                      ;
kernel/python_wrappers.cc:350:23: error: ‘YS_OVERRIDE’ does not name a type
  350 |   virtual void help() YS_OVERRIDE;
      |                       ^~~~~~~~~~~

4 years agoMerge pull request #2177 from boqwxp/dict-iterator-jump
whitequark [Sun, 21 Jun 2020 02:05:12 +0000 (02:05 +0000)]
Merge pull request #2177 from boqwxp/dict-iterator-jump

hashlib, rtlil: Add `operator+()` and `operator+=()` to `dict` iterators

4 years agodict: Remove guard for past-the-end iterators that might mask problems in static...
Alberto Gonzalez [Fri, 19 Jun 2020 20:57:27 +0000 (20:57 +0000)]
dict: Remove guard for past-the-end iterators that might mask problems in static analysis.

Co-Authored-By: whitequark <whitequark@whitequark.org>
4 years agoMerge pull request #2178 from boqwxp/design-select
whitequark [Fri, 19 Jun 2020 19:57:25 +0000 (19:57 +0000)]
Merge pull request #2178 from boqwxp/design-select

rtlil: Add `Design::select()` for selecting whole modules

4 years agortlil: Add `Design::select()` for selecting whole modules.
Alberto Gonzalez [Wed, 17 Jun 2020 20:28:56 +0000 (20:28 +0000)]
rtlil: Add `Design::select()` for selecting whole modules.

4 years agohashlib, rtlil: Add `operator+=()` to `dict<>::iterator` and `dict<>::const_iterator...
Alberto Gonzalez [Wed, 17 Jun 2020 22:32:34 +0000 (22:32 +0000)]
hashlib, rtlil: Add `operator+=()` to `dict<>::iterator` and `dict<>::const_iterator` and add `operator+()` and `operator+=()` to `ObjIterator`.

4 years agoMerge pull request #2175 from Xiretza/missing-noreturn
whitequark [Fri, 19 Jun 2020 15:46:54 +0000 (15:46 +0000)]
Merge pull request #2175 from Xiretza/missing-noreturn

Add missing [[noreturn]] to log_file_error()

4 years agoAdd missing [[noreturn]] to log_file_error()
Xiretza [Fri, 19 Jun 2020 09:46:06 +0000 (11:46 +0200)]
Add missing [[noreturn]] to log_file_error()

Previously this was tagged only with YS_ATTRIBUTE(noreturn), but not
YS_NORETURN, so it got lost in #2173, resulting in warnings in
frontends/ast/simplify.cc:

frontends/ast/simplify.cc:267:1: warning: function declared 'noreturn' should not return [-Winvalid-noreturn]
}
^
frontends/ast/simplify.cc:379:1: warning: function declared 'noreturn' should not return [-Winvalid-noreturn]
}
^

4 years agoMerge pull request #2173 from whitequark/use-cxx11-final-override
whitequark [Fri, 19 Jun 2020 06:15:33 +0000 (06:15 +0000)]
Merge pull request #2173 from whitequark/use-cxx11-final-override

Use C++11 final/override/[[noreturn]]

4 years agoMerge pull request #2174 from whitequark/fix-github-linguist
whitequark [Fri, 19 Jun 2020 06:09:42 +0000 (06:09 +0000)]
Merge pull request #2174 from whitequark/fix-github-linguist

Fix GitHub misidentifying *.v files as Coq

4 years agoFix GitHub misidentifying *.v files as Coq.
whitequark [Fri, 19 Jun 2020 06:08:18 +0000 (06:08 +0000)]
Fix GitHub misidentifying *.v files as Coq.

4 years agoMerge pull request #2171 from whitequark/cxxrtl-accessors
whitequark [Fri, 19 Jun 2020 03:52:29 +0000 (03:52 +0000)]
Merge pull request #2171 from whitequark/cxxrtl-accessors

cxxrtl: add .get() and .set() accessors on value<> and wire<>

4 years agocxxrtl: add .get() and .set() accessors on value<> and wire<>.
whitequark [Thu, 18 Jun 2020 21:51:30 +0000 (21:51 +0000)]
cxxrtl: add .get() and .set() accessors on value<> and wire<>.

For several reasons:
  * They're more convenient than accessing .data.
  * They accommodate variably-sized types like size_t transparently.
  * They statically ensure that no out of range conversions happen.

For now these are only provided for unsigned integers, but eventually
they should be provided for signed integers too. (Annoyingly this
affects conversions to/from `char` at the moment.)

Fixes #2127.

4 years agoMerge pull request #2170 from boqwxp/cutpoint-efficiency
whitequark [Fri, 19 Jun 2020 01:13:19 +0000 (01:13 +0000)]
Merge pull request #2170 from boqwxp/cutpoint-efficiency

cutpoint: Improve efficiency by iterating over module ports instead of module wires

4 years agoUse C++11 [[noreturn]] attribute.
whitequark [Fri, 19 Jun 2020 01:05:59 +0000 (01:05 +0000)]
Use C++11 [[noreturn]] attribute.

4 years agoUse C++11 final/override keywords.
whitequark [Thu, 18 Jun 2020 23:34:52 +0000 (23:34 +0000)]
Use C++11 final/override keywords.

4 years agocutpoint: Improve efficiency by iterating over module ports instead of module wires.
Alberto Gonzalez [Thu, 18 Jun 2020 17:42:36 +0000 (17:42 +0000)]
cutpoint: Improve efficiency by iterating over module ports instead of module wires.

4 years agoMerge pull request #2153 from boqwxp/splitnets-cleanup
N. Engelhardt [Thu, 18 Jun 2020 17:16:55 +0000 (19:16 +0200)]
Merge pull request #2153 from boqwxp/splitnets-cleanup

splitnets: Cleanup and efficiency improvements

4 years agoMerge pull request #2167 from whitequark/cxxrtl-fix-ndebug
whitequark [Thu, 18 Jun 2020 16:57:51 +0000 (16:57 +0000)]
Merge pull request #2167 from whitequark/cxxrtl-fix-ndebug

cxxrtl: don't compute vital values in log_assert()

4 years agoMerge pull request #2142 from whitequark/splitnets-hdlname
whitequark [Thu, 18 Jun 2020 16:57:24 +0000 (16:57 +0000)]
Merge pull request #2142 from whitequark/splitnets-hdlname

splitnets: propagate (*hdlname*) and disambiguate via start_offset

4 years agoMerge pull request #2164 from madebr/msvc
Miodrag Milanović [Thu, 18 Jun 2020 10:44:21 +0000 (12:44 +0200)]
Merge pull request #2164 from madebr/msvc

Get yosys building on Visual Studio

4 years agocxxrtl: don't compute vital values in log_assert().
whitequark [Wed, 17 Jun 2020 19:27:47 +0000 (19:27 +0000)]
cxxrtl: don't compute vital values in log_assert().

This breaks NDEBUG builds.

Fixes #2166.

4 years agomsvc does not support designated initializers in structs
Anonymous Maarten [Wed, 17 Jun 2020 11:53:57 +0000 (13:53 +0200)]
msvc does not support designated initializers in structs

4 years agoMSVC does not understand __builtin_unreachable
Anonymous Maarten [Wed, 17 Jun 2020 11:52:45 +0000 (13:52 +0200)]
MSVC does not understand __builtin_unreachable

4 years agoMSVC cannot omit operand in conditional
Anonymous Maarten [Wed, 17 Jun 2020 11:51:02 +0000 (13:51 +0200)]
MSVC cannot omit operand in conditional

4 years agoMSVC defines TRANSPARENT too
Anonymous Maarten [Wed, 17 Jun 2020 13:08:55 +0000 (15:08 +0200)]
MSVC defines TRANSPARENT too

4 years agoMerge pull request #2163 from jfng/cxxrtl-blackbox-debuginfo
whitequark [Wed, 17 Jun 2020 06:07:41 +0000 (06:07 +0000)]
Merge pull request #2163 from jfng/cxxrtl-blackbox-debuginfo

cxxrtl: restrict the debug info of a blackbox to its ports.

4 years agoMerge pull request #2160 from whitequark/cxxrtl-fix-warning
whitequark [Wed, 17 Jun 2020 06:06:58 +0000 (06:06 +0000)]
Merge pull request #2160 from whitequark/cxxrtl-fix-warning

cxxrtl: avoid unused variable warning for transparent $memrd ports

4 years agocxxrtl: restrict the debug info of a blackbox to its ports.
Jean-François Nguyen [Tue, 16 Jun 2020 13:28:35 +0000 (15:28 +0200)]
cxxrtl: restrict the debug info of a blackbox to its ports.

4 years agoMerge pull request #2156 from XarkLabs/master
N. Engelhardt [Tue, 16 Jun 2020 10:31:34 +0000 (12:31 +0200)]
Merge pull request #2156 from XarkLabs/master

Fix Verilator sim warnings: 1 BLKSEQ and 3 WIDTH

4 years agoMerge pull request #2159 from MerryMage/cxxrtl-mul
whitequark [Mon, 15 Jun 2020 06:08:17 +0000 (06:08 +0000)]
Merge pull request #2159 from MerryMage/cxxrtl-mul

cxxrtl: Implement chunk-wise multiplication

4 years agocxxrtl: avoid unused variable warning for transparent $memrd ports. NFC.
whitequark [Sun, 14 Jun 2020 05:42:52 +0000 (05:42 +0000)]
cxxrtl: avoid unused variable warning for transparent $memrd ports. NFC.

4 years agocxxrtl: Implement chunk-wise multiplication
MerryMage [Sun, 14 Jun 2020 14:52:43 +0000 (15:52 +0100)]
cxxrtl: Implement chunk-wise multiplication

4 years agoMerge pull request #2158 from miek/sshr-sign-extension
whitequark [Mon, 15 Jun 2020 01:37:05 +0000 (01:37 +0000)]
Merge pull request #2158 from miek/sshr-sign-extension

cxxrtl: fix sshr sign-extension.

4 years agocxxrtl: fix sshr sign-extension.
Mike Walters [Sun, 14 Jun 2020 13:42:20 +0000 (14:42 +0100)]
cxxrtl: fix sshr sign-extension.

4 years agoFix Verilator sim warnings: 1 BLKSEQ and 3 WIDTH
Xark [Sun, 14 Jun 2020 07:45:22 +0000 (00:45 -0700)]
Fix Verilator sim warnings: 1 BLKSEQ and 3 WIDTH

4 years agoMerge pull request #2155 from whitequark/fix-wasm-wasi-sdk-11
whitequark [Sat, 13 Jun 2020 23:28:18 +0000 (23:28 +0000)]
Merge pull request #2155 from whitequark/fix-wasm-wasi-sdk-11

kernel: guard include of signal.h more precisely

4 years agokernel: guard include of signal.h more precisely.
whitequark [Sat, 13 Jun 2020 22:37:04 +0000 (22:37 +0000)]
kernel: guard include of signal.h more precisely.

Upgrading to WASI SDK 11.0 caused the WASM build to fail because WASM
does not have signals. (Arguably Yosys was broken even before, it was
just broken silently.)

4 years agoMerge pull request #2151 from whitequark/cxxrtl-fix-rzext
whitequark [Sat, 13 Jun 2020 22:18:35 +0000 (22:18 +0000)]
Merge pull request #2151 from whitequark/cxxrtl-fix-rzext

cxxrtl: fix rzext()

4 years agosplitnets: Clean up pseudo-private member usage
Alberto Gonzalez [Sat, 13 Jun 2020 05:47:55 +0000 (05:47 +0000)]
splitnets: Clean up pseudo-private member usage

4 years agosplitnets: Slightly improve efficiency by avoiding some unnecessary lookups
Alberto Gonzalez [Sat, 13 Jun 2020 05:26:30 +0000 (05:26 +0000)]
splitnets: Slightly improve efficiency by avoiding some unnecessary lookups

4 years agoMerge pull request #2145 from whitequark/cxxrtl-splitnets
whitequark [Sat, 13 Jun 2020 04:23:22 +0000 (04:23 +0000)]
Merge pull request #2145 from whitequark/cxxrtl-splitnets

cxxrtl: handle multipart signals

4 years agoMerge pull request #2152 from whitequark/cxxrtl-always-inline
whitequark [Sat, 13 Jun 2020 04:17:49 +0000 (04:17 +0000)]
Merge pull request #2152 from whitequark/cxxrtl-always-inline

cxxrtl: always inline internal cells and slice/concat operations

4 years agocxxrtl: always inline internal cells and slice/concat operations.
whitequark [Sat, 13 Jun 2020 01:50:53 +0000 (01:50 +0000)]
cxxrtl: always inline internal cells and slice/concat operations.

This can result in massive reduction in runtime, up to 50% depending
on workload. Currently people are using `-mllvm -inline-threshold=`
as a workaround (with clang++), but this solution is more portable.

4 years agocxxrtl: fix rzext().
whitequark [Sat, 13 Jun 2020 00:49:44 +0000 (00:49 +0000)]
cxxrtl: fix rzext().

This was a correctness issue, but one of the consequences is that it
resulted in jumps in generated machine code where there should have
been none. As a side effect of fixing the bug, Minerva SoC became 10%
faster.

4 years agoMerge pull request #2150 from whitequark/cxxrtl-elide-pmux
whitequark [Fri, 12 Jun 2020 08:50:57 +0000 (08:50 +0000)]
Merge pull request #2150 from whitequark/cxxrtl-elide-pmux

cxxrtl: elide $pmux cells

4 years agocxxrtl: elide $pmux cells.
whitequark [Fri, 12 Jun 2020 02:40:30 +0000 (02:40 +0000)]
cxxrtl: elide $pmux cells.

On Minerva, this improves runtime by around 10%, mostly by ensuring
that the logic driving FFs is packed into edge conditionals.

4 years agoMerge pull request #2149 from whitequark/cxxrtl-unbuffer-outputs
whitequark [Fri, 12 Jun 2020 01:59:35 +0000 (01:59 +0000)]
Merge pull request #2149 from whitequark/cxxrtl-unbuffer-outputs

cxxrtl: unbuffer output wires of toplevel module

4 years agocxxrtl: annotate port direction as comments.
whitequark [Fri, 12 Jun 2020 00:35:18 +0000 (00:35 +0000)]
cxxrtl: annotate port direction as comments.

4 years agocxxrtl: unbuffer output wires of toplevel module.
whitequark [Fri, 12 Jun 2020 00:05:05 +0000 (00:05 +0000)]
cxxrtl: unbuffer output wires of toplevel module.

Without unbuffering output wires of, at least, toplevel modules, it
is not possible to have most designs that rely on IO via toplevel
ports (as opposed to using exclusively blackboxes) converge within
one delta cycle. That seriously impairs the performance of CXXRTL.

This commit avoids unbuffering outputs of all modules solely so that
in future, CXXRTL could gain fully separate compilation, and not for
any present technical reason.

4 years agocxxrtl: simplify unbuffering of input wires.
whitequark [Thu, 11 Jun 2020 22:21:30 +0000 (22:21 +0000)]
cxxrtl: simplify unbuffering of input wires.

This also fixes an edge case with (*keep*) input ports.

4 years agocxxrtl: handle multipart signals.
whitequark [Thu, 11 Jun 2020 13:31:16 +0000 (13:31 +0000)]
cxxrtl: handle multipart signals.

This avoids losing design visibility when using the `splitnets` pass.

4 years agointel_alm: fix DFFE matching
Dan Ravensloft [Thu, 11 Jun 2020 17:06:39 +0000 (18:06 +0100)]
intel_alm: fix DFFE matching

4 years agocxxrtl: expose RTLIL::{Wire,Memory}->start_offset in debug info.
whitequark [Thu, 11 Jun 2020 12:42:37 +0000 (12:42 +0000)]
cxxrtl: expose RTLIL::{Wire,Memory}->start_offset in debug info.

4 years agosplitnets: propagate (*hdlname*) and disambiguate via start_offset.
whitequark [Wed, 10 Jun 2020 19:59:08 +0000 (19:59 +0000)]
splitnets: propagate (*hdlname*) and disambiguate via start_offset.

This allows reliably coalescing the split wires later.

4 years agoMerge pull request #2141 from whitequark/cxxrtl-cxx11
whitequark [Wed, 10 Jun 2020 17:10:15 +0000 (17:10 +0000)]
Merge pull request #2141 from whitequark/cxxrtl-cxx11

cxxrtl: various compiler compatibility fixes

4 years agoMerge pull request #2140 from whitequark/cxxrtl-aliases
whitequark [Wed, 10 Jun 2020 16:09:27 +0000 (16:09 +0000)]
Merge pull request #2140 from whitequark/cxxrtl-aliases

cxxrtl: disambiguate values/wires and their aliases in debug info

4 years agocxxrtl: restore C++11 compatibility.
whitequark [Wed, 10 Jun 2020 15:49:28 +0000 (15:49 +0000)]
cxxrtl: restore C++11 compatibility.

This is necessary to be able to build CXXRTL models via yosys-config.

4 years agocxxrtl: fix a few gcc warnings.
whitequark [Wed, 10 Jun 2020 15:57:01 +0000 (15:57 +0000)]
cxxrtl: fix a few gcc warnings.

4 years agoFix formatting. NFC.
whitequark [Wed, 10 Jun 2020 15:48:40 +0000 (15:48 +0000)]
Fix formatting. NFC.

4 years agocxxrtl: disambiguate values/wires and their aliases in debug info.
whitequark [Wed, 10 Jun 2020 14:39:45 +0000 (14:39 +0000)]
cxxrtl: disambiguate values/wires and their aliases in debug info.

With this change, it is easier to see which signals carry state (only
wire<>s appear as `reg` in VCD files) and to construct a minimal
checkpoint (CXXRTL_WIRE debug items represent the canonical smallest
set of state required to fully reconstruct the simulation).

4 years agoMerge pull request #2134 from whitequark/cxxrtl-opt-debug
whitequark [Wed, 10 Jun 2020 11:51:04 +0000 (11:51 +0000)]
Merge pull request #2134 from whitequark/cxxrtl-opt-debug

cxxrtl: introduce -Og optimization level

4 years agoMerge pull request #2131 from YosysHQ/claire/preserveffs
clairexen [Wed, 10 Jun 2020 10:44:23 +0000 (12:44 +0200)]
Merge pull request #2131 from YosysHQ/claire/preserveffs

Do not optimize away FFs in "prep" and Verific front-end

4 years agoMerge pull request #2139 from YosysHQ/verific_missing_memory
clairexen [Wed, 10 Jun 2020 10:42:43 +0000 (12:42 +0200)]
Merge pull request #2139 from YosysHQ/verific_missing_memory

verific - detect missing memory to prevent crash.

4 years agoverific - detect missing memory to prevent crash.
Miodrag Milanovic [Wed, 10 Jun 2020 09:27:44 +0000 (11:27 +0200)]
verific - detect missing memory to prevent crash.

4 years agocxxrtl: allow unbuffering without localizing.
whitequark [Tue, 9 Jun 2020 21:50:09 +0000 (21:50 +0000)]
cxxrtl: allow unbuffering without localizing.

Although logically two separate steps, these were treated as one for
historic reasons. Splitting the two makes it possible to have designs
that are only 2× slower than fastest possible (and are without extra
delta cycles) that allow probing all public wires.

4 years agocxxrtl: order -On levels as localize, elide instead of the reverse.
whitequark [Tue, 9 Jun 2020 20:55:40 +0000 (20:55 +0000)]
cxxrtl: order -On levels as localize, elide instead of the reverse.

Historically, elision was implemented before localization, so levels
with elision are lower than corresponding levels with localization.
This is unfortunate for two reasons:
  1. Elision is a logical subset of localization, since it equals to
     not giving a name to a temporary.
  2. "Localize" currently actually means "unbuffer and localize",
     and it would be useful to split those steps (at least for
     public wires) for improved design visibility.

4 years agoFix tests/opt/opt_rmdff
Claire Wolf [Tue, 9 Jun 2020 17:14:36 +0000 (19:14 +0200)]
Fix tests/opt/opt_rmdff

This only passed before because "prep" was also running opt_rmdff

Signed-off-by: Claire Wolf <claire@symbioticeda.com>
4 years agoDrive-by modernization in sat.cc
Claire Wolf [Tue, 9 Jun 2020 19:49:43 +0000 (21:49 +0200)]
Drive-by modernization in sat.cc

Signed-off-by: Claire Wolf <claire@symbioticeda.com>
4 years agocxxrtl: factor out -noproc/-noflatten from -O.
whitequark [Tue, 9 Jun 2020 20:18:07 +0000 (20:18 +0000)]
cxxrtl: factor out -noproc/-noflatten from -O.

Although these options can be thought of as optimizations, they are
essentially orthogonal to the core of -O, which is managing signal
buffering and scope. Going from -O4 to -O2 means going from limited
to complete design visibility, yet in both cases proc and flatten
are desirable.

4 years agoMerge pull request #2112 from YosysHQ/claire/fix2040
clairexen [Tue, 9 Jun 2020 16:27:59 +0000 (18:27 +0200)]
Merge pull request #2112 from YosysHQ/claire/fix2040

Add latch detection for use_case_method in part-select write

4 years agoDo not optimize away FFs in "prep" and Verific fron-end
Claire Wolf [Tue, 9 Jun 2020 13:54:14 +0000 (15:54 +0200)]
Do not optimize away FFs in "prep" and Verific fron-end

Signed-off-by: Claire Wolf <claire@symbioticeda.com>
4 years agoMerge pull request #2128 from whitequark/flatten-processes
whitequark [Tue, 9 Jun 2020 12:41:02 +0000 (12:41 +0000)]
Merge pull request #2128 from whitequark/flatten-processes

flatten: accept processes

4 years agoMerge pull request #2130 from whitequark/cxxrtl-fix-split_by
whitequark [Tue, 9 Jun 2020 11:59:17 +0000 (11:59 +0000)]
Merge pull request #2130 from whitequark/cxxrtl-fix-split_by

cxxrtl: fix two buggy split_by functions

4 years agocxxrtl: fix two buggy split_by functions.
whitequark [Tue, 9 Jun 2020 11:05:35 +0000 (11:05 +0000)]
cxxrtl: fix two buggy split_by functions.

4 years agoflatten: accept processes.
whitequark [Tue, 9 Jun 2020 09:56:23 +0000 (09:56 +0000)]
flatten: accept processes.

4 years agoRTLIL: add Module::addProcess, use it in Module::cloneInto. NFC.
whitequark [Tue, 9 Jun 2020 09:55:48 +0000 (09:55 +0000)]
RTLIL: add Module::addProcess, use it in Module::cloneInto. NFC.

4 years agoMerge pull request #2126 from whitequark/cxxrtl-non-ext-logic-ops
whitequark [Tue, 9 Jun 2020 09:54:09 +0000 (09:54 +0000)]
Merge pull request #2126 from whitequark/cxxrtl-non-ext-logic-ops

cxxrtl: ignore cell input signedness when it is irrelevant

4 years agoMerge pull request #2125 from whitequark/cxxrtl-fix-namespace
whitequark [Tue, 9 Jun 2020 07:52:27 +0000 (07:52 +0000)]
Merge pull request #2125 from whitequark/cxxrtl-fix-namespace

cxxrtl: add missing namespace

4 years agocxxrtl: ignore cell input signedness when it is irrelevant.
whitequark [Tue, 9 Jun 2020 07:26:13 +0000 (07:26 +0000)]
cxxrtl: ignore cell input signedness when it is irrelevant.

Before this commit, Verilog expressions like `x && 1` would result in
references to `logic_and_us` in generated CXXRTL code, which would
not compile. After this commit, since cells like that actually behave
the same regardless of signedness attributes, the signedness is
ignored, which also reduces the template instantiation pressure.

4 years agocxxrtl: add missing namespace.
whitequark [Tue, 9 Jun 2020 06:26:17 +0000 (06:26 +0000)]
cxxrtl: add missing namespace.

Fixes #2124.